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Current Path: /opt/golang/1.17.2/src/runtime

📁 ..
📄 HACKING.md(13.07 KB)
📄 Makefile(178 B)
📄 abi_test.go(2.88 KB)
📄 alg.go(9.45 KB)
📄 asm.s(715 B)
📄 asm_386.s(40.27 KB)
📄 asm_amd64.s(56.93 KB)
📄 asm_arm.s(30.23 KB)
📄 asm_arm64.s(33 KB)
📄 asm_mips64x.s(22.43 KB)
📄 asm_mipsx.s(24.39 KB)
📄 asm_ppc64x.h(1023 B)
📄 asm_ppc64x.s(29.16 KB)
📄 asm_riscv64.s(22.43 KB)
📄 asm_s390x.s(26.04 KB)
📄 asm_wasm.s(9.8 KB)
📄 atomic_arm64.s(259 B)
📄 atomic_mips64x.s(326 B)
📄 atomic_mipsx.s(284 B)
📄 atomic_pointer.go(2.62 KB)
📄 atomic_ppc64x.s(461 B)
📄 atomic_riscv64.s(275 B)
📄 auxv_none.go(360 B)
📄 callers_test.go(7.72 KB)
📁 cgo
📄 cgo.go(2.01 KB)
📄 cgo_mmap.go(2.42 KB)
📄 cgo_ppc64x.go(439 B)
📄 cgo_sigaction.go(3.17 KB)
📄 cgocall.go(18.88 KB)
📄 cgocallback.go(317 B)
📄 cgocheck.go(6.83 KB)
📄 chan.go(23.54 KB)
📄 chan_test.go(23.01 KB)
📄 chanbarrier_test.go(1.4 KB)
📄 checkptr.go(3.29 KB)
📄 checkptr_test.go(1.62 KB)
📄 closure_test.go(937 B)
📄 compiler.go(413 B)
📄 complex.go(1.59 KB)
📄 complex_test.go(1.05 KB)
📄 conv_wasm_test.go(2.96 KB)
📄 cpuflags.go(800 B)
📄 cpuflags_amd64.go(533 B)
📄 cpuflags_arm64.go(334 B)
📄 cpuprof.go(6.92 KB)
📄 cputicks.go(497 B)
📄 crash_cgo_test.go(16.17 KB)
📄 crash_nonunix_test.go(429 B)
📄 crash_test.go(20.96 KB)
📄 crash_unix_test.go(8.52 KB)
📁 debug
📄 debug.go(1.63 KB)
📄 debug_test.go(6.82 KB)
📄 debugcall.go(6.21 KB)
📄 debuglog.go(17.49 KB)
📄 debuglog_off.go(377 B)
📄 debuglog_on.go(1.11 KB)
📄 debuglog_test.go(4.56 KB)
📄 defer_test.go(10.32 KB)
📄 defs1_linux.go(862 B)
📄 defs1_netbsd_386.go(2.84 KB)
📄 defs1_netbsd_amd64.go(3.07 KB)
📄 defs1_netbsd_arm.go(2.96 KB)
📄 defs1_netbsd_arm64.go(3.18 KB)
📄 defs1_solaris_amd64.go(4.02 KB)
📄 defs2_linux.go(3.52 KB)
📄 defs3_linux.go(1.11 KB)
📄 defs_aix.go(4.18 KB)
📄 defs_aix_ppc64.go(3.63 KB)
📄 defs_arm_linux.go(2.69 KB)
📄 defs_darwin.go(3.79 KB)
📄 defs_darwin_amd64.go(6.07 KB)
📄 defs_darwin_arm64.go(3.89 KB)
📄 defs_dragonfly.go(2.63 KB)
📄 defs_dragonfly_amd64.go(3.31 KB)
📄 defs_freebsd.go(3.86 KB)
📄 defs_freebsd_386.go(4.38 KB)
📄 defs_freebsd_amd64.go(4.65 KB)
📄 defs_freebsd_arm.go(3.71 KB)
📄 defs_freebsd_arm64.go(4.03 KB)
📄 defs_illumos_amd64.go(285 B)
📄 defs_linux.go(3.05 KB)
📄 defs_linux_386.go(3.77 KB)
📄 defs_linux_amd64.go(4.28 KB)
📄 defs_linux_arm.go(3.45 KB)
📄 defs_linux_arm64.go(3.21 KB)
📄 defs_linux_mips64x.go(3.24 KB)
📄 defs_linux_mipsx.go(3.21 KB)
📄 defs_linux_ppc64.go(3.28 KB)
📄 defs_linux_ppc64le.go(3.28 KB)
📄 defs_linux_riscv64.go(3.27 KB)
📄 defs_linux_s390x.go(2.76 KB)
📄 defs_netbsd.go(2.76 KB)
📄 defs_netbsd_386.go(872 B)
📄 defs_netbsd_amd64.go(1.03 KB)
📄 defs_netbsd_arm.go(781 B)
📄 defs_openbsd.go(3.1 KB)
📄 defs_openbsd_386.go(2.89 KB)
📄 defs_openbsd_amd64.go(3.09 KB)
📄 defs_openbsd_arm.go(3 KB)
📄 defs_openbsd_arm64.go(2.76 KB)
📄 defs_openbsd_mips64.go(2.66 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(3.35 KB)
📄 defs_solaris_amd64.go(1021 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(5.25 KB)
📄 duff_mips64x.s(11.31 KB)
📄 duff_ppc64x.s(2.43 KB)
📄 duff_riscv64.s(11.38 KB)
📄 duff_s390x.s(507 B)
📄 env_plan9.go(2.99 KB)
📄 env_posix.go(1.95 KB)
📄 env_test.go(1.16 KB)
📄 error.go(9.23 KB)
📄 example_test.go(1.55 KB)
📄 export_aix_test.go(204 B)
📄 export_arm_test.go(226 B)
📄 export_darwin_test.go(351 B)
📄 export_debug_regabiargs_off_test.go(416 B)
📄 export_debug_regabiargs_on_test.go(1.39 KB)
📄 export_debug_test.go(5.86 KB)
📄 export_debuglog_test.go(1.27 KB)
📄 export_futex_test.go(570 B)
📄 export_linux_test.go(429 B)
📄 export_mmap_test.go(571 B)
📄 export_pipe2_test.go(436 B)
📄 export_pipe_test.go(240 B)
📄 export_solaris_test.go(282 B)
📄 export_test.go(30.12 KB)
📄 export_unix_test.go(2.35 KB)
📄 export_windows_test.go(652 B)
📄 extern.go(12.58 KB)
📄 fastlog2.go(1.22 KB)
📄 fastlog2_test.go(784 B)
📄 fastlog2table.go(904 B)
📄 float.go(1.35 KB)
📄 funcdata.h(2.47 KB)
📄 futex_test.go(2.15 KB)
📄 gc_test.go(19.21 KB)
📄 gcinfo_test.go(5.69 KB)
