------- Comment #2 from ajrobb at bigfoot dot com 2007-04-29 19:51 ------- Thanks, I'd forgotten that you can only alias through char* (or types related to the operand).
Given that "A character type may alias any other type.", I suppose I should be able to use (it works): memcpy(&out->fraction, &value, 4); memcpy(&out->mantissa, 4+(char*)&value, 4); out->mantissa &= 0x7fffffff; As all the elements are word aligned and the size is known, memcpy should get inlined. The only slight disadvantage is that the final & operation is done after storing out->mantissa and not before. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31734
