add abort_message() utility function
git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@136669 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/src/abort_message.c b/src/abort_message.c
new file mode 100644
index 0000000..717f6a5
--- /dev/null
+++ b/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();
+}
+
diff --git a/src/abort_message.h b/src/abort_message.h
new file mode 100644
index 0000000..b3fa925
--- /dev/null
+++ b/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
+