diff options
Diffstat (limited to 'src/cmd/link/internal/ld/outbuf_darwin.go')
| -rw-r--r-- | src/cmd/link/internal/ld/outbuf_darwin.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/cmd/link/internal/ld/outbuf_darwin.go b/src/cmd/link/internal/ld/outbuf_darwin.go index d7e3372230..9444b6567e 100644 --- a/src/cmd/link/internal/ld/outbuf_darwin.go +++ b/src/cmd/link/internal/ld/outbuf_darwin.go @@ -36,3 +36,12 @@ func (out *OutBuf) fallocate(size uint64) error { return nil } + +func (out *OutBuf) purgeSignatureCache() { + // Apparently, the Darwin kernel may cache the code signature at mmap. + // When we mmap the output buffer, it doesn't have a code signature + // (as we haven't generated one). Invalidate the kernel cache now that + // we have generated the signature. See issue #42684. + syscall.Syscall(syscall.SYS_MSYNC, uintptr(unsafe.Pointer(&out.buf[0])), uintptr(len(out.buf)), syscall.MS_INVALIDATE) + // Best effort. Ignore error. +} |