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Current Path: /opt/golang/1.19.4/src/runtime

📁 ..
📄 HACKING.md(15.29 KB)
📄 Makefile(178 B)
📄 abi_test.go(2.83 KB)
📄 alg.go(9.45 KB)
📄 align_runtime_test.go(2.73 KB)
📄 align_test.go(5.26 KB)
📁 asan
📄 asan.go(1.55 KB)
📄 asan0.go(761 B)
📄 asan_amd64.s(2.46 KB)
📄 asan_arm64.s(2.15 KB)
📄 asan_riscv64.s(1.92 KB)
📄 asm.s(278 B)
📄 asm_386.s(40.43 KB)
📄 asm_amd64.h(411 B)
📄 asm_amd64.s(57.44 KB)
📄 asm_arm.s(30.2 KB)
📄 asm_arm64.s(41.41 KB)
📄 asm_loong64.s(21.79 KB)
📄 asm_mips64x.s(22.43 KB)
📄 asm_mipsx.s(24.41 KB)
📄 asm_ppc64x.h(1023 B)
📄 asm_ppc64x.s(35.21 KB)
📄 asm_riscv64.s(26.43 KB)
📄 asm_s390x.s(26.08 KB)
📄 asm_wasm.s(9.38 KB)
📄 atomic_arm64.s(259 B)
📄 atomic_loong64.s(245 B)
📄 atomic_mips64x.s(300 B)
📄 atomic_mipsx.s(262 B)
📄 atomic_pointer.go(2.62 KB)
📄 atomic_ppc64x.s(437 B)
📄 atomic_riscv64.s(275 B)
📄 auxv_none.go(298 B)
📄 callers_test.go(8.44 KB)
📁 cgo
📄 cgo.go(2 KB)
📄 cgo_mmap.go(2.4 KB)
📄 cgo_ppc64x.go(418 B)
📄 cgo_sigaction.go(3.28 KB)
📄 cgocall.go(19.12 KB)
📄 cgocallback.go(317 B)
📄 cgocheck.go(6.86 KB)
📄 chan.go(23.73 KB)
📄 chan_test.go(23.37 KB)
📄 chanbarrier_test.go(1.4 KB)
📄 checkptr.go(3.29 KB)
📄 checkptr_test.go(2.73 KB)
📄 closure_test.go(937 B)
📄 compiler.go(410 B)
📄 complex.go(1.59 KB)
📄 complex_test.go(1.05 KB)
📄 conv_wasm_test.go(2.96 KB)
📄 cpuflags.go(810 B)
📄 cpuflags_amd64.go(533 B)
📄 cpuflags_arm64.go(334 B)
📄 cpuprof.go(7.78 KB)
📄 cputicks.go(449 B)
📄 crash_cgo_test.go(18.14 KB)
📄 crash_test.go(21.77 KB)
📄 crash_unix_test.go(8.39 KB)
📁 debug
📄 debug.go(3.23 KB)
📄 debug_test.go(7.98 KB)
📄 debugcall.go(6.19 KB)
📄 debuglog.go(17.87 KB)
📄 debuglog_off.go(357 B)
📄 debuglog_on.go(1.09 KB)
📄 debuglog_test.go(4.56 KB)
📄 defer_test.go(11.56 KB)
📄 defs1_linux.go(845 B)
📄 defs1_netbsd_386.go(2.83 KB)
📄 defs1_netbsd_amd64.go(3.06 KB)
📄 defs1_netbsd_arm.go(2.94 KB)
📄 defs1_netbsd_arm64.go(3.17 KB)
📄 defs1_solaris_amd64.go(4 KB)
📄 defs2_linux.go(3.51 KB)
📄 defs3_linux.go(1.09 KB)
📄 defs_aix.go(4.16 KB)
📄 defs_aix_ppc64.go(3.61 KB)
📄 defs_arm_linux.go(2.67 KB)
📄 defs_darwin.go(3.78 KB)
📄 defs_darwin_amd64.go(6.07 KB)
📄 defs_darwin_arm64.go(3.89 KB)
📄 defs_dragonfly.go(2.59 KB)
📄 defs_dragonfly_amd64.go(3.29 KB)
📄 defs_freebsd.go(3.82 KB)
📄 defs_freebsd_386.go(4.36 KB)
📄 defs_freebsd_amd64.go(4.63 KB)
📄 defs_freebsd_arm.go(3.69 KB)
📄 defs_freebsd_arm64.go(4.01 KB)
📄 defs_illumos_amd64.go(285 B)
📄 defs_linux.go(3.25 KB)
📄 defs_linux_386.go(4.42 KB)
📄 defs_linux_amd64.go(4.93 KB)
📄 defs_linux_arm.go(4.11 KB)
📄 defs_linux_arm64.go(3.86 KB)
📄 defs_linux_loong64.go(3.68 KB)
📄 defs_linux_mips64x.go(3.85 KB)
📄 defs_linux_mipsx.go(3.83 KB)
📄 defs_linux_ppc64.go(3.93 KB)
📄 defs_linux_ppc64le.go(3.93 KB)
📄 defs_linux_riscv64.go(4.06 KB)
📄 defs_linux_s390x.go(3.41 KB)
📄 defs_netbsd.go(2.72 KB)
📄 defs_netbsd_386.go(855 B)
📄 defs_netbsd_amd64.go(1.01 KB)
📄 defs_netbsd_arm.go(764 B)
📄 defs_openbsd.go(3.09 KB)
📄 defs_openbsd_386.go(2.87 KB)
📄 defs_openbsd_amd64.go(3.07 KB)
📄 defs_openbsd_arm.go(2.99 KB)
📄 defs_openbsd_arm64.go(2.74 KB)
📄 defs_openbsd_mips64.go(2.64 KB)
📄 defs_plan9_386.go(1.63 KB)
📄 defs_plan9_amd64.go(1.82 KB)
📄 defs_plan9_arm.go(1.73 KB)
📄 defs_solaris.go(3.31 KB)
📄 defs_solaris_amd64.go(1004 B)
📄 defs_windows.go(2.09 KB)
📄 defs_windows_386.go(1.98 KB)
📄 defs_windows_amd64.go(2.71 KB)
📄 defs_windows_arm.go(2.11 KB)
📄 defs_windows_arm64.go(2.63 KB)
📄 duff_386.s(8.24 KB)
📄 duff_amd64.s(5.62 KB)
📄 duff_arm.s(7.11 KB)
📄 duff_arm64.s(5.27 KB)
📄 duff_loong64.s(12 KB)
📄 duff_mips64x.s(11.28 KB)
📄 duff_ppc64x.s(7.06 KB)
📄 duff_riscv64.s(11.4 KB)
📄 duff_s390x.s(507 B)
📄 env_plan9.go(3 KB)
📄 env_posix.go(1.79 KB)
📄 env_test.go(1.16 KB)
📄 error.go(9.21 KB)
📄 example_test.go(1.55 KB)
📄 export_aix_test.go(234 B)
📄 export_arm_test.go(226 B)
📄 export_darwin_test.go(382 B)
📄 export_debug_amd64_test.go(3.6 KB)
📄 export_debug_arm64_test.go(3.49 KB)
📄 export_debug_test.go(5.05 KB)
📄 export_debuglog_test.go(1.24 KB)
📄 export_linux_test.go(550 B)
📄 export_mmap_test.go(429 B)
📄 export_pipe2_test.go(310 B)
📄 export_pipe_test.go(219 B)
📄 export_solaris_test.go(282 B)
📄 export_test.go(38.87 KB)
📄 export_unix_test.go(2.18 KB)
📄 export_windows_test.go(677 B)
📄 extern.go(13.62 KB)
📄 fastlog2.go(1.22 KB)
📄 fastlog2_test.go(784 B)
📄 fastlog2table.go(904 B)
📄 float.go(1.35 KB)
📄 float_test.go(699 B)
📄 funcdata.h(2.55 KB)
