diff options
| author | Ian Lance Taylor <iant@golang.org> | 2016-01-05 14:06:58 -0800 |
|---|---|---|
| committer | Ian Lance Taylor <iant@golang.org> | 2016-01-06 04:04:42 +0000 |
| commit | 934e055f414839a9af59601aebacfeeef2b52740 (patch) | |
| tree | 9b0580829773516ea966243caeebc2832ef4bb55 /src/runtime/proc.go | |
| parent | 17ce03725cc549fc24e8972780d18ffd673f6b6c (diff) | |
| download | go-934e055f414839a9af59601aebacfeeef2b52740.tar.xz | |
runtime: call msanwrite on object passed to runtime/cgo
Avoids an msan error when runtime/cgo is explicitly rebuilt with
-fsanitize=memory.
Fixes #13815.
Change-Id: I70308034011fb308b63585bcd40b0d1e62ec93ef
Reviewed-on: https://go-review.googlesource.com/18263
Reviewed-by: Russ Cox <rsc@golang.org>
Diffstat (limited to 'src/runtime/proc.go')
| -rw-r--r-- | src/runtime/proc.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/runtime/proc.go b/src/runtime/proc.go index 3fa21d8e6f..12fba1404c 100644 --- a/src/runtime/proc.go +++ b/src/runtime/proc.go @@ -1489,6 +1489,9 @@ func newm(fn func(), _p_ *p) { ts.g.set(mp.g0) ts.tls = (*uint64)(unsafe.Pointer(&mp.tls[0])) ts.fn = unsafe.Pointer(funcPC(mstart)) + if msanenabled { + msanwrite(unsafe.Pointer(&ts), unsafe.Sizeof(ts)) + } asmcgocall(_cgo_thread_start, unsafe.Pointer(&ts)) return } |