Files
FFmpeg/libavutil
Andreas Rheinhardt c85477f78d 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>
2024-03-28 03:08:01 +01:00
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