[Bug debug/55063] New: [4.8 Regression] Thousands of failures in the libstdc++-v3 tests after revision 192739

["dominiq at lps dot ens.fr" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55063

             Bug #: 55063
           Summary: [4.8 Regression] Thousands of failures in the
                    libstdc++-v3 tests after revision 192739
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dominiq@lps.ens.fr
                CC: howarth@nitro.med.uc.edu, iains@gcc.gnu.org,
                    pkoning@gcc.gnu.org
              Host: x86_64-apple-darwin10
            Target: x86_64-apple-darwin10
             Build: x86_64-apple-darwin10


After revision 192739, I got thousands of failures in the libstdc++-v3 tests on
x86_64-apple-darwin10 (Xcode 3.2.6) of the kind:

FAIL: 17_intro/static.cc (test for excess errors)
Excess errors:
warning: invalid DWARF generated by the compiler: DIE 0x0000459e has multiple 
AT_declaration attributes in '/var/tmp//ccYrx3xr.o'.

I don't know if this is an Apple's bug or not (and I don't care! if it is the
case it won't be fixed for darwin 10). I have silenced the failures with the
following hack (i.e., pruning the warning):

--- ../_clean/libstdc++-v3/testsuite/lib/prune.exp    2012-04-11
14:09:59.000000000 +0200
+++ libstdc++-v3/testsuite/lib/prune.exp    2012-10-24 16:55:36.000000000 +0200
@@ -63,6 +63,7 @@ proc libstdc++-dg-prune { system text } 
     regsub -all "(^|\n)\[^\n\]*ld: warning: can't add line info to anonymous
symbol\[^\n\]*" $text "" text
     regsub -all "(^|\n)\[^\n\]*warning:
DWARFDebugInfoEntry::AppendDependants\[^\n\]*AT_\[^\n\]*_bound\[^\n\]*FORM_ref4\[^\n\]*"
$text "" text
     regsub -all "(^|\n)\[^\n\]*warning:\[^\n\]*TAG_variable: 
AT_location\[^\n\]*didn't have valid function low pc\[^\n\]*" $text "" text
+    regsub -all "(^|\n)\[^\n\]*warning: invalid DWARF generated by the
compiler: DIE \[^\n\]* has multiple  AT_declaration attributes in\[^\n\]*"
$text "" text

     # Ignore harmless warnings from Xcode 4.0.
     regsub -all "(^|\n)\[^\n\]*ld: warning: could not create compact unwind
for\[^\n\]*" $text "" text

tested with -m64 only.