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| author | Jakub Jelinek <jakub@redhat.com> | 2021-07-27 09:59:37 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2021-07-27 09:59:37 +0200 |
| commit | a21bd3cebd6f54af70a37c18b8fbeae933fb6515 (patch) | |
| tree | 84262a34a51b1b3a9fc51ac12d9d6239bb737598 /gcc/cgraphclones.c | |
| parent | 5485e820cd0554886af282265198c7433c64c7b9 (diff) | |
| download | gcc-a21bd3cebd6f54af70a37c18b8fbeae933fb6515.zip gcc-a21bd3cebd6f54af70a37c18b8fbeae933fb6515.tar.gz gcc-a21bd3cebd6f54af70a37c18b8fbeae933fb6515.tar.bz2 | |
gimple-fold: Fix up __builtin_clear_padding on classes with virtual inheritence [PR101586]
For the following testcase, B is 16-byte type, containing 8-byte
virtual pointer and 1-byte A member, and C contains two FIELD_DECLs,
one with B type and size of just 8-byte and then a field with type
A and 1-byte size.
The __builtin_clear_padding code was upset about the B typed FIELD_DECL
containing FIELD_DECLs beyond the field size and triggered
assertion failure.
This patch makes it ignore all FIELD_DECLs that are (fully) beyond the sz
passed from the caller (except for the flexible array member
diagnostics that is kept).
2021-07-27 Jakub Jelinek <jakub@redhat.com>
PR middle-end/101586
* gimple-fold.c (clear_padding_type): Ignore FIELD_DECLs with byte
positions above or equal to sz except for diagnostics of flexible
array members.
* g++.dg/torture/builtin-clear-padding-4.C: New test.
Diffstat (limited to 'gcc/cgraphclones.c')
0 files changed, 0 insertions, 0 deletions