📄 go_tls.h(366 B)
📄 hash32.go(1.61 KB)
📄 hash64.go(2.01 KB)
📄 hash_test.go(16.5 KB)
📄 heapdump.go(17.74 KB)
📄 histogram.go(6.42 KB)
📄 histogram_test.go(1.85 KB)
📄 iface.go(16.13 KB)
📄 iface_test.go(7.51 KB)
📁 internal
📄 lfstack.go(1.77 KB)
📄 lfstack_32bit.go(562 B)
📄 lfstack_64bit.go(2.24 KB)
📄 lfstack_test.go(2.78 KB)
📄 libfuzzer.go(2.6 KB)
📄 libfuzzer_amd64.s(961 B)
📄 libfuzzer_arm64.s(772 B)
📄 lock_futex.go(5.22 KB)
📄 lock_js.go(5.81 KB)
📄 lock_sema.go(6.8 KB)
📄 lockrank.go(11.62 KB)
📄 lockrank_off.go(1.17 KB)
📄 lockrank_on.go(9.84 KB)
📄 lockrank_test.go(1.15 KB)
📄 malloc.go(52.33 KB)
📄 malloc_test.go(10.83 KB)
📄 map.go(42.47 KB)
📄 map_benchmark_test.go(10.51 KB)
📄 map_fast32.go(12.63 KB)
📄 map_fast64.go(12.82 KB)
📄 map_faststr.go(14.15 KB)
📄 map_test.go(27.52 KB)
📄 mbarrier.go(12.2 KB)
📄 mbitmap.go(65.27 KB)
📄 mcache.go(9.68 KB)
📄 mcentral.go(7.8 KB)
📄 mcheckmark.go(2.81 KB)
📄 mem_aix.go(1.94 KB)
📄 mem_bsd.go(2.12 KB)
📄 mem_darwin.go(1.88 KB)
📄 mem_js.go(2.35 KB)
📄 mem_linux.go(5.59 KB)
📄 mem_plan9.go(4.53 KB)
📄 mem_windows.go(3.87 KB)
📄 memclr_386.s(2.42 KB)
📄 memclr_amd64.s(3.89 KB)
📄 memclr_arm.s(2.6 KB)
📄 memclr_arm64.s(3.65 KB)
📄 memclr_mips64x.s(1.75 KB)
📄 memclr_mipsx.s(1.35 KB)
📄 memclr_plan9_386.s(983 B)
📄 memclr_plan9_amd64.s(511 B)
📄 memclr_ppc64x.s(4.31 KB)
📄 memclr_riscv64.s(926 B)
📄 memclr_s390x.s(1.96 KB)
📄 memclr_wasm.s(622 B)
📄 memmove_386.s(4.46 KB)
📄 memmove_amd64.s(12.66 KB)
📄 memmove_arm.s(5.9 KB)
📄 memmove_arm64.s(6 KB)
📄 memmove_linux_amd64_test.go(1.6 KB)
📄 memmove_mips64x.s(1.85 KB)
📄 memmove_mipsx.s(4.42 KB)
📄 memmove_plan9_386.s(3.06 KB)
📄 memmove_plan9_amd64.s(3.04 KB)
📄 memmove_ppc64x.s(4.11 KB)
📄 memmove_riscv64.s(1.81 KB)
📄 memmove_s390x.s(2.92 KB)
📄 memmove_test.go(12.04 KB)
📄 memmove_wasm.s(1.74 KB)
📁 metrics
📄 metrics.go(17.69 KB)
📄 metrics_test.go(12.48 KB)
📄 mfinal.go(15.76 KB)
📄 mfinal_test.go(5.85 KB)
📄 mfixalloc.go(2.73 KB)
📄 mgc.go(55.18 KB)
📄 mgcmark.go(45.54 KB)
📄 mgcpacer.go(29.56 KB)
📄 mgcscavenge.go(35.05 KB)
📄 mgcscavenge_test.go(12.74 KB)
📄 mgcstack.go(10.58 KB)
📄 mgcsweep.go(23.56 KB)
📄 mgcwork.go(12.82 KB)
📄 mheap.go(66.31 KB)
📄 mkduff.go(7.19 KB)
📄 mkfastlog2table.go(1.32 KB)
📄 mkpreempt.go(14.17 KB)
📄 mksizeclasses.go(9.31 KB)
📄 mmap.go(990 B)
📄 mpagealloc.go(36.77 KB)
📄 mpagealloc_32bit.go(3.81 KB)
📄 mpagealloc_64bit.go(6.65 KB)
📄 mpagealloc_test.go(32.38 KB)
📄 mpagecache.go(5.28 KB)
📄 mpagecache_test.go(9.93 KB)
📄 mpallocbits.go(12.01 KB)
📄 mpallocbits_test.go(13.69 KB)
📄 mprof.go(25.82 KB)
📄 mranges.go(11.84 KB)
📄 mranges_test.go(5.68 KB)
📁 msan
📄 msan.go(1.51 KB)
📄 msan0.go(741 B)
📄 msan_amd64.s(2.32 KB)
📄 msan_arm64.s(2.01 KB)
📄 msize.go(777 B)
📄 mspanset.go(12.2 KB)
📄 mstats.go(30.65 KB)
📄 mwbbuf.go(9.3 KB)
📄 nbpipe_fcntl_libc_test.go(499 B)
📄 nbpipe_fcntl_unix_test.go(507 B)
📄 nbpipe_pipe.go(426 B)
📄 nbpipe_pipe2.go(592 B)
📄 nbpipe_test.go(2.26 KB)
📄 net_plan9.go(645 B)
📄 netpoll.go(16.24 KB)
📄 netpoll_aix.go(4.87 KB)
📄 netpoll_epoll.go(4.21 KB)
📄 netpoll_fake.go(670 B)
📄 netpoll_kqueue.go(4.64 KB)
📄 netpoll_os_test.go(360 B)
📄 netpoll_solaris.go(10.75 KB)
📄 netpoll_stub.go(1.42 KB)
📄 netpoll_windows.go(3.75 KB)
📄 norace_linux_test.go(905 B)
📄 norace_test.go(996 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(3.88 KB)
📄 os3_solaris.go(17.02 KB)
📄 os_aix.go(8.06 KB)
📄 os_android.go(463 B)
📄 os_darwin.go(11.54 KB)
📄 os_darwin_arm64.go(416 B)
📄 os_dragonfly.go(6.46 KB)
📄 os_freebsd.go(11.2 KB)
📄 os_freebsd2.go(507 B)
📄 os_freebsd_amd64.go(529 B)
📄 os_freebsd_arm.go(1.32 KB)
📄 os_freebsd_arm64.go(398 B)
📄 os_freebsd_noauxv.go(264 B)
📄 os_illumos.go(3.93 KB)
📄 os_js.go(3.26 KB)
📄 os_linux.go(13.47 KB)
📄 os_linux_arm.go(1.35 KB)
📄 os_linux_arm64.go(572 B)
📄 os_linux_be64.go(862 B)
📄 os_linux_generic.go(950 B)
📄 os_linux_mips64x.go(1.11 KB)
📄 os_linux_mipsx.go(1.09 KB)
📄 os_linux_noauxv.go(408 B)
📄 os_linux_novdso.go(387 B)
📄 os_linux_ppc64x.go(566 B)
