add abort_message() utility function

llvm-svn: 136669

libcxxabi/src/abort_message.c

@@ -0,0 +1,48 @@
+//===-------------------------- abort_message.c ---------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#if __APPLE__ 
+    #include <Availability.h>
+    #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
+        #include <CrashReporterClient.h>
+    #endif
+#endif
+
+#include "abort_message.h"
+
+__attribute__((visibility("hidden")))
+void abort_message(const char* format, ...)
+{
+	// write message to stderr
+#if __APPLE__
+	fprintf(stderr, "libc++abi.dylib: ");
+#endif
+	va_list	list;
+	va_start(list, format);
+	vfprintf(stderr, format, list);
+	va_end(list);
+	fprintf(stderr, "\n");
+	
+#if __APPLE__ && (__MAC_OS_X_VERSION_MIN_REQUIRED >= 1070)
+	// record message in crash report
+	char* buffer;
+	va_list	list2;
+	va_start(list2, format);
+	vasprintf(&buffer, format, list2);
+	va_end(list2);
+	CRSetCrashLogMessage(buffer);
+#endif
+
+	abort();
+}
+

libcxxabi/src/abort_message.h

@@ -0,0 +1,27 @@
+//===-------------------------- abort_message.h-----------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __ABORT_MESSAGE_H_
+#define __ABORT_MESSAGE_H_
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+extern void abort_message(const char* format, ...) 
+            __attribute__((noreturn, format(printf, 1, 2)));
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif
+