https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113143
--- Comment #6 from Alexander von Gluck <kallisti5 at unixzen dot com> ---
For added clairity. Searching the upstream go sources:
```
grep -R getcontext
src/cmd/vendor/golang.org/x/sys/unix/syscall_netbsd.go:// getcontext
src/cmd/vendor/golang.org/x/sys/unix/zsysnum_freebsd_386.go: SYS_GETCONTEXT
= 421 // { int getcontext(struct __ucontext *ucp); }
src/cmd/vendor/golang.org/x/sys/unix/zsysnum_freebsd_amd64.go: SYS_GETCONTEXT
= 421 // { int getcontext(struct __ucontext *ucp); }
src/cmd/vendor/golang.org/x/sys/unix/zsysnum_freebsd_arm.go: SYS_GETCONTEXT
= 421 // { int getcontext(struct __ucontext *ucp); }
src/cmd/vendor/golang.org/x/sys/unix/zsysnum_freebsd_arm64.go: SYS_GETCONTEXT
= 421 // { int getcontext(struct __ucontext *ucp); }
src/cmd/vendor/golang.org/x/sys/unix/zsysnum_netbsd_386.go: SYS_GETCONTEXT
= 307 // { int|sys||getcontext(struct __ucontext *ucp); }
src/cmd/vendor/golang.org/x/sys/unix/zsysnum_netbsd_amd64.go: SYS_GETCONTEXT
= 307 // { int|sys||getcontext(struct __ucontext *ucp); }
src/cmd/vendor/golang.org/x/sys/unix/zsysnum_netbsd_arm.go: SYS_GETCONTEXT
= 307 // { int|sys||getcontext(struct __ucontext *ucp); }
src/cmd/vendor/golang.org/x/sys/unix/zsysnum_netbsd_arm64.go: SYS_GETCONTEXT
= 307 // { int|sys||getcontext(struct __ucontext *ucp); }
src/runtime/cgo/gcc_solaris_amd64.c: if (getcontext(&ctx) != 0)
src/runtime/cgo/gcc_solaris_amd64.c: perror("runtime/cgo: getcontext
failed");
src/runtime/os3_solaris.go://go:cgo_import_dynamic libc_getcontext getcontext
"libc.so"
src/runtime/os3_solaris.go://go:linkname libc_getcontext libc_getcontext
src/runtime/os3_solaris.go: libc_getcontext,
src/runtime/os3_solaris.go:func getcontext(context *ucontext) /* int32 */ {
src/runtime/os3_solaris.go: sysvicall1(&libc_getcontext,
uintptr(unsafe.Pointer(context)))
src/runtime/os_netbsd.go:func getcontext(ctxt unsafe.Pointer)
src/runtime/os_netbsd.go: getcontext(unsafe.Pointer(&uc))
src/runtime/sys_netbsd_386.s:#define SYS_getcontext 307
src/runtime/sys_netbsd_386.s:TEXT runtime·getcontext(SB),NOSPLIT,$-4
src/runtime/sys_netbsd_386.s: MOVL $SYS_getcontext, AX
src/runtime/sys_netbsd_amd64.s:#define SYS_getcontext 307
src/runtime/sys_netbsd_amd64.s:TEXT runtime·getcontext(SB),NOSPLIT,$-8
src/runtime/sys_netbsd_amd64.s: MOVL $SYS_getcontext, AX
src/runtime/sys_netbsd_arm.s:#define SYS_getcontext
SWI_OS_NETBSD | 307
src/runtime/sys_netbsd_arm.s:TEXT runtime·getcontext(SB),NOSPLIT|NOFRAME,$0
src/runtime/sys_netbsd_arm.s: SWI $SYS_getcontext
src/runtime/sys_netbsd_arm64.s:#define SYS_getcontext 307
src/runtime/sys_netbsd_arm64.s:TEXT runtime·getcontext(SB),NOSPLIT,$-8
src/runtime/sys_netbsd_arm64.s: SVC $SYS_getcontext
src/syscall/zsysnum_freebsd_386.go: SYS_GETCONTEXT = 421 // {
int getcontext(struct __ucontext *ucp); }
src/syscall/zsysnum_freebsd_amd64.go: SYS_GETCONTEXT = 421 // {
int getcontext(struct __ucontext *ucp); }
src/syscall/zsysnum_freebsd_arm.go: SYS_GETCONTEXT = 421 // {
int getcontext(struct __ucontext *ucp); }
src/syscall/zsysnum_freebsd_arm64.go: SYS_GETCONTEXT = 421 // {
int getcontext(struct __ucontext *ucp); }
src/syscall/zsysnum_netbsd_386.go: SYS_GETCONTEXT = 307 // {
int|sys||getcontext(struct __ucontext *ucp); }
src/syscall/zsysnum_netbsd_amd64.go: SYS_GETCONTEXT = 307 // {
int|sys||getcontext(struct __ucontext *ucp); }
src/syscall/zsysnum_netbsd_arm.go: SYS_GETCONTEXT = 307 // {
int|sys||getcontext(struct __ucontext *ucp); }
src/syscall/zsysnum_netbsd_arm64.go: SYS_GETCONTEXT = 307 // {
int|sys||getcontext(struct __ucontext *ucp); }
```
Those all appear to be BSD-specific references, unless i'm missing an
invocation of (get|set|swap)context somewhere?
