From: Mitch Phillips <31459023+hctim@users.noreply.github.com>
Date: Mon, 12 Dec 2022 21:53:08 +0000 (-0800)
Subject: [GWP-ASan] Fix sanitizer backtrace util using wrong print.
X-Git-Tag: upstream/17.0.6~24155
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f529a9f324a8eb4a0f2c5e662b6c57a6a775d62f;p=platform%2Fupstream%2Fllvm.git

[GWP-ASan] Fix sanitizer backtrace util using wrong print.

The sanitizer backtrace is used in tests, and calling StackTrace.Print()
means that it uses the sanitizer's Printf(), rather than GWP-ASan's
Printf(). In the current code, GWP-ASan's Printf() *is* the sanitizer
print, but this isn't guaranteed to be the case, and will change in an
upcoming patch.

Reviewed By: eugenis

Differential Revision: https://reviews.llvm.org/D139748
---

diff --git a/compiler-rt/lib/gwp_asan/optional/backtrace_sanitizer_common.cpp b/compiler-rt/lib/gwp_asan/optional/backtrace_sanitizer_common.cpp
index e6cce86..f8b9cbd 100644
--- a/compiler-rt/lib/gwp_asan/optional/backtrace_sanitizer_common.cpp
+++ b/compiler-rt/lib/gwp_asan/optional/backtrace_sanitizer_common.cpp
@@ -72,7 +72,9 @@ static void PrintBacktrace(uintptr_t *Trace, size_t TraceLength,
     return;
   }
 
-  StackTrace.Print();
+  __sanitizer::InternalScopedString buffer;
+  StackTrace.PrintTo(&buffer);
+  Printf("%s\n", buffer.data());
 }
 } // anonymous namespace