📄 os_linux_riscv64.go(198 B)
📄 os_linux_s390x.go(316 B)
📄 os_linux_x86.go(270 B)
📄 os_netbsd.go(9.09 KB)
📄 os_netbsd_386.go(588 B)
📄 os_netbsd_amd64.go(585 B)
📄 os_netbsd_arm.go(1.13 KB)
📄 os_netbsd_arm64.go(827 B)
📄 os_nonopenbsd.go(456 B)
📄 os_only_solaris.go(376 B)
📄 os_openbsd.go(6.01 KB)
📄 os_openbsd_arm.go(749 B)
📄 os_openbsd_arm64.go(416 B)
📄 os_openbsd_libc.go(1.7 KB)
📄 os_openbsd_mips64.go(416 B)
📄 os_openbsd_syscall.go(1.27 KB)
📄 os_openbsd_syscall1.go(466 B)
📄 os_openbsd_syscall2.go(2.5 KB)
📄 os_plan9.go(10.2 KB)
📄 os_plan9_arm.go(462 B)
📄 os_solaris.go(6.49 KB)
📄 os_windows.go(43.68 KB)
📄 os_windows_arm.go(511 B)
📄 os_windows_arm64.go(339 B)
📄 panic.go(44.28 KB)
📄 panic32.go(4.83 KB)
📄 panic_test.go(1.71 KB)
📄 plugin.go(4.27 KB)
📁 pprof
📄 preempt.go(15.4 KB)
📄 preempt_386.s(1.07 KB)
📄 preempt_amd64.s(1.81 KB)
📄 preempt_arm.s(1.66 KB)
📄 preempt_arm64.s(2.99 KB)
📄 preempt_mips64x.s(2.93 KB)
📄 preempt_mipsx.s(2.89 KB)
📄 preempt_nonwindows.go(309 B)
📄 preempt_ppc64x.s(2.92 KB)
📄 preempt_riscv64.s(2.48 KB)
📄 preempt_s390x.s(1.19 KB)
📄 preempt_wasm.s(365 B)
📄 print.go(5.95 KB)
📄 proc.go(181.46 KB)
📄 proc_runtime_test.go(820 B)
📄 proc_test.go(25.02 KB)
📄 profbuf.go(18.26 KB)
📄 profbuf_test.go(8.65 KB)
📄 proflabel.go(1.52 KB)
📁 race
📄 race.go(18.56 KB)
📄 race0.go(2.81 KB)
📄 race_amd64.s(14.46 KB)
📄 race_arm64.s(13.71 KB)
📄 race_ppc64le.s(17.72 KB)
📄 rand_test.go(783 B)
📄 rdebug.go(553 B)
📄 relax_stub.go(617 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(2.27 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(2.46 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(2.39 KB)
📄 rt0_linux_mips64x.s(1.03 KB)
📄 rt0_linux_mipsx.s(835 B)
📄 rt0_linux_ppc64.s(865 B)
📄 rt0_linux_ppc64le.s(3.88 KB)
📄 rt0_linux_riscv64.s(370 B)
📄 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(2.38 KB)
📄 rt0_openbsd_386.s(454 B)
📄 rt0_openbsd_amd64.s(311 B)
📄 rt0_openbsd_arm.s(298 B)
📄 rt0_openbsd_arm64.s(2.54 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(15.02 KB)
📄 runtime-gdb_test.go(20.19 KB)
📄 runtime-lldb_test.go(4.95 KB)
📄 runtime.go(1.42 KB)
📄 runtime1.go(12.63 KB)
📄 runtime2.go(42.27 KB)
📄 runtime_linux_test.go(1.46 KB)
📄 runtime_mmap_test.go(1.91 KB)
📄 runtime_test.go(7.81 KB)
📄 runtime_unix_test.go(1.29 KB)
📄 rwmutex.go(3.53 KB)
📄 rwmutex_test.go(4.03 KB)
📄 select.go(14.45 KB)
📄 sema.go(16.08 KB)
📄 sema_test.go(2.5 KB)
📄 semasleep_test.go(1.65 KB)
📄 sigaction.go(543 B)
📄 signal_386.go(1.72 KB)
📄 signal_aix_ppc64.go(3.56 KB)
📄 signal_amd64.go(2.71 KB)
📄 signal_arm.go(2.56 KB)
📄 signal_arm64.go(3.16 KB)
📄 signal_darwin.go(2.13 KB)
📄 signal_darwin_amd64.go(3.85 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(2.13 KB)
📄 signal_linux_arm64.go(2.95 KB)
📄 signal_linux_mips64x.go(3.39 KB)
📄 signal_linux_mipsx.go(3.7 KB)
📄 signal_linux_ppc64x.go(3.46 KB)
📄 signal_linux_riscv64.go(2.92 KB)
📄 signal_linux_s390x.go(4.43 KB)
📄 signal_mips64x.go(3.2 KB)
📄 signal_mipsx.go(3.07 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)
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📁 testdata
📄 textflag.h(1.52 KB)
📄 time.go(30.56 KB)
📄 time_fake.go(2.38 KB)
📄 time_linux_amd64.s(2.18 KB)
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📄 time_windows.h(694 B)
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📄 timeasm.go(468 B)
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📄 tls_stub.go(294 B)
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📄 trace.go(38.36 KB)
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📄 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_mips64x.go(892 B)
📄 vdso_linux_ppc64x.go(712 B)
📄 vlop_386.s(2.02 KB)
📄 vlop_arm.s(7.06 KB)
📄 vlop_arm_test.go(3.75 KB)
📄 vlrt.go(5.91 KB)
📄 wincallback.go(3.52 KB)
📄 write_err.go(310 B)
📄 write_err_android.go(4.65 KB)
📄 zcallback_windows.go(155 B)
📄 zcallback_windows.s(63.05 KB)
📄 zcallback_windows_arm.s(89.34 KB)
📄 zcallback_windows_arm64.s(89.34 KB)

