------- Comment #14 from sje at cup dot hp dot com 2009-08-06 17:44 ------- Created an attachment (id=18312) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18312&action=view) test case where stage1 and stage2 generate different code
After applying the most recent patch the ia64 bootstrap started working but the pa bootstrap (hppa2.0w-hp-hpux11.11) started failing. The stage2/stage3 comparision failed. I cut down fortran/io.c into test4.c, and when I compile this test case with the stage1-gcc/cc1 I get unsigned extraction instructions in the code stream but with stage2-gcc/cc1 I get signed extraction instructions. I think the signed extractions are wrong since format_string is a pointer to an unsigned int, but then again we are putting the value into a signed char. If I make the function an 'unsigned char' then the problem goes away. Originally the function was just 'char' and it also had the problem -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40952
