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| H A D | partition.c | 21a77e08921a13ac4adc523a136d829333a854f1 Thu Jul 04 11:33:15 UTC 2024 Chris Webb <chris@arachsys.com> fix(guid-partition): fix unaligned access in load_mbr_header()
load_mbr_header() casts an unaligned pointer to (mbr_entry_t *) then
dereferences struct members with non-trivial alignment requirements.
This causes a bl2 with BOOT_DEVICE=emmc to hang when compiled with clang
18.1.5, although it works when compiled with gcc 14.1.0. Presumably gcc's
-mstrict-align papers over the undefined behaviour whereas clang's doesn't.
Replace the unaligned cast with a safe memcpy() into an mbr_entry_t.
Signed-off-by: Chris Webb <chris@arachsys.com>
Change-Id: Iefd4dac7e390ddf369b8dacdbaf14e599118f91d
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