Editing: crash_test.go

// Copyright 2012 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"
	"flag"
	"fmt"
	"internal/testenv"
	"os"
	"os/exec"
	"path/filepath"
	"regexp"
	"runtime"
	"strconv"
	"strings"
	"sync"
	"testing"
	"time"
)

var toRemove []string

func TestMain(m *testing.M) {
	status := m.Run()
	for _, file := range toRemove {
		os.RemoveAll(file)
	}
	os.Exit(status)
}

var testprog struct {
	sync.Mutex
	dir    string
	target map[string]buildexe
}

type buildexe struct {
	exe string
	err error
}

func runTestProg(t *testing.T, binary, name string, env ...string) string {
	if *flagQuick {
		t.Skip("-quick")
	}

testenv.MustHaveGoBuild(t)

exe, err := buildTestProg(t, binary)
	if err != nil {
		t.Fatal(err)
	}

return runBuiltTestProg(t, exe, name, env...)
}

func runBuiltTestProg(t *testing.T, exe, name string, env ...string) string {
	if *flagQuick {
		t.Skip("-quick")
	}

testenv.MustHaveGoBuild(t)

cmd := testenv.CleanCmdEnv(exec.Command(exe, name))
	cmd.Env = append(cmd.Env, env...)
	if testing.Short() {
		cmd.Env = append(cmd.Env, "RUNTIME_TEST_SHORT=1")
	}
	var b bytes.Buffer
	cmd.Stdout = &b
	cmd.Stderr = &b
	if err := cmd.Start(); err != nil {
		t.Fatalf("starting %s %s: %v", exe, name, err)
	}