📄 gc_test.go(20.04 KB)
📄 gcinfo_test.go(5.59 KB)
📄 go_tls.h(366 B)
📄 hash32.go(1.58 KB)
📄 hash64.go(1.95 KB)
📄 hash_test.go(16.77 KB)
📄 heapdump.go(17.65 KB)
📄 histogram.go(6.19 KB)
📄 histogram_test.go(3.42 KB)
📄 iface.go(15.66 KB)
📄 iface_test.go(7.45 KB)
📁 internal
📄 lfstack.go(1.77 KB)
📄 lfstack_32bit.go(532 B)
📄 lfstack_64bit.go(2.18 KB)
📄 lfstack_test.go(2.77 KB)
📄 libfuzzer.go(6.5 KB)
📄 libfuzzer_amd64.s(5.01 KB)
📄 libfuzzer_arm64.s(3.15 KB)
📄 lock_futex.go(5.19 KB)
📄 lock_js.go(6.14 KB)
📄 lock_sema.go(6.74 KB)
📄 lockrank.go(13.26 KB)
📄 lockrank_off.go(1.14 KB)
📄 lockrank_on.go(9.83 KB)
📄 lockrank_test.go(1.15 KB)
📄 malloc.go(51.01 KB)
📄 malloc_test.go(10.78 KB)
📄 map.go(43.52 KB)
📄 map_benchmark_test.go(10.48 KB)
📄 map_fast32.go(12.72 KB)
📄 map_fast64.go(12.91 KB)
📄 map_faststr.go(14.3 KB)
📄 map_test.go(27.44 KB)
📄 mbarrier.go(12.43 KB)
📄 mbitmap.go(66.08 KB)
📄 mcache.go(10 KB)
📄 mcentral.go(7.9 KB)
📄 mcheckmark.go(2.81 KB)
📄 mem.go(6.23 KB)
📄 mem_aix.go(1.9 KB)
📄 mem_bsd.go(2.03 KB)
📄 mem_darwin.go(1.84 KB)
📄 mem_js.go(2.25 KB)
📄 mem_linux.go(6.15 KB)
📄 mem_plan9.go(4.32 KB)
📄 mem_windows.go(3.76 KB)
📄 memclr_386.s(2.38 KB)
📄 memclr_amd64.s(4.91 KB)
📄 memclr_arm.s(2.6 KB)
📄 memclr_arm64.s(3.62 KB)
📄 memclr_loong64.s(778 B)
📄 memclr_mips64x.s(1.72 KB)
📄 memclr_mipsx.s(1.32 KB)
📄 memclr_plan9_386.s(983 B)
📄 memclr_plan9_amd64.s(511 B)
📄 memclr_ppc64x.s(4.23 KB)
📄 memclr_riscv64.s(978 B)
📄 memclr_s390x.s(1.96 KB)
📄 memclr_wasm.s(622 B)
📄 memmove_386.s(4.42 KB)
📄 memmove_amd64.s(12.48 KB)
📄 memmove_arm.s(5.9 KB)
📄 memmove_arm64.s(5.96 KB)
📄 memmove_linux_amd64_test.go(1.6 KB)
📄 memmove_loong64.s(1.8 KB)
📄 memmove_mips64x.s(1.83 KB)
📄 memmove_mipsx.s(4.4 KB)
📄 memmove_plan9_386.s(3.06 KB)
📄 memmove_plan9_amd64.s(3.04 KB)
📄 memmove_ppc64x.s(4.58 KB)
📄 memmove_riscv64.s(1.86 KB)
📄 memmove_s390x.s(2.92 KB)
📄 memmove_test.go(14.03 KB)
📄 memmove_wasm.s(1.74 KB)
📁 metrics
📄 metrics.go(18.71 KB)
📄 metrics_test.go(14.74 KB)
📄 mfinal.go(16.34 KB)
📄 mfinal_test.go(6.19 KB)
📄 mfixalloc.go(3.07 KB)
📄 mgc.go(56.37 KB)
📄 mgclimit.go(17.26 KB)
📄 mgclimit_test.go(9.02 KB)
📄 mgcmark.go(47.47 KB)
📄 mgcpacer.go(60.12 KB)
📄 mgcpacer_test.go(40.43 KB)
📄 mgcscavenge.go(41.29 KB)
📄 mgcscavenge_test.go(20.33 KB)
📄 mgcstack.go(10.58 KB)
📄 mgcsweep.go(27.89 KB)
📄 mgcwork.go(12.86 KB)
📄 mheap.go(69.14 KB)
📄 mkduff.go(8.01 KB)
📄 mkfastlog2table.go(3.08 KB)
📄 mkpreempt.go(15.12 KB)
📄 mksizeclasses.go(9.3 KB)
📄 mmap.go(821 B)
📄 mpagealloc.go(36.84 KB)
📄 mpagealloc_32bit.go(3.81 KB)
📄 mpagealloc_64bit.go(9.44 KB)
📄 mpagealloc_test.go(32.59 KB)
📄 mpagecache.go(5.46 KB)
📄 mpagecache_test.go(10.79 KB)
📄 mpallocbits.go(12.6 KB)
📄 mpallocbits_test.go(13.69 KB)
📄 mprof.go(38.51 KB)
📄 mranges.go(13.64 KB)
📄 mranges_test.go(5.68 KB)
📁 msan
📄 msan.go(1.5 KB)
📄 msan0.go(725 B)
📄 msan_amd64.s(2.31 KB)
📄 msan_arm64.s(1.99 KB)
📄 msize.go(777 B)
📄 mspanset.go(12.21 KB)
📄 mstats.go(30.07 KB)
📄 mwbbuf.go(9.28 KB)
📄 nbpipe_fcntl_libc_test.go(470 B)
📄 nbpipe_fcntl_unix_test.go(458 B)
📄 nbpipe_pipe.go(405 B)
📄 nbpipe_pipe2.go(344 B)
📄 nbpipe_pipe_test.go(706 B)
📄 nbpipe_test.go(1.68 KB)
📄 net_plan9.go(645 B)
📄 netpoll.go(18.27 KB)
📄 netpoll_aix.go(4.83 KB)
📄 netpoll_epoll.go(4.16 KB)
📄 netpoll_fake.go(652 B)
📄 netpoll_kqueue.go(4.56 KB)
📄 netpoll_os_test.go(360 B)
📄 netpoll_solaris.go(10.76 KB)
📄 netpoll_stub.go(1.41 KB)
📄 netpoll_windows.go(3.75 KB)
📄 norace_linux_test.go(915 B)
📄 norace_test.go(983 B)
📄 numcpu_freebsd_test.go(381 B)
📄 os2_aix.go(20.45 KB)
📄 os2_freebsd.go(302 B)
📄 os2_openbsd.go(296 B)
📄 os2_plan9.go(1.48 KB)
📄 os2_solaris.go(320 B)
📄 os3_plan9.go(3.93 KB)
📄 os3_solaris.go(17.22 KB)
📄 os_aix.go(8.61 KB)
📄 os_android.go(463 B)
📄 os_darwin.go(12 KB)
📄 os_darwin_arm64.go(416 B)
📄 os_dragonfly.go(6.96 KB)
📄 os_freebsd.go(11.61 KB)
📄 os_freebsd2.go(603 B)
📄 os_freebsd_amd64.go(658 B)
📄 os_freebsd_arm.go(1.32 KB)
📄 os_freebsd_arm64.go(398 B)
📄 os_freebsd_noauxv.go(241 B)
📄 os_illumos.go(3.93 KB)
📄 os_js.go(3.28 KB)
📄 os_linux.go(26.14 KB)
📄 os_linux_arm.go(1.35 KB)
📄 os_linux_arm64.go(556 B)
📄 os_linux_be64.go(824 B)
📄 os_linux_generic.go(888 B)
📄 os_linux_loong64.go(485 B)
📄 os_linux_mips64x.go(1.07 KB)
📄 os_linux_mipsx.go(1.06 KB)
📄 os_linux_noauxv.go(337 B)
📄 os_linux_novdso.go(347 B)
📄 os_linux_ppc64x.go(526 B)
📄 os_linux_riscv64.go(198 B)
📄 os_linux_s390x.go(316 B)
