[Bug sanitizer/79944] asan: incorrect instrumentation of atomic operations

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79944

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Mar  9 09:20:23 2017
New Revision: 245991

URL: https://gcc.gnu.org/viewcvs?rev=245991&root=gcc&view=rev
Log:
        PR sanitizer/79944
        * asan.c (get_mem_refs_of_builtin_call): For BUILT_IN_ATOMIC* and
        BUILT_IN_SYNC*, determine the access type from the size suffix and
        always build a MEM_REF with that type.  Handle forgotten
        BUILT_IN_SYNC_FETCH_AND_NAND_16 and BUILT_IN_SYNC_NAND_AND_FETCH_16.

        * c-c++-common/asan/pr79944.c: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/asan/pr79944.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/asan.c
    trunk/gcc/testsuite/ChangeLog