The test fails because the generated assembly code assumes the branch table immediately follows the branch.
mfia %r19 ldo 24(%r19),%r19 ldw,s %r28(%r19),%r31 extrd,s %r31,63,32,%r31 add,l %r19,%r31,%r31 bv,n %r0(%r31) .align 8 L$0007: .begin_brtab .word L$0003-L$0007 The problem is the "ldo" instruction. This problem was seen on hppa64-hp-hpux11.11 but I believe that it applies to all hppa targets. -- Summary: FAIL: gcc.dg/falign-labels-1.c execution test Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: danglin at gcc dot gnu dot org GCC build triplet: hppa*-*-* GCC host triplet: hppa*-*-* GCC target triplet: hppa*-*-* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40575