[Bug analyzer/106539] -fanalyzer doesn't consider that realloc could shrink the buffer
cvs-commit at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Fri Aug 12 09:14:09 GMT 2022
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106539
--- Comment #1 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tim Lange <tlange@gcc.gnu.org>:
https://gcc.gnu.org/g:2b75b3b6a4ddc0d65a84a0cc4b00c47ae70e52c0
commit r13-2028-g2b75b3b6a4ddc0d65a84a0cc4b00c47ae70e52c0
Author: Tim Lange <mail@tim-lange.me>
Date: Fri Aug 12 10:26:14 2022 +0200
analyzer: consider that realloc could shrink the buffer [PR106539]
This patch adds the "shrinks buffer" case to the success_with_move
modelling of realloc.
Regression-tested on Linux x86-64, further ran the analyzer tests with
the -m32 option.
2022-08-11 Tim Lange <mail@tim-lange.me>
gcc/analyzer/ChangeLog:
PR analyzer/106539
* region-model-impl-calls.cc (region_model::impl_call_realloc):
Use the result of get_copied_size as the size for the
sized_regions in realloc.
(success_with_move::get_copied_size): New function.
gcc/testsuite/ChangeLog:
PR analyzer/106539
* gcc.dg/analyzer/pr106539.c: New test.
* gcc.dg/analyzer/realloc-5.c: New test.
More information about the Gcc-bugs
mailing list