runtime/cgo: make compatible with race detector
Some routines run without and m or g and cannot invoke the
race detector runtime. They must be opaque to the runtime.
That used to be true because they were written in C.
Now that they are written in Go, disable the race detector
annotations for those functions explicitly.
Add test.
Fixes #10874.
Change-Id: Ia8cc28d51e7051528f9f9594b75634e6bb66a785
Reviewed-on: https://go-review.googlesource.com/12534
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/src/cmd/compile/internal/gc/syntax.go b/src/cmd/compile/internal/gc/syntax.go
index ace6914..7f03a4e 100644
--- a/src/cmd/compile/internal/gc/syntax.go
+++ b/src/cmd/compile/internal/gc/syntax.go
@@ -169,6 +169,7 @@
Endlineno int32
+ Norace bool // func must not have race detector annotations
Nosplit bool // func should not execute on separate stack
Nowritebarrier bool // emit compiler error instead of write barrier
Dupok bool // duplicate definitions ok
