From: Ian Lance Taylor <iant@golang.org>
Date: Thu, 5 Feb 2026 04:58:51 +0000 (-0800)
Subject: cmd/link: ignore GCC generated .wm4/.wm8 symbols with no type
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=5f51b092846ae43d03092d866449d9933a8bf42b;p=gostls13.git

cmd/link: ignore GCC generated .wm4/.wm8 symbols with no type

Fixes #77436

Change-Id: I37d852a89678c929156c4765e774c819eb515e6f
Reviewed-on: https://go-review.googlesource.com/c/go/+/742220
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
---

diff --git a/src/cmd/go/testdata/script/cgo_g3.txt b/src/cmd/go/testdata/script/cgo_g3.txt
new file mode 100644
index 0000000000..ada9a8c691
--- /dev/null
+++ b/src/cmd/go/testdata/script/cgo_g3.txt
@@ -0,0 +1,18 @@
+[!cgo] skip
+
+# Test that -g3 works with cgo.
+env CGO_CFLAGS=-g3
+go build
+
+-- go.mod --
+module cgog3
+
+go 1.25
+-- m.go --
+package main
+
+import "os/user"
+
+func main() {
+	user.Current()
+}
diff --git a/src/cmd/link/internal/loadelf/ldelf.go b/src/cmd/link/internal/loadelf/ldelf.go
index 239d4c169d..c5c4645656 100644
--- a/src/cmd/link/internal/loadelf/ldelf.go
+++ b/src/cmd/link/internal/loadelf/ldelf.go
@@ -615,6 +615,14 @@ func Load(l *loader.Loader, arch *sys.Arch, localSymVersion int, f *bio.Reader,
 					// Symbols generated by the relax feature of gcc and binutils on loong64.
 					continue
 				}
+
+				if strings.HasPrefix(elfsym.name, "wm4.") || strings.HasPrefix(elfsym.name, "wm8.") {
+					// Symbols generated by GCC as
+					// group symbols to eliminate
+					// duplicate debug info for
+					// preprocessor symbols.
+					continue
+				}
 			}
 
 			if strings.HasPrefix(elfsym.name, ".Linfo_string") {