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21e0305f5d
The alignment of sqldata is in most cases only the basic alignment, so the code type-puns it to a larger type, it *can* crash due to the misaligned access. This is only an issue for types > 4 bytes because every sensible system requires an alignment of at least 4 bytes for allocated data. Even though this patch uses memcpy, the compiler is smart enough to optimise it to something more efficient, especially on x86. This is just the usual approach to solve these alignment problems. Actually, unaligned memory access is undefined behaviour, so even on x86 platforms, where the bug doesn't cause a crash, this can be problematic. Furthermore, even though the issue talks about a 64-bit kernel and 32-bit userspace, this doesn't necessarily need to be the case to trigger this crash. Test was Co-authored-by: rvk01 Closes GH-10920. |
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| tests | ||
| config.m4 | ||
| config.w32 | ||
| CREDITS | ||
| firebird_driver.c | ||
| firebird_statement.c | ||
| pdo_firebird.c | ||
| php_pdo_firebird.h | ||
| php_pdo_firebird_int.h | ||