The gcc.dg/mtune.c test is failing on ia64-*-* because in addition to the expected error message that is output it also prints out a note about the valid values for mtune.
$ gcc -mtune=foo mtune.c gcc: error: unrecognized argument in option '-mtune=foo' gcc: note: valid arguments to '-mtune=' are: itanium2 mckinley Looking into why this doesn't happen on other systems, it looks like the difference is that IA64 uses -mtune to set an enum variable and most (all?) the other platforms use it to set a string variable. Since the message seems reasonable I propose to just change the test to expect it. The patch was tested on IA64 HP-UX and Linux. If I don't hear any objections I will just check it in as an obvious fix. Steve Ellcey s...@cup.hp.com 2011-04-01 Steve Ellcey <s...@cup.hp.com> * gcc.dg/mtune.c: Add expected note for target ia64-*-*. Index: gcc.dg/mtune.c =================================================================== --- gcc.dg/mtune.c (revision 171815) +++ gcc.dg/mtune.c (working copy) @@ -4,4 +4,5 @@ /* { dg-error "mtune" "" { target *-*-* } 0 } */ /* { dg-bogus "march" "" { target *-*-* } 0 } */ /* { dg-bogus "mcpu" "" { target *-*-* } 0 } */ +/* { dg-message "note: valid arguments" "" { target ia64-*-* } 0 } */ int i;