📄 os_linux_x86.go(234 B)
📄 os_netbsd.go(9.8 KB)
📄 os_netbsd_386.go(617 B)
📄 os_netbsd_amd64.go(614 B)
📄 os_netbsd_arm.go(1.16 KB)
📄 os_netbsd_arm64.go(856 B)
📄 os_nonopenbsd.go(437 B)
📄 os_only_solaris.go(357 B)
📄 os_openbsd.go(6.55 KB)
📄 os_openbsd_arm.go(749 B)
📄 os_openbsd_arm64.go(416 B)
📄 os_openbsd_libc.go(1.71 KB)
📄 os_openbsd_mips64.go(416 B)
📄 os_openbsd_syscall.go(1.27 KB)
📄 os_openbsd_syscall1.go(441 B)
📄 os_openbsd_syscall2.go(2.46 KB)
📄 os_plan9.go(10.3 KB)
📄 os_plan9_arm.go(462 B)
📄 os_solaris.go(6.55 KB)
📄 os_windows.go(44.43 KB)
📄 os_windows_arm.go(511 B)
📄 os_windows_arm64.go(339 B)
📄 panic.go(40.25 KB)
📄 panic32.go(4.8 KB)
📄 panic_test.go(1.71 KB)
📄 plugin.go(4.26 KB)
📁 pprof
📄 preempt.go(15.21 KB)
📄 preempt_386.s(824 B)
📄 preempt_amd64.s(1.62 KB)
📄 preempt_arm.s(1.48 KB)
📄 preempt_arm64.s(1.97 KB)
📄 preempt_loong64.s(2.35 KB)
📄 preempt_mips64x.s(2.72 KB)
📄 preempt_mipsx.s(2.68 KB)
📄 preempt_nonwindows.go(290 B)
📄 preempt_ppc64x.s(2.72 KB)
📄 preempt_riscv64.s(2.26 KB)
📄 preempt_s390x.s(1.01 KB)
📄 preempt_wasm.s(176 B)
📄 print.go(5.95 KB)
📄 proc.go(176.84 KB)
📄 proc_runtime_test.go(1.38 KB)
📄 proc_test.go(25.66 KB)
📄 profbuf.go(18.26 KB)
📄 profbuf_test.go(8.65 KB)
📄 proflabel.go(1.52 KB)
📁 race
📄 race.go(18.58 KB)
📄 race0.go(2.79 KB)
📄 race_amd64.s(13.82 KB)
📄 race_arm64.s(14.21 KB)
📄 race_ppc64le.s(17.89 KB)
📄 race_s390x.s(12 KB)
📄 rand_test.go(907 B)
📄 rdebug.go(553 B)
📄 relax_stub.go(598 B)
📄 rt0_aix_ppc64.s(4.33 KB)
📄 rt0_android_386.s(822 B)
📄 rt0_android_amd64.s(754 B)
📄 rt0_android_arm.s(843 B)
📄 rt0_android_arm64.s(941 B)
📄 rt0_darwin_amd64.s(399 B)
📄 rt0_darwin_arm64.s(1.69 KB)
📄 rt0_dragonfly_amd64.s(448 B)
📄 rt0_freebsd_386.s(454 B)
📄 rt0_freebsd_amd64.s(442 B)
📄 rt0_freebsd_arm.s(298 B)
📄 rt0_freebsd_arm64.s(1.88 KB)
📄 rt0_illumos_amd64.s(311 B)
📄 rt0_ios_amd64.s(425 B)
📄 rt0_ios_arm64.s(425 B)
📄 rt0_js_wasm.s(2.3 KB)
📄 rt0_linux_386.s(450 B)
📄 rt0_linux_amd64.s(307 B)
📄 rt0_linux_arm.s(1007 B)
📄 rt0_linux_arm64.s(1.81 KB)
📄 rt0_linux_loong64.s(716 B)
📄 rt0_linux_mips64x.s(1014 B)
📄 rt0_linux_mipsx.s(797 B)
📄 rt0_linux_ppc64.s(928 B)
📄 rt0_linux_ppc64le.s(4.35 KB)
📄 rt0_linux_riscv64.s(2.65 KB)
📄 rt0_linux_s390x.s(676 B)
📄 rt0_netbsd_386.s(452 B)
📄 rt0_netbsd_amd64.s(309 B)
📄 rt0_netbsd_arm.s(296 B)
📄 rt0_netbsd_arm64.s(1.8 KB)
📄 rt0_openbsd_386.s(454 B)
📄 rt0_openbsd_amd64.s(311 B)
📄 rt0_openbsd_arm.s(298 B)
📄 rt0_openbsd_arm64.s(1.96 KB)
📄 rt0_openbsd_mips64.s(976 B)
📄 rt0_plan9_386.s(523 B)
📄 rt0_plan9_amd64.s(481 B)
📄 rt0_plan9_arm.s(397 B)
📄 rt0_solaris_amd64.s(311 B)
📄 rt0_windows_386.s(1.28 KB)
📄 rt0_windows_amd64.s(986 B)
📄 rt0_windows_arm.s(386 B)
📄 rt0_windows_arm64.s(725 B)
📄 runtime-gdb.py(15.33 KB)
📄 runtime-gdb_test.go(20.93 KB)
📄 runtime-lldb_test.go(4.95 KB)
📄 runtime.go(1.45 KB)
📄 runtime1.go(13.06 KB)
📄 runtime2.go(43.07 KB)
📄 runtime_boring.go(606 B)
📄 runtime_linux_test.go(1.95 KB)
📄 runtime_mmap_test.go(1.77 KB)
📄 runtime_test.go(11.79 KB)
📄 runtime_unix_test.go(1.22 KB)
📄 rwmutex.go(3.53 KB)
📄 rwmutex_test.go(4.19 KB)
📄 select.go(14.84 KB)
📄 sema.go(16.16 KB)
📄 sema_test.go(4.21 KB)
📄 semasleep_test.go(3.05 KB)
📄 sigaction.go(489 B)
📄 signal_386.go(1.72 KB)
📄 signal_aix_ppc64.go(3.55 KB)
📄 signal_amd64.go(2.73 KB)
📄 signal_arm.go(2.54 KB)
📄 signal_arm64.go(3.21 KB)
📄 signal_darwin.go(2.13 KB)
📄 signal_darwin_amd64.go(4 KB)
📄 signal_darwin_arm64.go(3.6 KB)
📄 signal_dragonfly.go(2.17 KB)
📄 signal_dragonfly_amd64.go(2.01 KB)
📄 signal_freebsd.go(2.2 KB)
📄 signal_freebsd_386.go(1.55 KB)
📄 signal_freebsd_amd64.go(2.03 KB)
📄 signal_freebsd_arm.go(2.18 KB)
📄 signal_freebsd_arm64.go(3.23 KB)
📄 signal_linux_386.go(1.59 KB)
📄 signal_linux_amd64.go(2.05 KB)
📄 signal_linux_arm.go(2.12 KB)
📄 signal_linux_arm64.go(2.95 KB)
📄 signal_linux_loong64.go(3.22 KB)
📄 signal_linux_mips64x.go(3.35 KB)
📄 signal_linux_mipsx.go(3.67 KB)
📄 signal_linux_ppc64x.go(3.42 KB)
📄 signal_linux_riscv64.go(2.92 KB)
📄 signal_linux_s390x.go(4.49 KB)
📄 signal_loong64.go(3.09 KB)
📄 signal_mips64x.go(3.18 KB)
📄 signal_mipsx.go(3.06 KB)
📄 signal_netbsd.go(2.18 KB)
📄 signal_netbsd_386.go(1.76 KB)
📄 signal_netbsd_amd64.go(2.33 KB)
📄 signal_netbsd_arm.go(2.3 KB)
📄 signal_netbsd_arm64.go(3.4 KB)
📄 signal_openbsd.go(2.18 KB)
📄 signal_openbsd_386.go(1.58 KB)
📄 signal_openbsd_amd64.go(2.04 KB)
📄 signal_openbsd_arm.go(2.12 KB)
📄 signal_openbsd_arm64.go(3.38 KB)
