[Bug tree-optimization/88659] [9 Regression] ICE in maybe_warn_nonstring_arg at gcc/calls.c:1688 since r267503

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88659

--- Comment #2 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Fri Jan  4 03:13:33 2019
New Revision: 267569

URL: https://gcc.gnu.org/viewcvs?rev=267569&root=gcc&view=rev
Log:
PR tree-optimization/88659 - ICE in maybe_warn_nonstring_arg

gcc/ChangeLog:
        * calls.c (maybe_warn_nonstring_arg): Avoid assuming maxlen is set.

gcc/testsuite/ChangeLog:
        * gcc.dg/Wstringop-truncation-6.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/Wstringop-truncation-6.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/calls.c
    trunk/gcc/testsuite/ChangeLog