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authorAndreas Rheinhardt <andreas.rheinhardt@outlook.com>2024-03-25 14:54:35 +0100
committerAndreas Rheinhardt <andreas.rheinhardt@outlook.com>2024-03-28 03:08:01 +0100
commitc85477f78d7916b663bd09169c7ce8d4d345bca3 (patch)
tree36323588d9dcde460a174d8710b342a88df3836e /libavutil/crc.h
parentaa7d6520e6335f9ed45ca2bf0fbf932fb4b2dea6 (diff)
downloadffmpeg-c85477f78d7916b663bd09169c7ce8d4d345bca3.tar.gz
avutil/opt: Don't cast when the result might be misaligned
A pointer conversion is UB if the resulting pointer is not correctly aligned for the resultant type, even if no load/store is ever performed through that pointer (C11 6.3.2.3 (7)). This may happen in opt_copy_elem(), because the pointers are converted even when they belong to a type that does not guarantee sufficient alignment. Fix this by deferring the cast after having checked the type. Also make the casts -Wcast-qual safe and avoid an indirection for src. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Diffstat (limited to 'libavutil/crc.h')
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