[compiler-rt] [sanitizer] Handle Gentoo's libstdc++ path (PR #79264)

[Sam James via llvm-commits]

https://github.com/thesamesam updated https://github.com/llvm/llvm-project/pull/79264

>From dcbcf3a4bac7652e4d96cfa967a4a25f6b4f5a40 Mon Sep 17 00:00:00 2001
From: Sam James <sam at gentoo.org>
Date: Wed, 24 Jan 2024 08:23:03 +0000
Subject: [PATCH] [sanitizer] Handle Gentoo's libstdc++ path

On Gentoo, libc++ is indeed in /usr/include/c++/*, but libstdc++ is at
e.g. /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14.

Use '/include/g++' as it should be unique enough. Note that the omission of
a trailing slash is intentional to match g++-*.

See https://github.com/llvm/llvm-project/pull/78534#issuecomment-1904145839.
---
 .../lib/sanitizer_common/sanitizer_symbolizer_report.cpp      | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_report.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_report.cpp
index 8438e019591b58a..f6b157c07c6557c 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_report.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_symbolizer_report.cpp
@@ -34,8 +34,10 @@ static bool FrameIsInternal(const SymbolizedStack *frame) {
     return true;
   const char *file = frame->info.file;
   const char *module = frame->info.module;
+  // On Gentoo, the path is g++-*, so there's *not* a missing /.
   if (file && (internal_strstr(file, "/compiler-rt/lib/") ||
-               internal_strstr(file, "/include/c++/")))
+               internal_strstr(file, "/include/c++/") ||
+               internal_strstr(file, "/include/g++")))
     return true;
   if (module && (internal_strstr(module, "libclang_rt.")))
     return true;