[Bug middle-end/51644] [4.7 Regression] va_list vs. warning: ‘noreturn’ function does return is not fixable

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51644

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-12-21 
14:51:38 UTC ---
Author: jakub
Date: Wed Dec 21 14:51:19 2011
New Revision: 182589

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182589
Log:
    PR middle-end/51644
    PR middle-end/51647
    * tree-eh.c (decide_copy_try_finally): At -O0, return true
    even when ndests is not 1, if there are only gimple_clobber_p
    (or debug) stmts in the finally sequence.
    * tree-inline.c (estimate_num_insns): Return 0 for gimple_clobber_p
    stmts.

    * gcc.dg/pr51644.c: New test.
    * g++.dg/warn/Wreturn-4.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Wreturn-4.C
    trunk/gcc/testsuite/gcc.dg/pr51644.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-eh.c
    trunk/gcc/tree-inline.c