cmd/go: document that -msan requires clang

Fixes #14171.

Change-Id: Ie75c1cfd88801618308d472bc04e7fc648c95e0c
Reviewed-on: https://go-review.googlesource.com/19150
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

diff --git a/src/cmd/go/alldocs.go b/src/cmd/go/alldocs.go
index 5db4bc6beca4d4d9a31791a26a96e5fa112719e9..c81bd40864a3c74bc36a8f40f00893bc9dd9b74b 100644 (file)
--- a/src/cmd/go/alldocs.go
+++ b/src/cmd/go/alldocs.go
@@ -93,7 +93,8 @@ and test commands:
                Supported only on linux/amd64, freebsd/amd64, darwin/amd64 and windows/amd64.
        -msan
                enable interoperation with memory sanitizer.
-               Supported only on linux/amd64.
+               Supported only on linux/amd64,
+               and only with Clang/LLVM as the host C compiler.
        -v
                print the names of packages as they are compiled.
        -work

diff --git a/src/cmd/go/build.go b/src/cmd/go/build.go
index 12867004aadda7632d4f40271463656d80183e4a..a1f925ed0ba2d7b8c26410150a78bd299c56edb8 100644 (file)
--- a/src/cmd/go/build.go
+++ b/src/cmd/go/build.go
@@ -72,7 +72,8 @@ and test commands:
                Supported only on linux/amd64, freebsd/amd64, darwin/amd64 and windows/amd64.
        -msan
                enable interoperation with memory sanitizer.
-               Supported only on linux/amd64.
+               Supported only on linux/amd64,
+               and only with Clang/LLVM as the host C compiler.
        -v
                print the names of packages as they are compiled.
        -work