When LLVM is embedded in a larger application, it's not OK for LLVM to intercept crashes. LLVM already has

the ability to disable this functionality.  This patch exposes it via the C API.

llvm-svn: 193937

llvm/include/llvm-c/Core.h

@@ -433,6 +433,12 @@ void LLVMInstallFatalErrorHandler(LLVMFatalErrorHandler Handler);
  */
 void LLVMResetFatalErrorHandler(void);
 
+/**
+ * Disable LLVM's built-in stack trace code. This must be called before any
+ * other LLVM APIs; otherwise the results are undefined.
+ */
+void LLVMDisablePrettyStackTrace(void);
+
 /**
  * @defgroup LLVMCCoreContext Contexts
  *

llvm/lib/Support/PrettyStackTrace.cpp

@@ -20,6 +20,7 @@
 #include "llvm/Support/ThreadLocal.h"
 #include "llvm/Support/Watchdog.h"
 #include "llvm/Support/raw_ostream.h"
+#include "llvm-c/Core.h"
 
 #ifdef HAVE_CRASHREPORTERCLIENT_H
 #include <CrashReporterClient.h>
@@ -147,3 +148,7 @@ void PrettyStackTraceProgram::print(raw_ostream &OS) const {
     OS << ArgV[i] << ' ';
   OS << '\n';
 }
+
+void LLVMDisablePrettyStackTrace() {
+  DisablePrettyStackTrace = true;
+}