[Bug middle-end/96335] [10/11 Regression] ICE in maybe_warn_rdwr_sizes since r10-4929
cvs-commit at gcc dot gnu.org
Tue Jul 28 09:09:19 GMT 2020
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <firstname.lastname@example.org>:
Author: Jakub Jelinek <email@example.com>
Date: Tue Jul 28 11:08:29 2020 +0200
expander: Fix ICE in maybe_warn_rdwr_sizes [PR96335]
The following testcase ICEs in maybe_warn_rdwr_sizes. The problem is that
the caller uses its fndecl and fntype variables to fill up rdwr_map, and
the fntype in that case is a prototype with the access attribute and all
the checks needed for that performed. But the maybe_warn_rdwr_sizes
function tries to rediscover fndecl/fntype itself and does it differently
from how the caller did (for fndecl get_callee_fndecl and fntype from that
FUNCTION_DECL, otherwise sets fntype to CALL_EXPR_FN's type).
On the testcase, get_callee_fndecl does find a FUNCTION_DECL because
it does STRIP_NOPS in between.
Instead of trying to rediscover those, this patch just passes them down,
like is done in several other functions.
2020-07-28 Jakub Jelinek <firstname.lastname@example.org>
* calls.c (maybe_warn_rdwr_sizes): Add FNDECL and FNTYPE arguments,
instead of trying to rediscover them in the body.
(initialize_argument_information): Adjust caller.
* gcc.dg/pr96335.c: New test.
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