// If the process doesn't complete within 1 minute,
	// assume it is hanging and kill it to get a stack trace.
	p := cmd.Process
	done := make(chan bool)
	go func() {
		scale := 1
		// This GOARCH/GOOS test is copied from cmd/dist/test.go.
		// TODO(iant): Have cmd/dist update the environment variable.
		if runtime.GOARCH == "arm" || runtime.GOOS == "windows" {
			scale = 2
		}
		if s := os.Getenv("GO_TEST_TIMEOUT_SCALE"); s != "" {
			if sc, err := strconv.Atoi(s); err == nil {
				scale = sc
			}
		}

select {
		case <-done:
		case <-time.After(time.Duration(scale) * time.Minute):
			p.Signal(sigquit)
		}
	}()

if err := cmd.Wait(); err != nil {
		t.Logf("%s %s exit status: %v", exe, name, err)
	}
	close(done)

return b.String()
}

func buildTestProg(t *testing.T, binary string, flags ...string) (string, error) {
	if *flagQuick {
		t.Skip("-quick")
	}

testprog.Lock()
	defer testprog.Unlock()
	if testprog.dir == "" {
		dir, err := os.MkdirTemp("", "go-build")
		if err != nil {
			t.Fatalf("failed to create temp directory: %v", err)
		}
		testprog.dir = dir
		toRemove = append(toRemove, dir)
	}

if testprog.target == nil {
		testprog.target = make(map[string]buildexe)
	}
	name := binary
	if len(flags) > 0 {
		name += "_" + strings.Join(flags, "_")
	}
	target, ok := testprog.target[name]
	if ok {
		return target.exe, target.err
	}

exe := filepath.Join(testprog.dir, name+".exe")
	cmd := exec.Command(testenv.GoToolPath(t), append([]string{"build", "-o", exe}, flags...)...)
	cmd.Dir = "testdata/" + binary
	out, err := testenv.CleanCmdEnv(cmd).CombinedOutput()
	if err != nil {
		target.err = fmt.Errorf("building %s %v: %v\n%s", binary, flags, err, out)
		testprog.target[name] = target
		return "", target.err
	}
	target.exe = exe
	testprog.target[name] = target
	return exe, nil
}

func TestVDSO(t *testing.T) {
	t.Parallel()
	output := runTestProg(t, "testprog", "SignalInVDSO")
	want := "success\n"
	if output != want {
		t.Fatalf("output:\n%s\n\nwanted:\n%s", output, want)
	}
}

func testCrashHandler(t *testing.T, cgo bool) {
	type crashTest struct {
		Cgo bool
	}
	var output string
	if cgo {
		output = runTestProg(t, "testprogcgo", "Crash")
	} else {
		output = runTestProg(t, "testprog", "Crash")
	}
	want := "main: recovered done\nnew-thread: recovered done\nsecond-new-thread: recovered done\nmain-again: recovered done\n"
	if output != want {
		t.Fatalf("output:\n%s\n\nwanted:\n%s", output, want)
	}
}

func TestCrashHandler(t *testing.T) {
	testCrashHandler(t, false)
}

func testDeadlock(t *testing.T, name string) {
	// External linking brings in cgo, causing deadlock detection not working.
	testenv.MustInternalLink(t)

output := runTestProg(t, "testprog", name)
	want := "fatal error: all goroutines are asleep - deadlock!\n"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestSimpleDeadlock(t *testing.T) {
	testDeadlock(t, "SimpleDeadlock")
}

func TestInitDeadlock(t *testing.T) {
	testDeadlock(t, "InitDeadlock")
}

func TestLockedDeadlock(t *testing.T) {
	testDeadlock(t, "LockedDeadlock")
}

func TestLockedDeadlock2(t *testing.T) {
	testDeadlock(t, "LockedDeadlock2")
}

func TestGoexitDeadlock(t *testing.T) {
	// External linking brings in cgo, causing deadlock detection not working.
	testenv.MustInternalLink(t)

output := runTestProg(t, "testprog", "GoexitDeadlock")
	want := "no goroutines (main called runtime.Goexit) - deadlock!"
	if !strings.Contains(output, want) {
		t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want)
	}
}

func TestStackOverflow(t *testing.T) {
	output := runTestProg(t, "testprog", "StackOverflow")
	want := []string{
		"runtime: goroutine stack exceeds 1474560-byte limit\n",
		"fatal error: stack overflow",
		// information about the current SP and stack bounds
		"runtime: sp=",
		"stack=[",
	}
	if !strings.HasPrefix(output, want[0]) {
		t.Errorf("output does not start with %q", want[0])
	}
	for _, s := range want[1:] {
		if !strings.Contains(output, s) {
			t.Errorf("output does not contain %q", s)
		}
	}
	if t.Failed() {
		t.Logf("output:\n%s", output)
	}
}

func TestThreadExhaustion(t *testing.T) {
	output := runTestProg(t, "testprog", "ThreadExhaustion")
	want := "runtime: program exceeds 10-thread limit\nfatal error: thread exhaustion"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestRecursivePanic(t *testing.T) {
	output := runTestProg(t, "testprog", "RecursivePanic")
	want := `wrap: bad
panic: again

`
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}

}

func TestRecursivePanic2(t *testing.T) {
	output := runTestProg(t, "testprog", "RecursivePanic2")
	want := `first panic
second panic
panic: third panic