📄 signal_openbsd_mips64.go(3.28 KB)
📄 signal_plan9.go(1.93 KB)
📄 signal_ppc64x.go(3.64 KB)
📄 signal_riscv64.go(2.89 KB)
📄 signal_solaris.go(4.5 KB)
📄 signal_solaris_amd64.go(2.47 KB)
📄 signal_unix.go(41.88 KB)
📄 signal_windows.go(9.27 KB)
📄 signal_windows_test.go(5.29 KB)
📄 sigqueue.go(7.66 KB)
📄 sigqueue_note.go(648 B)
📄 sigqueue_plan9.go(3.25 KB)
📄 sigtab_aix.go(11.3 KB)
📄 sigtab_linux_generic.go(3.52 KB)
📄 sigtab_linux_mipsx.go(5.95 KB)
📄 sizeclasses.go(9.14 KB)
📄 sizeof_test.go(893 B)
📄 slice.go(9.87 KB)
📄 slice_test.go(10.32 KB)
📄 softfloat64.go(11.54 KB)
📄 softfloat64_test.go(4.04 KB)
📄 stack.go(45.05 KB)
📄 stack_test.go(22.39 KB)
📄 string.go(13.18 KB)
📄 string_test.go(12.61 KB)
📄 stubs.go(19.37 KB)
📄 stubs2.go(1.13 KB)
📄 stubs3.go(274 B)
📄 stubs_386.go(550 B)
📄 stubs_amd64.go(1.2 KB)
📄 stubs_arm.go(531 B)
📄 stubs_arm64.go(555 B)
📄 stubs_linux.go(650 B)
📄 stubs_loong64.go(276 B)
📄 stubs_mips64x.go(364 B)
📄 stubs_mipsx.go(283 B)
📄 stubs_nonlinux.go(298 B)
📄 stubs_ppc64.go(301 B)
📄 stubs_ppc64x.go(453 B)
📄 stubs_riscv64.go(460 B)
📄 stubs_s390x.go(256 B)
📄 symtab.go(35.81 KB)
📄 symtab_test.go(7.48 KB)
📄 sys_aix_ppc64.s(7.42 KB)
📄 sys_arm.go(521 B)
📄 sys_arm64.go(469 B)
📄 sys_darwin.go(17.92 KB)
📄 sys_darwin_amd64.s(19.12 KB)
📄 sys_darwin_arm64.go(1.74 KB)
📄 sys_darwin_arm64.s(15.95 KB)
📄 sys_dragonfly_amd64.s(8.03 KB)
📄 sys_freebsd_386.s(8.41 KB)
📄 sys_freebsd_amd64.s(10.7 KB)
📄 sys_freebsd_arm.s(10.12 KB)
📄 sys_freebsd_arm64.s(9.4 KB)
📄 sys_libc.go(1.84 KB)
📄 sys_linux_386.s(18.31 KB)
📄 sys_linux_amd64.s(16.57 KB)
📄 sys_linux_arm.s(16.12 KB)
📄 sys_linux_arm64.s(18.09 KB)
📄 sys_linux_loong64.s(12.15 KB)
📄 sys_linux_mips64x.s(13.5 KB)
📄 sys_linux_mipsx.s(11.09 KB)
📄 sys_linux_ppc64x.s(22.1 KB)
📄 sys_linux_riscv64.s(12.59 KB)
📄 sys_linux_s390x.s(13.78 KB)
📄 sys_loong64.go(489 B)
📄 sys_mips64x.go(500 B)
📄 sys_mipsx.go(496 B)
📄 sys_netbsd_386.s(9.55 KB)
📄 sys_netbsd_amd64.s(9.51 KB)
📄 sys_netbsd_arm.s(10.41 KB)
📄 sys_netbsd_arm64.s(9.38 KB)
📄 sys_nonppc64x.go(245 B)
📄 sys_openbsd.go(2.59 KB)
📄 sys_openbsd1.go(1.23 KB)
📄 sys_openbsd2.go(8.36 KB)
📄 sys_openbsd3.go(3.37 KB)
📄 sys_openbsd_386.s(20.03 KB)
📄 sys_openbsd_amd64.s(16.64 KB)
📄 sys_openbsd_arm.s(18.15 KB)
📄 sys_openbsd_arm64.s(14.84 KB)
📄 sys_openbsd_mips64.s(8.6 KB)
📄 sys_plan9_386.s(4.48 KB)
📄 sys_plan9_amd64.s(4.55 KB)
📄 sys_plan9_arm.s(7.03 KB)
📄 sys_ppc64x.go(532 B)
📄 sys_riscv64.go(469 B)
📄 sys_s390x.go(469 B)
📄 sys_solaris_amd64.s(6.42 KB)
📄 sys_wasm.go(754 B)
📄 sys_wasm.s(2.65 KB)
📄 sys_windows_386.s(7.65 KB)
📄 sys_windows_amd64.s(8.88 KB)
📄 sys_windows_arm.s(11.97 KB)
📄 sys_windows_arm64.s(11.45 KB)
📄 sys_x86.go(552 B)
📄 syscall2_solaris.go(1.65 KB)
📄 syscall_aix.go(6 KB)
📄 syscall_solaris.go(8.01 KB)
📄 syscall_windows.go(16.95 KB)
📄 syscall_windows_test.go(32.96 KB)
📁 testdata
📄 textflag.h(1.52 KB)
📄 time.go(30.75 KB)
📄 time_fake.go(2.5 KB)
📄 time_linux_amd64.s(2.02 KB)
📄 time_nofake.go(709 B)
📄 time_test.go(2.03 KB)
📄 time_windows.h(753 B)
📄 time_windows_386.s(1.79 KB)
📄 time_windows_amd64.s(871 B)
📄 time_windows_arm.s(2.1 KB)
📄 time_windows_arm64.s(1021 B)
📄 timeasm.go(418 B)
📄 timestub.go(532 B)
📄 timestub2.go(314 B)
📄 tls_arm.s(3.45 KB)
📄 tls_arm64.h(1.1 KB)
📄 tls_arm64.s(1.2 KB)
📄 tls_loong64.s(589 B)
📄 tls_mips64x.s(733 B)
📄 tls_mipsx.s(709 B)
📄 tls_ppc64x.s(1.5 KB)
📄 tls_riscv64.s(726 B)
📄 tls_s390x.s(1.55 KB)
📄 tls_stub.go(260 B)
📄 tls_windows_amd64.go(294 B)
📁 trace
📄 trace.go(45.8 KB)
📄 traceback.go(48.18 KB)
📄 traceback_test.go(11.64 KB)
📄 type.go(17.43 KB)
📄 typekind.go(742 B)
📄 utf8.go(3.39 KB)
📄 vdso_elf32.go(2.76 KB)
📄 vdso_elf64.go(2.84 KB)
📄 vdso_freebsd.go(2.44 KB)
📄 vdso_freebsd_arm.go(454 B)
📄 vdso_freebsd_arm64.go(443 B)
📄 vdso_freebsd_x86.go(1.85 KB)
📄 vdso_in_none.go(443 B)
📄 vdso_linux.go(7.77 KB)
📄 vdso_linux_386.go(669 B)
📄 vdso_linux_amd64.go(685 B)
📄 vdso_linux_arm.go(669 B)
📄 vdso_linux_arm64.go(670 B)
📄 vdso_linux_loong64.go(793 B)
📄 vdso_linux_mips64x.go(850 B)
📄 vdso_linux_ppc64x.go(672 B)
📄 vdso_linux_riscv64.go(666 B)
📄 vdso_linux_s390x.go(681 B)
📄 vlop_386.s(2.02 KB)
📄 vlop_arm.s(7.06 KB)
📄 vlop_arm_test.go(3.75 KB)
📄 vlrt.go(6.71 KB)
📄 wincallback.go(3.45 KB)
📄 write_err.go(291 B)
📄 write_err_android.go(4.65 KB)
📄 zcallback_windows.go(155 B)
📄 zcallback_windows.s(63.02 KB)
📄 zcallback_windows_arm.s(89.32 KB)
📄 zcallback_windows_arm64.s(89.32 KB)

