Improve logging of aborts for Android.

In Android, stderr only goes to the console, and as such will only ever
be seen by adb shell users. Since very few developers will ever actually
see that, also send the abort message to logcat and the tombstone.

llvm-svn: 215983

1 files changed, 21 insertions, 2 deletions

diff --git a/libcxxabi/src/abort_message.cpp b/libcxxabi/src/abort_message.cpp
index 3da4ef67002..3158ada4982 100644
--- a/libcxxabi/src/abort_message.cpp
+++ b/libcxxabi/src/abort_message.cpp
@@ -12,9 +12,14 @@
 #include <stdarg.h>
 #include "abort_message.h"
 
+#ifdef __BIONIC__
+#include <android/set_abort_message.h>
+#include <syslog.h>
+#endif
+
 #pragma GCC visibility push(hidden)
 
-#if __APPLE__ 
+#if __APPLE__
 #   if defined(__has_include) && __has_include(<CrashReporterClient.h>)
 #       define HAVE_CRASHREPORTERCLIENT_H 1
 #       include <CrashReporterClient.h>
@@ -33,7 +38,7 @@ void abort_message(const char* format, ...)
     vfprintf(stderr, format, list);
     va_end(list);
     fprintf(stderr, "\n");
-    
+
 #if __APPLE__ && HAVE_CRASHREPORTERCLIENT_H
     // record message in crash report
     char* buffer;
@@ -42,6 +47,20 @@ void abort_message(const char* format, ...)
     vasprintf(&buffer, format, list2);
     va_end(list2);
     CRSetCrashLogMessage(buffer);
+#elif __BIONIC__
+    char* buffer;
+    va_list list2;
+    va_start(list2, format);
+    vasprintf(&buffer, format, list2);
+    va_end(list2);
+
+    // Show error in tombstone.
+    android_set_abort_message(buffer);
+
+    // Show error in logcat.
+    openlog("libc++abi", 0, 0);
+    syslog(LOG_CRIT, "%s", buffer);
+    closelog();
 #endif
 
     abort();