[𝘀𝗽𝗿] initial versionusers/vitalybuka/spr/update

Created using spr 1.3.4

1 files changed, 8 insertions, 1 deletions

diff --git a/clang/docs/MemorySanitizer.rst b/clang/docs/MemorySanitizer.rst
index bcc6cc808e8b..118177840add 100644
--- a/clang/docs/MemorySanitizer.rst
+++ b/clang/docs/MemorySanitizer.rst
@@ -8,11 +8,18 @@ MemorySanitizer
 Introduction
 ============
 
-MemorySanitizer is a detector of uninitialized reads. It consists of a
+MemorySanitizer is a detector of uninitialized memory use. It consists of a
 compiler instrumentation module and a run-time library.
 
 Typical slowdown introduced by MemorySanitizer is **3x**.
 
+Here is a not comprehensive list cases when MemorySanitizer will report an error:
+
+* A code uses uninitialized value in a conditional branch.
+* Uninitialized pointer was used for memory accesses.
+* Uninitialized value passed or returned from a function call, when it considered an undefined behavior. The check can be disabled with ``-fno-sanitize-memory-param-retval``.
+* Uninitialized data was passed into some libc calls.
+
 How to build
 ============