`
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}

}

func TestRecursivePanic3(t *testing.T) {
	output := runTestProg(t, "testprog", "RecursivePanic3")
	want := `panic: first panic

`
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}

}

func TestRecursivePanic4(t *testing.T) {
	output := runTestProg(t, "testprog", "RecursivePanic4")
	want := `panic: first panic [recovered]
	panic: second panic
`
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}

}

func TestRecursivePanic5(t *testing.T) {
	output := runTestProg(t, "testprog", "RecursivePanic5")
	want := `first panic
second panic
panic: third panic
`
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}

}

func TestGoexitCrash(t *testing.T) {
	// External linking brings in cgo, causing deadlock detection not working.
	testenv.MustInternalLink(t)

output := runTestProg(t, "testprog", "GoexitExit")
	want := "no goroutines (main called runtime.Goexit) - deadlock!"
	if !strings.Contains(output, want) {
		t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want)
	}
}

func TestGoexitDefer(t *testing.T) {
	c := make(chan struct{})
	go func() {
		defer func() {
			r := recover()
			if r != nil {
				t.Errorf("non-nil recover during Goexit")
			}
			c <- struct{}{}
		}()
		runtime.Goexit()
	}()
	// Note: if the defer fails to run, we will get a deadlock here
	<-c
}

func TestGoNil(t *testing.T) {
	output := runTestProg(t, "testprog", "GoNil")
	want := "go of nil func value"
	if !strings.Contains(output, want) {
		t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want)
	}
}

func TestMainGoroutineID(t *testing.T) {
	output := runTestProg(t, "testprog", "MainGoroutineID")
	want := "panic: test\n\ngoroutine 1 [running]:\n"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestNoHelperGoroutines(t *testing.T) {
	output := runTestProg(t, "testprog", "NoHelperGoroutines")
	matches := regexp.MustCompile(`goroutine [0-9]+ \[`).FindAllStringSubmatch(output, -1)
	if len(matches) != 1 || matches[0][0] != "goroutine 1 [" {
		t.Fatalf("want to see only goroutine 1, see:\n%s", output)
	}
}

func TestBreakpoint(t *testing.T) {
	output := runTestProg(t, "testprog", "Breakpoint")
	// If runtime.Breakpoint() is inlined, then the stack trace prints
	// "runtime.Breakpoint(...)" instead of "runtime.Breakpoint()".
	want := "runtime.Breakpoint("
	if !strings.Contains(output, want) {
		t.Fatalf("output:\n%s\n\nwant output containing: %s", output, want)
	}
}

func TestGoexitInPanic(t *testing.T) {
	// External linking brings in cgo, causing deadlock detection not working.
	testenv.MustInternalLink(t)

// see issue 8774: this code used to trigger an infinite recursion
	output := runTestProg(t, "testprog", "GoexitInPanic")
	want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

// Issue 14965: Runtime panics should be of type runtime.Error
func TestRuntimePanicWithRuntimeError(t *testing.T) {
	testCases := [...]func(){
		0: func() {
			var m map[uint64]bool
			m[1234] = true
		},
		1: func() {
			ch := make(chan struct{})
			close(ch)
			close(ch)
		},
		2: func() {
			var ch = make(chan struct{})
			close(ch)
			ch <- struct{}{}
		},
		3: func() {
			var s = make([]int, 2)
			_ = s[2]
		},
		4: func() {
			n := -1
			_ = make(chan bool, n)
		},
		5: func() {
			close((chan bool)(nil))
		},
	}

for i, fn := range testCases {
		got := panicValue(fn)
		if _, ok := got.(runtime.Error); !ok {
			t.Errorf("test #%d: recovered value %v(type %T) does not implement runtime.Error", i, got, got)
		}
	}
}

func panicValue(fn func()) (recovered interface{}) {
	defer func() {
		recovered = recover()
	}()
	fn()
	return
}

func TestPanicAfterGoexit(t *testing.T) {
	// an uncaught panic should still work after goexit
	output := runTestProg(t, "testprog", "PanicAfterGoexit")
	want := "panic: hello"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestRecoveredPanicAfterGoexit(t *testing.T) {
	// External linking brings in cgo, causing deadlock detection not working.
	testenv.MustInternalLink(t)

output := runTestProg(t, "testprog", "RecoveredPanicAfterGoexit")
	want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestRecoverBeforePanicAfterGoexit(t *testing.T) {
	// External linking brings in cgo, causing deadlock detection not working.
	testenv.MustInternalLink(t)

t.Parallel()
	output := runTestProg(t, "testprog", "RecoverBeforePanicAfterGoexit")
	want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestRecoverBeforePanicAfterGoexit2(t *testing.T) {
	// External linking brings in cgo, causing deadlock detection not working.
	testenv.MustInternalLink(t)

t.Parallel()
	output := runTestProg(t, "testprog", "RecoverBeforePanicAfterGoexit2")
	want := "fatal error: no goroutines (main called runtime.Goexit) - deadlock!"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestNetpollDeadlock(t *testing.T) {
	t.Parallel()
	output := runTestProg(t, "testprognet", "NetpollDeadlock")
	want := "done\n"
	if !strings.HasSuffix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestPanicTraceback(t *testing.T) {
	t.Parallel()
	output := runTestProg(t, "testprog", "PanicTraceback")
	want := "panic: hello\n\tpanic: panic pt2\n\tpanic: panic pt1\n"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}

