Merge new upstream LTS 20210324.0

1 files changed, 21 insertions, 1 deletions

diff --git a/absl/debugging/leak_check.h b/absl/debugging/leak_check.h
index 7a5a22dd..5fc2b052 100644
--- a/absl/debugging/leak_check.h
+++ b/absl/debugging/leak_check.h
@@ -43,6 +43,12 @@ ABSL_NAMESPACE_BEGIN
 // currently built into this target.
 bool HaveLeakSanitizer();
 
+// LeakCheckerIsActive()
+//
+// Returns true if a leak-checking sanitizer (either ASan or standalone LSan) is
+// currently built into this target and is turned on.
+bool LeakCheckerIsActive();
+
 // DoIgnoreLeak()
 //
 // Implements `IgnoreLeak()` below. This function should usually
@@ -62,7 +68,8 @@ void DoIgnoreLeak(const void* ptr);
 //
 // If the passed `ptr` does not point to an actively allocated object at the
 // time `IgnoreLeak()` is called, the call is a no-op; if it is actively
-// allocated, the object must not get deallocated later.
+// allocated, leak sanitizer will assume this object is referenced even if
+// there is no actual reference in user memory.
 //
 template <typename T>
 T* IgnoreLeak(T* ptr) {
@@ -70,6 +77,19 @@ T* IgnoreLeak(T* ptr) {
   return ptr;
 }
 
+// FindAndReportLeaks()
+//
+// If any leaks are detected, prints a leak report and returns true.  This
+// function may be called repeatedly, and does not affect end-of-process leak
+// checking.
+//
+// Example:
+// if (FindAndReportLeaks()) {
+//   ... diagnostic already printed. Exit with failure code.
+//   exit(1)
+// }
+bool FindAndReportLeaks();
+
 // LeakCheckDisabler
 //
 // This helper class indicates that any heap allocations done in the code block