From: Cherry Mui <cherryyz@google.com>
Date: Fri, 12 Sep 2025 17:46:31 +0000 (-0400)
Subject: cmd/link: support race mode with MSVC clang
X-Git-Tag: go1.26rc1~876
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=e603e9834e83ec67f0dd39c4e77683eef0593946;p=gostls13.git

cmd/link: support race mode with MSVC clang

I couldn't make --print-file-name work with -msvc clang. (The
library name is synchronization.lib, but even with that name it
still doesn't print the full path.) Assume it always
synchronization.lib.

Change-Id: I22e8f14824f7f7e96b71b913217b1f604f1e2da7
Reviewed-on: https://go-review.googlesource.com/c/go/+/703398
Reviewed-by: Than McIntosh <thanm@golang.org>
Reviewed-by: Florian Zenker <floriank@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
---

diff --git a/src/cmd/link/internal/ld/lib.go b/src/cmd/link/internal/ld/lib.go
index 516150a0a7..1a1bc18675 100644
--- a/src/cmd/link/internal/ld/lib.go
+++ b/src/cmd/link/internal/ld/lib.go
@@ -1943,7 +1943,11 @@ func (ctxt *Link) hostlink() {
 			argv = append(argv, "-Wl,-T,"+p)
 		}
 		if *flagRace {
-			if p := ctxt.findLibPath("libsynchronization.a"); p != "libsynchronization.a" {
+			// Apparently --print-file-name doesn't work with -msvc clang.
+			// (The library name is synchronization.lib, but even with that
+			// name it still doesn't print the full path.) Assume it always
+			// it.
+			if isMSVC || ctxt.findLibPath("libsynchronization.a") != "libsynchronization.a" {
 				argv = append(argv, "-lsynchronization")
 			}
 		}