Move to the libc++ demangler.
Bug: 136138882
Test: Unit tests pass.
Test: Did a kill -3 on a zygote process to verify art demangles properly.
Change-Id: Iaf4fab191e84871be906b39cc32dd7c97c5d385a
diff --git a/libbacktrace/Backtrace.cpp b/libbacktrace/Backtrace.cpp
index 71980d7..3e050ab 100644
--- a/libbacktrace/Backtrace.cpp
+++ b/libbacktrace/Backtrace.cpp
@@ -28,13 +28,13 @@
#include <backtrace/Backtrace.h>
#include <backtrace/BacktraceMap.h>
-#include <demangle.h>
-
#include "BacktraceLog.h"
#include "UnwindStack.h"
using android::base::StringPrintf;
+extern "C" char* __cxa_demangle(const char*, char*, size_t*, int*);
+
//-------------------------------------------------------------------------
// Backtrace functions.
//-------------------------------------------------------------------------
@@ -63,7 +63,14 @@
if (map->start == 0 || (map->flags & PROT_DEVICE_MAP)) {
return "";
}
- return demangle(GetFunctionNameRaw(pc, offset).c_str());
+ std::string name(GetFunctionNameRaw(pc, offset));
+ char* demangled_name = __cxa_demangle(name.c_str(), nullptr, nullptr, nullptr);
+ if (demangled_name != nullptr) {
+ name = demangled_name;
+ free(demangled_name);
+ return name;
+ }
+ return name;
}
bool Backtrace::VerifyReadWordArgs(uint64_t ptr, word_t* out_value) {