Looking at the remaining Tru64 UNIX testsuite failures, I noticed that the gcc.dg/compat/struct-layout-1.exp tests are built with -fno-common on PA HP-UX. Since Alpha Tru64 UNIX is often similar, I tried this and in fact most of the failures are gone. The single one in g++.dg/compat/struct-layout-1.exp is unaffected, but I changed that along the same line for consistency.
Tested with the appropriate runtest invocations, installed on mainline. There are only 4 remaining failures now: FAIL: tmpdir-g++.dg-struct-layout-1/t027 cp_compat_x_tst.o-cp_compat_y_tst.o execute FAIL: tmpdir-gcc.dg-struct-layout-1/t025 c_compat_x_tst.o-c_compat_y_tst.o execute FAIL: tmpdir-gcc.dg-struct-layout-1/t027 c_compat_x_tst.o-c_compat_y_tst.o execute FAIL: tmpdir-gcc.dg-struct-layout-1/t028 c_compat_x_tst.o-c_compat_y_tst.o execute As an example, I had a look at tmpdir-gcc.dg-struct-layout-1/t025: compiled with -DDBG, the first failure is fail 2210.1 with 17 more (all N.1): the failure is like this: typedef int __attribute__((mode(HI))) hi; typedef hi __attribute__((vector_size (32))) v16hi; struct S2210 { v16hi a; }; struct S2210 s2210; extern struct S2210 a2210[5]; info.als = __alignof__ (s2210); if (((long) &a2210[3]) & (info.als - 1)) printf ("fail %d.%d\n", 2210, 1), ++fails; info.als is 32, ((long) &a2210[3]) & (info.als - 1) is 16; it seems the alignment of vector types is inconsistent here. Rainer 2011-06-07 Rainer Orth <r...@cebitec.uni-bielefeld.de> PR middle-end/21953 * gcc.dg/compat/struct-layout-1_generate.c (dg-options): Use -fno-common on alpha*-dec-osf*. * g++.dg/compat/struct-layout-1_generate.c (dg-options): Likewise. diff --git a/gcc/testsuite/g++.dg/compat/struct-layout-1_generate.c b/gcc/testsuite/g++.dg/compat/struct-layout-1_generate.c --- a/gcc/testsuite/g++.dg/compat/struct-layout-1_generate.c +++ b/gcc/testsuite/g++.dg/compat/struct-layout-1_generate.c @@ -1,5 +1,6 @@ /* Structure layout test generator. - Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc. + Copyright (C) 2004, 2005, 2007, 2008, 2009, 2011 + Free Software Foundation, Inc. Contributed by Jakub Jelinek <ja...@redhat.com>. This file is part of GCC. @@ -45,7 +46,7 @@ along with GCC; see the file COPYING3. const char *dg_options[] = { "/* { dg-options \"%s-I%s\" } */\n", "/* { dg-options \"%s-I%s -mno-mmx -Wno-abi\" { target i?86-*-* x86_64-*-* } } */\n", -"/* { dg-options \"%s-I%s -fno-common\" { target hppa*-*-hpux* powerpc*-*-darwin* *-*-mingw32* *-*-cygwin* } } */\n", +"/* { dg-options \"%s-I%s -fno-common\" { target alpha*-dec-osf* hppa*-*-hpux* powerpc*-*-darwin* *-*-mingw32* *-*-cygwin* } } */\n", "/* { dg-options \"%s-I%s -mno-mmx -fno-common -Wno-abi\" { target i?86-*-darwin* x86_64-*-darwin* } } */\n", "/* { dg-options \"%s-I%s -mno-base-addresses\" { target mmix-*-* } } */\n", "/* { dg-options \"%s-I%s -mlongcalls -mtext-section-literals\" { target xtensa*-*-* } } */\n" diff --git a/gcc/testsuite/gcc.dg/compat/struct-layout-1_generate.c b/gcc/testsuite/gcc.dg/compat/struct-layout-1_generate.c --- a/gcc/testsuite/gcc.dg/compat/struct-layout-1_generate.c +++ b/gcc/testsuite/gcc.dg/compat/struct-layout-1_generate.c @@ -1,5 +1,6 @@ /* Structure layout test generator. - Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation, Inc. + Copyright (C) 2004, 2005, 2007, 2008, 2009, 2011 + Free Software Foundation, Inc. Contributed by Jakub Jelinek <ja...@redhat.com>. This file is part of GCC. @@ -46,7 +47,7 @@ const char *dg_options[] = { "/* { dg-options \"%s-I%s\" } */\n", "/* { dg-options \"%s-I%s -Wno-abi\" } */\n", "/* { dg-options \"%s-I%s -mno-mmx -Wno-abi\" { target i?86-*-* x86_64-*-* } } */\n", -"/* { dg-options \"%s-I%s -fno-common\" { target hppa*-*-hpux* powerpc*-*-darwin* } } */\n", +"/* { dg-options \"%s-I%s -fno-common\" { target alpha*-dec-osf* hppa*-*-hpux* powerpc*-*-darwin* } } */\n", "/* { dg-options \"%s-I%s -mno-mmx -fno-common -Wno-abi\" { target i?86-*-darwin* x86_64-*-darwin* } } */\n", "/* { dg-options \"%s-I%s -mno-base-addresses\" { target mmix-*-* } } */\n", "/* { dg-options \"%s-I%s -mlongcalls -mtext-section-literals\" { target xtensa*-*-* } } */\n" -- ----------------------------------------------------------------------------- Rainer Orth, Center for Biotechnology, Bielefeld University