Editing: runtime-gdb_test.go

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package runtime_test

import (
	"bytes"
	"fmt"
	"internal/testenv"
	"os"
	"os/exec"
	"path/filepath"
	"regexp"
	"runtime"
	"strconv"
	"strings"
	"testing"
)

// NOTE: In some configurations, GDB will segfault when sent a SIGWINCH signal.
// Some runtime tests send SIGWINCH to the entire process group, so those tests
// must never run in parallel with GDB tests.
//
// See issue 39021 and https://sourceware.org/bugzilla/show_bug.cgi?id=26056.

func checkGdbEnvironment(t *testing.T) {
	testenv.MustHaveGoBuild(t)
	switch runtime.GOOS {
	case "darwin":
		t.Skip("gdb does not work on darwin")
	case "netbsd":
		t.Skip("gdb does not work with threads on NetBSD; see https://golang.org/issue/22893 and https://gnats.netbsd.org/52548")
	case "windows":
		t.Skip("gdb tests fail on Windows: https://golang.org/issue/22687")
	case "linux":
		if runtime.GOARCH == "ppc64" {
			t.Skip("skipping gdb tests on linux/ppc64; see https://golang.org/issue/17366")
		}
		if runtime.GOARCH == "mips" {
			t.Skip("skipping gdb tests on linux/mips; see https://golang.org/issue/25939")
		}
	case "freebsd":
		t.Skip("skipping gdb tests on FreeBSD; see https://golang.org/issue/29508")
	case "aix":
		if testing.Short() {
			t.Skip("skipping gdb tests on AIX; see https://golang.org/issue/35710")
		}
	case "plan9":
		t.Skip("there is no gdb on Plan 9")
	}
	if final := os.Getenv("GOROOT_FINAL"); final != "" && testenv.GOROOT(t) != final {
		t.Skip("gdb test can fail with GOROOT_FINAL pending")
	}
}

func checkGdbVersion(t *testing.T) {
	// Issue 11214 reports various failures with older versions of gdb.
	out, err := exec.Command("gdb", "--version").CombinedOutput()
	if err != nil {
		t.Skipf("skipping: error executing gdb: %v", err)
	}
	re := regexp.MustCompile(`([0-9]+)\.([0-9]+)`)
	matches := re.FindSubmatch(out)
	if len(matches) < 3 {
		t.Skipf("skipping: can't determine gdb version from\n%s\n", out)
	}
	major, err1 := strconv.Atoi(string(matches[1]))
	minor, err2 := strconv.Atoi(string(matches[2]))
	if err1 != nil || err2 != nil {
		t.Skipf("skipping: can't determine gdb version: %v, %v", err1, err2)
	}
	if major < 7 || (major == 7 && minor < 7) {
		t.Skipf("skipping: gdb version %d.%d too old", major, minor)
	}
	t.Logf("gdb version %d.%d", major, minor)
}

func checkGdbPython(t *testing.T) {
	if runtime.GOOS == "solaris" || runtime.GOOS == "illumos" {
		t.Skip("skipping gdb python tests on illumos and solaris; see golang.org/issue/20821")
	}

cmd := exec.Command("gdb", "-nx", "-q", "--batch", "-iex", "python import sys; print('go gdb python support')")
	out, err := cmd.CombinedOutput()

if err != nil {
		t.Skipf("skipping due to issue running gdb: %v", err)
	}
	if strings.TrimSpace(string(out)) != "go gdb python support" {
		t.Skipf("skipping due to lack of python gdb support: %s", out)
	}
}

