| commit | 40eafc9b51049b4626ab34565c5b263e580738cd | |
| author | jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Fri, 3 Aug 2018 15:25:35 +0000 (3 15:25 +0000) | ||
| committer | jsm28 <jsm28@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Fri, 3 Aug 2018 15:25:35 +0000 (3 15:25 +0000) | ||
| tree | 976a94aedd0a8d55a01a8027541c47a938e0e252 | treesnapshot (tar.gz zip) |
| parent | 960639dc9a23db586d10319a5368d218d5171368 | commitdiff |
Avoid infinite loop with duplicate anonymous union fields (PR c/86690).
If a struct contains an anonymous union and both have a field with the
same name, detect_field_duplicates_hash() will replace one of them
with NULL. If compilation doesn't stop immediately, it may later call
lookup_field() on the union, which falsely assumes the union's
LANG_SPECIFIC array is sorted, and may loop indefinitely because of
this.
2018-08-03 Bogdan Harjoc <harjoc@gmail.com>
PR c/86690
gcc/c:
* c-typeck.c (lookup_field): Do not use TYPE_LANG_SPECIFIC after
errors.
gcc/testsuite:
* gcc.dg/union-duplicate-field.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@263294 138bc75d-0d04-0410-961f-82ee72b054a4
If a struct contains an anonymous union and both have a field with the
same name, detect_field_duplicates_hash() will replace one of them
with NULL. If compilation doesn't stop immediately, it may later call
lookup_field() on the union, which falsely assumes the union's
LANG_SPECIFIC array is sorted, and may loop indefinitely because of
this.
2018-08-03 Bogdan Harjoc <harjoc@gmail.com>
PR c/86690
gcc/c:
* c-typeck.c (lookup_field): Do not use TYPE_LANG_SPECIFIC after
errors.
gcc/testsuite:
* gcc.dg/union-duplicate-field.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@263294 138bc75d-0d04-0410-961f-82ee72b054a4
| gcc/c/ChangeLog | diffblobblamehistory | |
| gcc/c/c-typeck.c | diffblobblamehistory | |
| gcc/testsuite/ChangeLog | diffblobblamehistory | |
| gcc/testsuite/gcc.dg/union-duplicate-field.c | [new file with mode: 0644] | blob |