// Check functions in the traceback.
	fns := []string{"main.pt1.func1", "panic", "main.pt2.func1", "panic", "main.pt2", "main.pt1"}
	for _, fn := range fns {
		re := regexp.MustCompile(`(?m)^` + regexp.QuoteMeta(fn) + `\(.*\n`)
		idx := re.FindStringIndex(output)
		if idx == nil {
			t.Fatalf("expected %q function in traceback:\n%s", fn, output)
		}
		output = output[idx[1]:]
	}
}

func testPanicDeadlock(t *testing.T, name string, want string) {
	// test issue 14432
	output := runTestProg(t, "testprog", name)
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

func TestPanicDeadlockGosched(t *testing.T) {
	testPanicDeadlock(t, "GoschedInPanic", "panic: errorThatGosched\n\n")
}

func TestPanicDeadlockSyscall(t *testing.T) {
	testPanicDeadlock(t, "SyscallInPanic", "1\n2\npanic: 3\n\n")
}

func TestPanicLoop(t *testing.T) {
	output := runTestProg(t, "testprog", "PanicLoop")
	if want := "panic while printing panic value"; !strings.Contains(output, want) {
		t.Errorf("output does not contain %q:\n%s", want, output)
	}
}

func TestMemPprof(t *testing.T) {
	testenv.MustHaveGoRun(t)

exe, err := buildTestProg(t, "testprog")
	if err != nil {
		t.Fatal(err)
	}

got, err := testenv.CleanCmdEnv(exec.Command(exe, "MemProf")).CombinedOutput()
	if err != nil {
		t.Fatal(err)
	}
	fn := strings.TrimSpace(string(got))
	defer os.Remove(fn)

for try := 0; try < 2; try++ {
		cmd := testenv.CleanCmdEnv(exec.Command(testenv.GoToolPath(t), "tool", "pprof", "-alloc_space", "-top"))
		// Check that pprof works both with and without explicit executable on command line.
		if try == 0 {
			cmd.Args = append(cmd.Args, exe, fn)
		} else {
			cmd.Args = append(cmd.Args, fn)
		}
		found := false
		for i, e := range cmd.Env {
			if strings.HasPrefix(e, "PPROF_TMPDIR=") {
				cmd.Env[i] = "PPROF_TMPDIR=" + os.TempDir()
				found = true
				break
			}
		}
		if !found {
			cmd.Env = append(cmd.Env, "PPROF_TMPDIR="+os.TempDir())
		}

top, err := cmd.CombinedOutput()
		t.Logf("%s:\n%s", cmd.Args, top)
		if err != nil {
			t.Error(err)
		} else if !bytes.Contains(top, []byte("MemProf")) {
			t.Error("missing MemProf in pprof output")
		}
	}
}

var concurrentMapTest = flag.Bool("run_concurrent_map_tests", false, "also run flaky concurrent map tests")

func TestConcurrentMapWrites(t *testing.T) {
	if !*concurrentMapTest {
		t.Skip("skipping without -run_concurrent_map_tests")
	}
	testenv.MustHaveGoRun(t)
	output := runTestProg(t, "testprog", "concurrentMapWrites")
	want := "fatal error: concurrent map writes"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}
func TestConcurrentMapReadWrite(t *testing.T) {
	if !*concurrentMapTest {
		t.Skip("skipping without -run_concurrent_map_tests")
	}
	testenv.MustHaveGoRun(t)
	output := runTestProg(t, "testprog", "concurrentMapReadWrite")
	want := "fatal error: concurrent map read and map write"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}
func TestConcurrentMapIterateWrite(t *testing.T) {
	if !*concurrentMapTest {
		t.Skip("skipping without -run_concurrent_map_tests")
	}
	testenv.MustHaveGoRun(t)
	output := runTestProg(t, "testprog", "concurrentMapIterateWrite")
	want := "fatal error: concurrent map iteration and map write"
	if !strings.HasPrefix(output, want) {
		t.Fatalf("output does not start with %q:\n%s", want, output)
	}
}

type point struct {
	x, y *int
}

func (p *point) negate() {
	*p.x = *p.x * -1
	*p.y = *p.y * -1
}

// Test for issue #10152.
func TestPanicInlined(t *testing.T) {
	defer func() {
		r := recover()
		if r == nil {
			t.Fatalf("recover failed")
		}
		buf := make([]byte, 2048)
		n := runtime.Stack(buf, false)
		buf = buf[:n]
		if !bytes.Contains(buf, []byte("(*point).negate(")) {
			t.Fatalf("expecting stack trace to contain call to (*point).negate()")
		}
	}()

pt := new(point)
	pt.negate()
}

// Test for issues #3934 and #20018.
// We want to delay exiting until a panic print is complete.
func TestPanicRace(t *testing.T) {
	testenv.MustHaveGoRun(t)

exe, err := buildTestProg(t, "testprog")
	if err != nil {
		t.Fatal(err)
	}

// The test is intentionally racy, and in my testing does not
	// produce the expected output about 0.05% of the time.
	// So run the program in a loop and only fail the test if we
	// get the wrong output ten times in a row.
	const tries = 10
retry:
	for i := 0; i < tries; i++ {
		got, err := testenv.CleanCmdEnv(exec.Command(exe, "PanicRace")).CombinedOutput()
		if err == nil {
			t.Logf("try %d: program exited successfully, should have failed", i+1)
			continue
		}

if i > 0 {
			t.Logf("try %d:\n", i+1)
		}
		t.Logf("%s\n", got)

wants := []string{
			"panic: crash",
			"PanicRace",
			"created by ",
		}
		for _, want := range wants {
			if !bytes.Contains(got, []byte(want)) {
				t.Logf("did not find expected string %q", want)
				continue retry
			}
		}