// checkCleanBacktrace checks that the given backtrace is well formed and does
// not contain any error messages from GDB.
func checkCleanBacktrace(t *testing.T, backtrace string) {
	backtrace = strings.TrimSpace(backtrace)
	lines := strings.Split(backtrace, "\n")
	if len(lines) == 0 {
		t.Fatalf("empty backtrace")
	}
	for i, l := range lines {
		if !strings.HasPrefix(l, fmt.Sprintf("#%v  ", i)) {
			t.Fatalf("malformed backtrace at line %v: %v", i, l)
		}
	}
	// TODO(mundaym): check for unknown frames (e.g. "??").
}

const helloSource = `
import "fmt"
import "runtime"
var gslice []string
func main() {
	mapvar := make(map[string]string, 13)
	slicemap := make(map[string][]string,11)
    chanint := make(chan int, 10)
    chanstr := make(chan string, 10)
    chanint <- 99
	chanint <- 11
    chanstr <- "spongepants"
    chanstr <- "squarebob"
	mapvar["abc"] = "def"
	mapvar["ghi"] = "jkl"
	slicemap["a"] = []string{"b","c","d"}
    slicemap["e"] = []string{"f","g","h"}
	strvar := "abc"
	ptrvar := &strvar
	slicevar := make([]string, 0, 16)
	slicevar = append(slicevar, mapvar["abc"])
	fmt.Println("hi")
	runtime.KeepAlive(ptrvar)
	_ = ptrvar // set breakpoint here
	gslice = slicevar
	fmt.Printf("%v, %v, %v\n", slicemap, <-chanint, <-chanstr)
	runtime.KeepAlive(mapvar)
}  // END_OF_PROGRAM
`

func lastLine(src []byte) int {
	eop := []byte("END_OF_PROGRAM")
	for i, l := range bytes.Split(src, []byte("\n")) {
		if bytes.Contains(l, eop) {
			return i
		}
	}
	return 0
}

func TestGdbPython(t *testing.T) {
	testGdbPython(t, false)
}

func TestGdbPythonCgo(t *testing.T) {
	if strings.HasPrefix(runtime.GOARCH, "mips") {
		testenv.SkipFlaky(t, 37794)
	}
	testGdbPython(t, true)
}

func testGdbPython(t *testing.T, cgo bool) {
	if cgo {
		testenv.MustHaveCGO(t)
	}

checkGdbEnvironment(t)
	t.Parallel()
	checkGdbVersion(t)
	checkGdbPython(t)

dir := t.TempDir()

var buf bytes.Buffer
	buf.WriteString("package main\n")
	if cgo {
		buf.WriteString(`import "C"` + "\n")
	}
	buf.WriteString(helloSource)

src := buf.Bytes()

// Locate breakpoint line
	var bp int
	lines := bytes.Split(src, []byte("\n"))
	for i, line := range lines {
		if bytes.Contains(line, []byte("breakpoint")) {
			bp = i
			break
		}
	}

err := os.WriteFile(filepath.Join(dir, "main.go"), src, 0644)
	if err != nil {
		t.Fatalf("failed to create file: %v", err)
	}
	nLines := lastLine(src)

cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", "a.exe", "main.go")
	cmd.Dir = dir
	out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
	if err != nil {
		t.Fatalf("building source %v\n%s", err, out)
	}

args := []string{"-nx", "-q", "--batch",
		"-iex", "add-auto-load-safe-path " + filepath.Join(testenv.GOROOT(t), "src", "runtime"),
		"-ex", "set startup-with-shell off",
		"-ex", "set print thread-events off",
	}
	if cgo {
		// When we build the cgo version of the program, the system's
		// linker is used. Some external linkers, like GNU gold,
		// compress the .debug_gdb_scripts into .zdebug_gdb_scripts.
		// Until gold and gdb can work together, temporarily load the
		// python script directly.
		args = append(args,
			"-ex", "source "+filepath.Join(testenv.GOROOT(t), "src", "runtime", "runtime-gdb.py"),
		)
	} else {
		args = append(args,
			"-ex", "info auto-load python-scripts",
		)
	}
	args = append(args,
		"-ex", "set python print-stack full",
		"-ex", fmt.Sprintf("br main.go:%d", bp),
		"-ex", "run",
		"-ex", "echo BEGIN info goroutines\n",
		"-ex", "info goroutines",
		"-ex", "echo END\n",
		"-ex", "echo BEGIN print mapvar\n",
		"-ex", "print mapvar",
		"-ex", "echo END\n",
		"-ex", "echo BEGIN print slicemap\n",
		"-ex", "print slicemap",
		"-ex", "echo END\n",
		"-ex", "echo BEGIN print strvar\n",
		"-ex", "print strvar",
		"-ex", "echo END\n",
		"-ex", "echo BEGIN print chanint\n",
		"-ex", "print chanint",
		"-ex", "echo END\n",
		"-ex", "echo BEGIN print chanstr\n",
		"-ex", "print chanstr",
		"-ex", "echo END\n",
		"-ex", "echo BEGIN info locals\n",
		"-ex", "info locals",
		"-ex", "echo END\n",
		"-ex", "echo BEGIN goroutine 1 bt\n",
		"-ex", "goroutine 1 bt",
		"-ex", "echo END\n",
		"-ex", "echo BEGIN goroutine all bt\n",
		"-ex", "goroutine all bt",
		"-ex", "echo END\n",
		"-ex", "clear main.go:15", // clear the previous break point
		"-ex", fmt.Sprintf("br main.go:%d", nLines), // new break point at the end of main
		"-ex", "c",
		"-ex", "echo BEGIN goroutine 1 bt at the end\n",
		"-ex", "goroutine 1 bt",
		"-ex", "echo END\n",
		filepath.Join(dir, "a.exe"),
	)
	got, err := exec.Command("gdb", args...).CombinedOutput()
	t.Logf("gdb output:\n%s", got)
	if err != nil {
		t.Fatalf("gdb exited with error: %v", err)
	}

firstLine, _, _ := bytes.Cut(got, []byte("\n"))
	if string(firstLine) != "Loading Go Runtime support." {
		// This can happen when using all.bash with
		// GOROOT_FINAL set, because the tests are run before
		// the final installation of the files.
		cmd := exec.Command(testenv.GoToolPath(t), "env", "GOROOT")
		cmd.Env = []string{}
		out, err := cmd.CombinedOutput()
		if err != nil && bytes.Contains(out, []byte("cannot find GOROOT")) {
			t.Skipf("skipping because GOROOT=%s does not exist", testenv.GOROOT(t))
		}

_, file, _, _ := runtime.Caller(1)

t.Logf("package testing source file: %s", file)
		t.Fatalf("failed to load Go runtime support: %s\n%s", firstLine, got)
	}

// Extract named BEGIN...END blocks from output
	partRe := regexp.MustCompile(`(?ms)^BEGIN ([^\n]*)\n(.*?)\nEND`)
	blocks := map[string]string{}
	for _, subs := range partRe.FindAllSubmatch(got, -1) {
		blocks[string(subs[1])] = string(subs[2])
	}

infoGoroutinesRe := regexp.MustCompile(`\*\s+\d+\s+running\s+`)
	if bl := blocks["info goroutines"]; !infoGoroutinesRe.MatchString(bl) {
		t.Fatalf("info goroutines failed: %s", bl)
	}

printMapvarRe1 := regexp.MustCompile(`^\$[0-9]+ = map\[string\]string = {\[(0x[0-9a-f]+\s+)?"abc"\] = (0x[0-9a-f]+\s+)?"def", \[(0x[0-9a-f]+\s+)?"ghi"\] = (0x[0-9a-f]+\s+)?"jkl"}$`)
	printMapvarRe2 := regexp.MustCompile(`^\$[0-9]+ = map\[string\]string = {\[(0x[0-9a-f]+\s+)?"ghi"\] = (0x[0-9a-f]+\s+)?"jkl", \[(0x[0-9a-f]+\s+)?"abc"\] = (0x[0-9a-f]+\s+)?"def"}$`)
	if bl := blocks["print mapvar"]; !printMapvarRe1.MatchString(bl) &&
		!printMapvarRe2.MatchString(bl) {
		t.Fatalf("print mapvar failed: %s", bl)
	}

