On Fri, Jan 27, 2017 at 04:24:58AM -0200, Alexandre Oliva wrote:
> Output DWARFv5+ DW_AT_alignment for non-default alignment of
> variables, fields and types.

The new tests all fail on targets that default to -gstrict-dwarf
because they have buggy or prehistoric linkers/debug info consumers
like Darwin.

Fixed thusly, tested on x86_64-linux vanilla and with common.opt
hack to turn -gstrict-dwarf and -fno-merge-debug-strings by default,
committed to trunk as obvious:

2017-02-01  Jakub Jelinek  <ja...@redhat.com>

        PR testsuite/79324
        * gcc.dg/debug/dwarf2/align-1.c: Add -gno-strict-dwarf to dg-options.
        * gcc.dg/debug/dwarf2/align-2.c: Likewise.
        * gcc.dg/debug/dwarf2/align-3.c: Likewise.
        * gcc.dg/debug/dwarf2/align-4.c: Likewise.
        * gcc.dg/debug/dwarf2/align-5.c: Likewise.
        * gcc.dg/debug/dwarf2/align-6.c: Likewise.
        * gcc.dg/debug/dwarf2/align-as-1.c: Likewise.
        * g++.dg/debug/dwarf2/align-1.C: Likewise.
        * g++.dg/debug/dwarf2/align-2.C: Likewise.
        * g++.dg/debug/dwarf2/align-3.C: Likewise.
        * g++.dg/debug/dwarf2/align-4.C: Likewise.
        * g++.dg/debug/dwarf2/align-5.C: Likewise.
        * g++.dg/debug/dwarf2/align-6.C: Likewise.

--- gcc/testsuite/gcc.dg/debug/dwarf2/align-1.c.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/gcc.dg/debug/dwarf2/align-1.c 2017-02-01 16:39:24.852112430 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 int __attribute__((__aligned__(64))) i;
--- gcc/testsuite/gcc.dg/debug/dwarf2/align-2.c.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/gcc.dg/debug/dwarf2/align-2.c 2017-02-01 16:39:34.260991165 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 typedef int __attribute__((__aligned__(64))) i_t;
--- gcc/testsuite/gcc.dg/debug/dwarf2/align-3.c.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/gcc.dg/debug/dwarf2/align-3.c 2017-02-01 16:39:37.841945013 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 typedef int int_t;
--- gcc/testsuite/gcc.dg/debug/dwarf2/align-4.c.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/gcc.dg/debug/dwarf2/align-4.c 2017-02-01 16:39:41.889892842 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 2 { xfail { 
powerpc-ibm-aix* } } } }
 
 struct tt {
--- gcc/testsuite/gcc.dg/debug/dwarf2/align-5.c.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/gcc.dg/debug/dwarf2/align-5.c 2017-02-01 16:39:46.117838350 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 struct tt {
--- gcc/testsuite/gcc.dg/debug/dwarf2/align-6.c.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/gcc.dg/debug/dwarf2/align-6.c 2017-02-01 16:39:50.884776913 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 struct tt {
--- gcc/testsuite/gcc.dg/debug/dwarf2/align-as-1.c.jj   2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/gcc.dg/debug/dwarf2/align-as-1.c      2017-02-01 
16:39:55.554716725 +0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 int _Alignas(64) i;
--- gcc/testsuite/g++.dg/debug/dwarf2/align-1.C.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/g++.dg/debug/dwarf2/align-1.C 2017-02-01 16:40:58.421906472 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 int __attribute__((__aligned__(64))) i;
--- gcc/testsuite/g++.dg/debug/dwarf2/align-2.C.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/g++.dg/debug/dwarf2/align-2.C 2017-02-01 16:41:01.340868851 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 typedef int __attribute__((__aligned__(64))) i_t;
--- gcc/testsuite/g++.dg/debug/dwarf2/align-3.C.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/g++.dg/debug/dwarf2/align-3.C 2017-02-01 16:41:04.379829684 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 typedef int int_t;
--- gcc/testsuite/g++.dg/debug/dwarf2/align-4.C.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/g++.dg/debug/dwarf2/align-4.C 2017-02-01 16:41:07.323791741 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 2 { xfail { 
powerpc-ibm-aix* } } } }
 
 struct tt {
--- gcc/testsuite/g++.dg/debug/dwarf2/align-5.C.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/g++.dg/debug/dwarf2/align-5.C 2017-02-01 16:41:10.945745060 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 struct tt {
--- gcc/testsuite/g++.dg/debug/dwarf2/align-6.C.jj      2017-01-31 
09:26:00.000000000 +0100
+++ gcc/testsuite/g++.dg/debug/dwarf2/align-6.C 2017-02-01 16:41:14.330701434 
+0100
@@ -1,5 +1,5 @@
 // { dg-do compile }
-// { dg-options "-O -g -dA" }
+// { dg-options "-O -g -dA -gno-strict-dwarf" }
 // { dg-final { scan-assembler-times " DW_AT_alignment" 1 { xfail { 
powerpc-ibm-aix* } } } }
 
 struct tt {


        Jakub

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