[Bug tree-optimization/78775] [7 Regression] ICE in maybe_warn_alloc_args_overflow

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78775

--- Comment #6 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Jan 10 21:02:07 2017
New Revision: 244290

URL: https://gcc.gnu.org/viewcvs?rev=244290&root=gcc&view=rev
Log:
PR tree-optimization/78775 - [7 Regression] ICE in
maybe_warn_alloc_args_overflow

gcc/ChangeLog:

        PR tree-optimization/78775
        * builtins.c (get_size_range): Move...
        * calls.c: ...to here.
        (alloc_max_size): Accept zero argument.
        (operand_signed_p): Remove.
        (maybe_warn_alloc_args_overflow): Call get_size_range.
        * calls.h (get_size_range): Declare.

gcc/testsuite/ChangeLog:

        PR tree-optimization/78775
        * gcc.dg/attr-alloc_size-4.c: Add test cases.
        * gcc.dg/attr-alloc_size-10.c: New test.
        * gcc.dg/attr-alloc_size-11.c: New test.
        * gcc.dg/builtin-stringop-chk-7.c: New test.
        * gcc.dg/pr78775.c: New test.
        * gcc.dg/pr78973-2.c: New test.
        * gcc.dg/pr78973.c: New test.

Added:
    trunk/gcc/testsuite/gcc.dg/attr-alloc_size-10.c
    trunk/gcc/testsuite/gcc.dg/attr-alloc_size-11.c
    trunk/gcc/testsuite/gcc.dg/builtin-stringop-chk-7.c
    trunk/gcc/testsuite/gcc.dg/pr78775.c
    trunk/gcc/testsuite/gcc.dg/pr78973-2.c
    trunk/gcc/testsuite/gcc.dg/pr78973.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/calls.c
    trunk/gcc/calls.h
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/attr-alloc_size-4.c