// 2 orders, and possible differences in spacing.
	sliceMapSfx1 := `map[string][]string = {["e"] = []string = {"f", "g", "h"}, ["a"] = []string = {"b", "c", "d"}}`
	sliceMapSfx2 := `map[string][]string = {["a"] = []string = {"b", "c", "d"}, ["e"] = []string = {"f", "g", "h"}}`
	if bl := strings.ReplaceAll(blocks["print slicemap"], "  ", " "); !strings.HasSuffix(bl, sliceMapSfx1) && !strings.HasSuffix(bl, sliceMapSfx2) {
		t.Fatalf("print slicemap failed: %s", bl)
	}

chanIntSfx := `chan int = {99, 11}`
	if bl := strings.ReplaceAll(blocks["print chanint"], "  ", " "); !strings.HasSuffix(bl, chanIntSfx) {
		t.Fatalf("print chanint failed: %s", bl)
	}

chanStrSfx := `chan string = {"spongepants", "squarebob"}`
	if bl := strings.ReplaceAll(blocks["print chanstr"], "  ", " "); !strings.HasSuffix(bl, chanStrSfx) {
		t.Fatalf("print chanstr failed: %s", bl)
	}

strVarRe := regexp.MustCompile(`^\$[0-9]+ = (0x[0-9a-f]+\s+)?"abc"$`)
	if bl := blocks["print strvar"]; !strVarRe.MatchString(bl) {
		t.Fatalf("print strvar failed: %s", bl)
	}

// The exact format of composite values has changed over time.
	// For issue 16338: ssa decompose phase split a slice into
	// a collection of scalar vars holding its fields. In such cases
	// the DWARF variable location expression should be of the
	// form "var.field" and not just "field".
	// However, the newer dwarf location list code reconstituted
	// aggregates from their fields and reverted their printing
	// back to its original form.
	// Only test that all variables are listed in 'info locals' since
	// different versions of gdb print variables in different
	// order and with differing amount of information and formats.

if bl := blocks["info locals"]; !strings.Contains(bl, "slicevar") ||
		!strings.Contains(bl, "mapvar") ||
		!strings.Contains(bl, "strvar") {
		t.Fatalf("info locals failed: %s", bl)
	}

// Check that the backtraces are well formed.
	checkCleanBacktrace(t, blocks["goroutine 1 bt"])
	checkCleanBacktrace(t, blocks["goroutine 1 bt at the end"])

btGoroutine1Re := regexp.MustCompile(`(?m)^#0\s+(0x[0-9a-f]+\s+in\s+)?main\.main.+at`)
	if bl := blocks["goroutine 1 bt"]; !btGoroutine1Re.MatchString(bl) {
		t.Fatalf("goroutine 1 bt failed: %s", bl)
	}

if bl := blocks["goroutine all bt"]; !btGoroutine1Re.MatchString(bl) {
		t.Fatalf("goroutine all bt failed: %s", bl)
	}

btGoroutine1AtTheEndRe := regexp.MustCompile(`(?m)^#0\s+(0x[0-9a-f]+\s+in\s+)?main\.main.+at`)
	if bl := blocks["goroutine 1 bt at the end"]; !btGoroutine1AtTheEndRe.MatchString(bl) {
		t.Fatalf("goroutine 1 bt at the end failed: %s", bl)
	}
}

const backtraceSource = `
package main

//go:noinline
func aaa() bool { return bbb() }

//go:noinline
func bbb() bool { return ccc() }

//go:noinline
func ccc() bool { return ddd() }

//go:noinline
func ddd() bool { return f() }

//go:noinline
func eee() bool { return true }

var f = eee

func main() {
	_ = aaa()
}
`

// TestGdbBacktrace tests that gdb can unwind the stack correctly
// using only the DWARF debug info.
func TestGdbBacktrace(t *testing.T) {
	if runtime.GOOS == "netbsd" {
		testenv.SkipFlaky(t, 15603)
	}

checkGdbEnvironment(t)
	t.Parallel()
	checkGdbVersion(t)

dir := t.TempDir()

// Build the source code.
	src := filepath.Join(dir, "main.go")
	err := os.WriteFile(src, []byte(backtraceSource), 0644)
	if err != nil {
		t.Fatalf("failed to create file: %v", err)
	}
	cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", "a.exe", "main.go")
	cmd.Dir = dir
	out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
	if err != nil {
		t.Fatalf("building source %v\n%s", err, out)
	}

// Execute gdb commands.
	args := []string{"-nx", "-batch",
		"-iex", "add-auto-load-safe-path " + filepath.Join(testenv.GOROOT(t), "src", "runtime"),
		"-ex", "set startup-with-shell off",
		"-ex", "break main.eee",
		"-ex", "run",
		"-ex", "backtrace",
		"-ex", "continue",
		filepath.Join(dir, "a.exe"),
	}
	got, err := testenv.RunWithTimeout(t, exec.Command("gdb", args...))
	t.Logf("gdb output:\n%s", got)
	if err != nil {
		if bytes.Contains(got, []byte("internal-error: wait returned unexpected status 0x0")) {
			// GDB bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28551
			testenv.SkipFlaky(t, 43068)
		}
		if bytes.Contains(got, []byte("Couldn't get registers: No such process.")) {
			// GDB bug: https://sourceware.org/bugzilla/show_bug.cgi?id=9086
			testenv.SkipFlaky(t, 50838)
		}
		if bytes.Contains(got, []byte(" exited normally]\n")) {
			// GDB bug: Sometimes the inferior exits fine,
			// but then GDB hangs.
			testenv.SkipFlaky(t, 37405)
		}
		t.Fatalf("gdb exited with error: %v", err)
	}

// Check that the backtrace matches the source code.
	bt := []string{
		"eee",
		"ddd",
		"ccc",
		"bbb",
		"aaa",
		"main",
	}
	for i, name := range bt {
		s := fmt.Sprintf("#%v.*main\\.%v", i, name)
		re := regexp.MustCompile(s)
		if found := re.Find(got) != nil; !found {
			t.Fatalf("could not find '%v' in backtrace", s)
		}
	}
}

const autotmpTypeSource = `
package main

type astruct struct {
	a, b int
}

func main() {
	var iface interface{} = map[string]astruct{}
	var iface2 interface{} = []astruct{}
	println(iface, iface2)
}
`

// TestGdbAutotmpTypes ensures that types of autotmp variables appear in .debug_info
// See bug #17830.
func TestGdbAutotmpTypes(t *testing.T) {
	checkGdbEnvironment(t)
	t.Parallel()
	checkGdbVersion(t)

if runtime.GOOS == "aix" && testing.Short() {
		t.Skip("TestGdbAutotmpTypes is too slow on aix/ppc64")
	}

dir := t.TempDir()

// Build the source code.
	src := filepath.Join(dir, "main.go")
	err := os.WriteFile(src, []byte(autotmpTypeSource), 0644)
	if err != nil {
		t.Fatalf("failed to create file: %v", err)
	}
	cmd := exec.Command(testenv.GoToolPath(t), "build", "-gcflags=all=-N -l", "-o", "a.exe", "main.go")
	cmd.Dir = dir
	out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
	if err != nil {
		t.Fatalf("building source %v\n%s", err, out)
	}

