[Bug sanitizer/81275] [6/7/8 Regression] -fsanitize=thread produce incorrect -Wreturn-type warning

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81275

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Nov 28 21:22:52 2017
New Revision: 255217

URL: https://gcc.gnu.org/viewcvs?rev=255217&root=gcc&view=rev
Log:
        PR sanitizer/81275
        * tree.c (block_may_fallthru): Return false if SWITCH_ALL_CASES_P
        is set on SWITCH_EXPR and !block_may_fallthru (SWITCH_BODY ()).
c/
        * c-typeck.c (c_finish_case): Set SWITCH_ALL_CASES_P if
        c_switch_covers_all_cases_p returns true.
c-family/
        * c-common.c (c_switch_covers_all_cases_p_1,
        c_switch_covers_all_cases_p): New functions.
        * c-common.h (c_switch_covers_all_cases_p): Declare.
testsuite/
        * c-c++-common/tsan/pr81275.c: New test.

Added:
    trunk/gcc/testsuite/c-c++-common/tsan/pr81275.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c-common.c
    trunk/gcc/c-family/c-common.h
    trunk/gcc/c/ChangeLog
    trunk/gcc/c/c-typeck.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree.c
    trunk/gcc/tree.h