diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
--- a/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp
@@ -44,7 +44,6 @@
 #define SANITIZER_OS_TRACE 0
 #endif
 
-// import new crash reporting api
 #if defined(__has_include) && __has_include(<CrashReporterClient.h>)
 #define HAVE_CRASHREPORTERCLIENT_H 1
 #include <CrashReporterClient.h>
@@ -787,12 +786,10 @@
 #endif
 }
 
-// buffer to store crash report application information
 static char crashreporter_info_buff[__sanitizer::kErrorMessageBufferSize] = {};
 static BlockingMutex crashreporter_info_mutex(LINKER_INITIALIZED);
 
 extern "C" {
-// Integrate with crash reporter libraries.
 #if HAVE_CRASHREPORTERCLIENT_H
 CRASH_REPORTER_CLIENT_HIDDEN
 struct crashreporter_annotations_t gCRAnnotations
@@ -810,7 +807,6 @@
 };
 
 #else
-// fall back to old crashreporter api
 static const char *__crashreporter_info__ __attribute__((__used__)) =
     &crashreporter_info_buff[0];
 asm(".desc ___crashreporter_info__, 0x10");