r261518 - in /trunk/gcc: ChangeLog builtins.c g...

[msebor@gcc.gnu.org]

Author: msebor
Date: Tue Jun 12 18:05:13 2018
New Revision: 261518

URL: https://gcc.gnu.org/viewcvs?rev=261518&root=gcc&view=rev
Log:
PR tree-optimization/85259 - Missing -Wstringop-overflow= since r256683

gcc/ChangeLog:

	PR tree-optimization/85259
	* builtins.c (compute_objsize): Handle constant offsets.
	* gimple-ssa-warn-restrict.c (maybe_diag_offset_bounds): Return
	true iff a warning has been issued.
	* gimple.h (gimple_nonartificial_location): New function.
	* tree-ssa-strlen.c (maybe_diag_stxncpy_trunc): Call
	gimple_nonartificial_location and handle -Wno-system-headers.
	(handle_builtin_stxncpy): Same.

gcc/testsuite/ChangeLog:

	PR tree-optimization/85259
	* gcc.dg/Wstringop-overflow-5.c: New test.
	* gcc.dg/Wstringop-overflow-6.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/Wstringop-overflow-5.c
    trunk/gcc/testsuite/gcc.dg/Wstringop-overflow-6.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/gimple-ssa-warn-restrict.c
    trunk/gcc/gimple.h
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-strlen.c