https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96900
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Known to fail| |10.2.0, 11.0, 9.3.0
Summary|bogus -Warray-bounds on |[9/10/11 Regression] bogus
|strlen with valid pointer |-Warray-bounds on strlen
|obtained from |with valid pointer obtained
|just-past-the-end |from just-past-the-end
--- Comment #1 from Martin Sebor <msebor at gcc dot gnu.org> ---
The false positive was introduced in r274837:
commit 14b7950f126f84fa585e3a057940ff10d4c5b3f8
Author: Martin Sebor <mse...@redhat.com>
Date: Thu Aug 22 23:09:26 2019 +0000
PR middle-end/91490 - bogus argument missing terminating nul warning on
strlen of a flexible array member
gcc/c-family/ChangeLog:
PR middle-end/91490
* c-common.c (braced_list_to_string): Add argument and overload.
Handle flexible length arrays and unions.
gcc/ChangeLog:
PR middle-end/91490
* builtins.c (c_strlen): Rename argument and introduce new local.
Set no-warning bit on original argument.
* expr.c (string_constant): Pass argument type to
fold_ctor_reference.
Fold empty and zero constructors into empty strings.
* gimple-fold.c (fold_nonarray_ctor_reference): Return a STRING_CST
for missing initializers.
* tree.c (build_string_literal): Handle optional argument.
* tree.h (build_string_literal): Add defaulted argument.
* gimple-ssa-warn-restrict.c (maybe_diag_access_bounds): Check
no-warning bit on original expression.
