[Bug c/11469] Code compiles and runs correctly without optimisation but causes a bus error if -O is used on Solaris 2.8

[ebotcazou at gcc dot gnu dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11469


ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID


------- Additional Comments From ebotcazou at gcc dot gnu dot org  2003-07-09 10:24 -------
Your code invokes undefined behaviour according to the C standard, because
you're converting a void pointer 'p' (which has the alignment requirement of
char* pointer) to a double* pointer, and 'p' is not sufficiently aligned for
pointing to a double.

char* pointers are 4-byte aligned on SPARC while double* pointers are 8-byte
aligned.