// Execute gdb commands.
	args := []string{"-nx", "-batch",
		"-iex", "add-auto-load-safe-path " + filepath.Join(testenv.GOROOT(t), "src", "runtime"),
		"-ex", "set startup-with-shell off",
		// Some gdb may set scheduling-locking as "step" by default. This prevents background tasks
		// (e.g GC) from completing which may result in a hang when executing the step command.
		// See #49852.
		"-ex", "set scheduler-locking off",
		"-ex", "break main.main",
		"-ex", "run",
		"-ex", "step",
		"-ex", "info types astruct",
		filepath.Join(dir, "a.exe"),
	}
	got, err := exec.Command("gdb", args...).CombinedOutput()
	t.Logf("gdb output:\n%s", got)
	if err != nil {
		t.Fatalf("gdb exited with error: %v", err)
	}

sgot := string(got)

// Check that the backtrace matches the source code.
	types := []string{
		"[]main.astruct;",
		"bucket<string,main.astruct>;",
		"hash<string,main.astruct>;",
		"main.astruct;",
		"hash<string,main.astruct> * map[string]main.astruct;",
	}
	for _, name := range types {
		if !strings.Contains(sgot, name) {
			t.Fatalf("could not find %s in 'info typrs astruct' output", name)
		}
	}
}

const constsSource = `
package main

const aConstant int = 42
const largeConstant uint64 = ^uint64(0)
const minusOne int64 = -1

func main() {
	println("hello world")
}
`

func TestGdbConst(t *testing.T) {
	checkGdbEnvironment(t)
	t.Parallel()
	checkGdbVersion(t)

dir := t.TempDir()

// Build the source code.
	src := filepath.Join(dir, "main.go")
	err := os.WriteFile(src, []byte(constsSource), 0644)
	if err != nil {
		t.Fatalf("failed to create file: %v", err)
	}
	cmd := exec.Command(testenv.GoToolPath(t), "build", "-gcflags=all=-N -l", "-o", "a.exe", "main.go")
	cmd.Dir = dir
	out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
	if err != nil {
		t.Fatalf("building source %v\n%s", err, out)
	}

// Execute gdb commands.
	args := []string{"-nx", "-batch",
		"-iex", "add-auto-load-safe-path " + filepath.Join(testenv.GOROOT(t), "src", "runtime"),
		"-ex", "set startup-with-shell off",
		"-ex", "break main.main",
		"-ex", "run",
		"-ex", "print main.aConstant",
		"-ex", "print main.largeConstant",
		"-ex", "print main.minusOne",
		"-ex", "print 'runtime.mSpanInUse'",
		"-ex", "print 'runtime._PageSize'",
		filepath.Join(dir, "a.exe"),
	}
	got, err := exec.Command("gdb", args...).CombinedOutput()
	t.Logf("gdb output:\n%s", got)
	if err != nil {
		t.Fatalf("gdb exited with error: %v", err)
	}

sgot := strings.ReplaceAll(string(got), "\r\n", "\n")

if !strings.Contains(sgot, "\n$1 = 42\n$2 = 18446744073709551615\n$3 = -1\n$4 = 1 '\\001'\n$5 = 8192") {
		t.Fatalf("output mismatch")
	}
}

const panicSource = `
package main

import "runtime/debug"

func main() {
	debug.SetTraceback("crash")
	crash()
}

func crash() {
	panic("panic!")
}
`

// TestGdbPanic tests that gdb can unwind the stack correctly
// from SIGABRTs from Go panics.
func TestGdbPanic(t *testing.T) {
	checkGdbEnvironment(t)
	t.Parallel()
	checkGdbVersion(t)

dir := t.TempDir()

// Build the source code.
	src := filepath.Join(dir, "main.go")
	err := os.WriteFile(src, []byte(panicSource), 0644)
	if err != nil {
		t.Fatalf("failed to create file: %v", err)
	}
	cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", "a.exe", "main.go")
	cmd.Dir = dir
	out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
	if err != nil {
		t.Fatalf("building source %v\n%s", err, out)
	}

// Execute gdb commands.
	args := []string{"-nx", "-batch",
		"-iex", "add-auto-load-safe-path " + filepath.Join(testenv.GOROOT(t), "src", "runtime"),
		"-ex", "set startup-with-shell off",
		"-ex", "run",
		"-ex", "backtrace",
		filepath.Join(dir, "a.exe"),
	}
	got, err := exec.Command("gdb", args...).CombinedOutput()
	t.Logf("gdb output:\n%s", got)
	if err != nil {
		t.Fatalf("gdb exited with error: %v", err)
	}

// Check that the backtrace matches the source code.
	bt := []string{
		`crash`,
		`main`,
	}
	for _, name := range bt {
		s := fmt.Sprintf("(#.* .* in )?main\\.%v", name)
		re := regexp.MustCompile(s)
		if found := re.Find(got) != nil; !found {
			t.Fatalf("could not find '%v' in backtrace", s)
		}
	}
}

const InfCallstackSource = `
package main
import "C"
import "time"

func loop() {
        for i := 0; i < 1000; i++ {
                time.Sleep(time.Millisecond*5)
        }
}

func main() {
        go loop()
        time.Sleep(time.Second * 1)
}
`

// TestGdbInfCallstack tests that gdb can unwind the callstack of cgo programs
// on arm64 platforms without endless frames of function 'crossfunc1'.
// https://golang.org/issue/37238
func TestGdbInfCallstack(t *testing.T) {
	checkGdbEnvironment(t)

testenv.MustHaveCGO(t)
	if runtime.GOARCH != "arm64" {
		t.Skip("skipping infinite callstack test on non-arm64 arches")
	}

t.Parallel()
	checkGdbVersion(t)

dir := t.TempDir()

// Build the source code.
	src := filepath.Join(dir, "main.go")
	err := os.WriteFile(src, []byte(InfCallstackSource), 0644)
	if err != nil {
		t.Fatalf("failed to create file: %v", err)
	}
	cmd := exec.Command(testenv.GoToolPath(t), "build", "-o", "a.exe", "main.go")
	cmd.Dir = dir
	out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
	if err != nil {
		t.Fatalf("building source %v\n%s", err, out)
	}

// Execute gdb commands.
	// 'setg_gcc' is the first point where we can reproduce the issue with just one 'run' command.
	args := []string{"-nx", "-batch",
		"-iex", "add-auto-load-safe-path " + filepath.Join(testenv.GOROOT(t), "src", "runtime"),
		"-ex", "set startup-with-shell off",
		"-ex", "break setg_gcc",
		"-ex", "run",
		"-ex", "backtrace 3",
		"-ex", "disable 1",
		"-ex", "continue",
		filepath.Join(dir, "a.exe"),
	}
	got, err := exec.Command("gdb", args...).CombinedOutput()
	t.Logf("gdb output:\n%s", got)
	if err != nil {
		t.Fatalf("gdb exited with error: %v", err)
	}

// Check that the backtrace matches
	// We check the 3 inner most frames only as they are present certainly, according to gcc_<OS>_arm64.c
	bt := []string{
		`setg_gcc`,
		`crosscall1`,
		`threadentry`,
	}
	for i, name := range bt {
		s := fmt.Sprintf("#%v.*%v", i, name)
		re := regexp.MustCompile(s)
		if found := re.Find(got) != nil; !found {
			t.Fatalf("could not find '%v' in backtrace", s)
		}
	}
}

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