[ASan] Change __asan_set_on_error_callback to weak overridable __asan_on_error, so that ASan would call the latter even if it finds the error early (i.e. during module initialization)

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@165008 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 6 deletions

diff --git a/include/sanitizer/asan_interface.h b/include/sanitizer/asan_interface.h
index 787e8116c..788e90f4c 100644
--- a/include/sanitizer/asan_interface.h
+++ b/include/sanitizer/asan_interface.h
@@ -128,12 +128,11 @@ extern "C" {
   void __asan_set_error_report_callback(void (*callback)(const char*))
       SANITIZER_INTERFACE_ATTRIBUTE;
 
-  // Sets the callback to be called right when ASan detects an error.
-  // This can be used to notice cases when ASan detects an error, but the
-  // program crashes before ASan report is printed.
-  // Passing 0 unsets the callback.
-  void __asan_set_on_error_callback(void (*callback)(void))
-      SANITIZER_INTERFACE_ATTRIBUTE;
+  // User may provide function that would be called right when ASan detects
+  // an error. This can be used to notice cases when ASan detects an error, but
+  // the program crashes before ASan report is printed.
+  void __asan_on_error()
+      SANITIZER_WEAK_ATTRIBUTE SANITIZER_INTERFACE_ATTRIBUTE;
 
   // User may provide its own implementation for symbolization function.
   // It should print the description of instruction at address "pc" to