[compiler-rt] f529a9f - [GWP-ASan] Fix sanitizer backtrace util using wrong print.

[Mitch Phillips via llvm-commits]

Author: Mitch Phillips
Date: 2022-12-12T13:53:11-08:00
New Revision: f529a9f324a8eb4a0f2c5e662b6c57a6a775d62f

URL: https://github.com/llvm/llvm-project/commit/f529a9f324a8eb4a0f2c5e662b6c57a6a775d62f
DIFF: https://github.com/llvm/llvm-project/commit/f529a9f324a8eb4a0f2c5e662b6c57a6a775d62f.diff

LOG: [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

Added: 
    

Modified: 
    compiler-rt/lib/gwp_asan/optional/backtrace_sanitizer_common.cpp

Removed: 
    


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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 e6cce86e3b7bc..f8b9cbdb79350 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