Comment # 1 on bug 1142456 from Richard Biener

Please attach preprocessed source.

Note the usual issue is that the formal parameter of list_add has type
T * and thus expects to point to a naturally aligned T but the member
in *log_data isn't aligned naturally.  Note that on some targets
alignment within a structure is less than standalone, for example
powerpc64 big-endian (not sure about LE) aligns a double inside a struct
to 4 bytes but natural alignment of double is 8 bytes.