[Bug tree-optimization/83603] [8 Regression] ICE in builtin_memref at gcc/gimple-ssa-warn-restrict.c:238

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83603

--- Comment #7 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Wed Jan  3 22:52:53 2018
New Revision: 256217

URL: https://gcc.gnu.org/viewcvs?rev=256217&root=gcc&view=rev
Log:
PR tree-optimization/83603 - ICE in builtin_memref at
gcc/gimple-ssa-warn-restrict.c:238

gcc/ChangeLog:

        PR tree-optimization/83603
        * calls.c (maybe_warn_nonstring_arg): Avoid accessing function
        arguments past the endof the argument list in functions declared
        without a prototype.
        * gimple-ssa-warn-restrict.c (wrestrict_dom_walker::check_call):
        Avoid checking when arguments are null.

gcc/testsuite/ChangeLog:

        PR tree-optimization/83603
        * gcc.dg/Wrestrict-4.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/Wrestrict-4.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/calls.c
    trunk/gcc/gimple-ssa-warn-restrict.c
    trunk/gcc/testsuite/ChangeLog