// Test generated expected output.
		return
	}
	t.Errorf("test ran %d times without producing expected output", tries)
}

func TestBadTraceback(t *testing.T) {
	output := runTestProg(t, "testprog", "BadTraceback")
	for _, want := range []string{
		"runtime: unexpected return pc",
		"called from 0xbad",
		"00000bad",    // Smashed LR in hex dump
		"<main.badLR", // Symbolization in hex dump (badLR1 or badLR2)
	} {
		if !strings.Contains(output, want) {
			t.Errorf("output does not contain %q:\n%s", want, output)
		}
	}
}

func TestTimePprof(t *testing.T) {
	// Pass GOTRACEBACK for issue #41120 to try to get more
	// information on timeout.
	fn := runTestProg(t, "testprog", "TimeProf", "GOTRACEBACK=crash")
	fn = strings.TrimSpace(fn)
	defer os.Remove(fn)

cmd := testenv.CleanCmdEnv(exec.Command(testenv.GoToolPath(t), "tool", "pprof", "-top", "-nodecount=1", fn))
	cmd.Env = append(cmd.Env, "PPROF_TMPDIR="+os.TempDir())
	top, err := cmd.CombinedOutput()
	t.Logf("%s", top)
	if err != nil {
		t.Error(err)
	} else if bytes.Contains(top, []byte("ExternalCode")) {
		t.Error("profiler refers to ExternalCode")
	}
}

// Test that runtime.abort does so.
func TestAbort(t *testing.T) {
	// Pass GOTRACEBACK to ensure we get runtime frames.
	output := runTestProg(t, "testprog", "Abort", "GOTRACEBACK=system")
	if want := "runtime.abort"; !strings.Contains(output, want) {
		t.Errorf("output does not contain %q:\n%s", want, output)
	}
	if strings.Contains(output, "BAD") {
		t.Errorf("output contains BAD:\n%s", output)
	}
	// Check that it's a signal traceback.
	want := "PC="
	// For systems that use a breakpoint, check specifically for that.
	switch runtime.GOARCH {
	case "386", "amd64":
		switch runtime.GOOS {
		case "plan9":
			want = "sys: breakpoint"
		case "windows":
			want = "Exception 0x80000003"
		default:
			want = "SIGTRAP"
		}
	}
	if !strings.Contains(output, want) {
		t.Errorf("output does not contain %q:\n%s", want, output)
	}
}

// For TestRuntimePanic: test a panic in the runtime package without
// involving the testing harness.
func init() {
	if os.Getenv("GO_TEST_RUNTIME_PANIC") == "1" {
		defer func() {
			if r := recover(); r != nil {
				// We expect to crash, so exit 0
				// to indicate failure.
				os.Exit(0)
			}
		}()
		runtime.PanicForTesting(nil, 1)
		// We expect to crash, so exit 0 to indicate failure.
		os.Exit(0)
	}
}

func TestRuntimePanic(t *testing.T) {
	testenv.MustHaveExec(t)
	cmd := testenv.CleanCmdEnv(exec.Command(os.Args[0], "-test.run=TestRuntimePanic"))
	cmd.Env = append(cmd.Env, "GO_TEST_RUNTIME_PANIC=1")
	out, err := cmd.CombinedOutput()
	t.Logf("%s", out)
	if err == nil {
		t.Error("child process did not fail")
	} else if want := "runtime.unexportedPanicForTesting"; !bytes.Contains(out, []byte(want)) {
		t.Errorf("output did not contain expected string %q", want)
	}
}

// Test that g0 stack overflows are handled gracefully.
func TestG0StackOverflow(t *testing.T) {
	testenv.MustHaveExec(t)

switch runtime.GOOS {
	case "darwin", "dragonfly", "freebsd", "linux", "netbsd", "openbsd", "android":
		t.Skipf("g0 stack is wrong on pthread platforms (see golang.org/issue/26061)")
	}

if os.Getenv("TEST_G0_STACK_OVERFLOW") != "1" {
		cmd := testenv.CleanCmdEnv(exec.Command(os.Args[0], "-test.run=TestG0StackOverflow", "-test.v"))
		cmd.Env = append(cmd.Env, "TEST_G0_STACK_OVERFLOW=1")
		out, err := cmd.CombinedOutput()
		// Don't check err since it's expected to crash.
		if n := strings.Count(string(out), "morestack on g0\n"); n != 1 {
			t.Fatalf("%s\n(exit status %v)", out, err)
		}
		// Check that it's a signal-style traceback.
		if runtime.GOOS != "windows" {
			if want := "PC="; !strings.Contains(string(out), want) {
				t.Errorf("output does not contain %q:\n%s", want, out)
			}
		}
		return
	}

runtime.G0StackOverflow()
}

// Test that panic message is not clobbered.
// See issue 30150.
func TestDoublePanic(t *testing.T) {
	output := runTestProg(t, "testprog", "DoublePanic", "GODEBUG=clobberfree=1")
	wants := []string{"panic: XXX", "panic: YYY"}
	for _, want := range wants {
		if !strings.Contains(output, want) {
			t.Errorf("output:\n%s\n\nwant output containing: %s", output, want)
		}
	}
}

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