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| author | Martin Sebor <msebor@redhat.com> | 2021-08-24 10:49:11 -0600 |
|---|---|---|
| committer | Martin Sebor <msebor@redhat.com> | 2021-08-24 10:49:11 -0600 |
| commit | 820f0940d7ace1306430a9dcf1bd9577508a7a7e (patch) | |
| tree | b9517cd7a654bf06337532a5395539c4eaa6c55e /gcc/config.gcc | |
| parent | 6d692ef43b2b3368c92c3fb757c7884fc94ee627 (diff) | |
| download | gcc-820f0940d7ace1306430a9dcf1bd9577508a7a7e.zip gcc-820f0940d7ace1306430a9dcf1bd9577508a7a7e.tar.gz gcc-820f0940d7ace1306430a9dcf1bd9577508a7a7e.tar.bz2 | |
Reset PHI base0 flag if it's clear in any argument [PR101977, ...]
Resolves:
PR middle-end/101600 - Spurious -Warray-bounds downcasting a polymorphic pointer
PR middle-end/101977 - bogus -Warray-bounds on a negative index into a parameter in conditional with null
gcc/ChangeLog:
PR middle-end/101600
PR middle-end/101977
* gimple-ssa-warn-access.cc (maybe_warn_for_bound): Tighten up
the phrasing of a warning.
(check_access): Use the remaining size after subtracting any offset
rather than the whole object size.
* pointer-query.cc (access_ref::get_ref): Clear BASE0 flag if it's
clear for any nonnull PHI argument.
(compute_objsize): Clear argument.
gcc/testsuite/ChangeLog:
PR middle-end/101600
PR middle-end/101977
* g++.dg/pr100574.C: Prune out valid warning.
* gcc.dg/pr20126.c: Same.
* gcc.dg/Wstringop-overread.c: Adjust text of expected warnings.
Add new instances.
* gcc.dg/warn-strnlen-no-nul.c: Same.
* g++.dg/warn/Warray-bounds-26.C: New test.
* gcc.dg/Warray-bounds-88.c: New test.
Diffstat (limited to 'gcc/config.gcc')
0 files changed, 0 insertions, 0 deletions