[Bug testsuite/28837] New: need to prune "can't find atom for N_GSYM stabs" warnings on Darwin for -m64

[Bug testsuite/28837] New: need to prune "can't find atom for N_GSYM stabs" warnings on Darwin for -m64

[howarth at nitro dot med dot uc dot edu]

Currently the ld64 on Darwin seems to create warnings of the form...

can't find atom for N_GSYM stabs i:G(0,2) in /var/tmp//cc6KtMzX.o

when compiling Fortran COMMON blocks at -m64 with the -g flag. These warnings
incorrectly cause about 38 apparent fortran testsuite failures on Darwin. This
problem can be suppressed until the issue causing the warnings (whose cause is
currently unknown) is addressed. The following patch (sorry about the unified
format) allows these warnings to be pruned and ignored during a -m64 make
check.

--- gcc-4.2-20060822/gcc/testsuite/lib/prune.exp.org    2006-08-23
18:33:56.000000000 -0400
+++ gcc-4.2-20060822/gcc/testsuite/lib/prune.exp        2006-08-23
18:41:28.000000000 -0400
@@ -43,6 +43,7 @@
     regsub -all "(^|\n)\[^\n\]*file path prefix \[^\n\]* never used" $text ""
text
     regsub -all "(^|\n)\[^\n\]*linker input file unused since linking not
done" $text "" text

+    regsub -all "(^|\n)can't find atom for N_GSYM stabs \[^\n\]* in \[^\n\]*"
$text "" text
     #send_user "After:$text\n"

     return $text

With this patch in place the fortran testsuite failures for -m64 are identical 
to those for -m32 with three unexpected passes. This patch will help remove
the "noise" off of the Darwin -m64 test results.


-- 
           Summary: need to prune "can't find atom for N_GSYM stabs"
                    warnings on Darwin for -m64
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: testsuite
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: howarth at nitro dot med dot uc dot edu
 GCC build triplet: powerpc-apple-darwin8
  GCC host triplet: powerpc-apple-darwin8
GCC target triplet: powerpc-apple-darwin8


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28837

[Bug testsuite/28837] need to prune "can't find atom for N_GSYM stabs" warnings on Darwin for -m64

[geoffk at gcc dot gnu dot org]

------- Comment #1 from geoffk at gcc dot gnu dot org  2006-10-03 20:50 -------
The patch here is clearly wrong.  If you don't like the warnings, you should
work out why they are being output and fix the underlying bug, rather than
ignoring them in the testsuite.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28837

[Bug testsuite/28837] need to prune "can't find atom for N_GSYM stabs" warnings on Darwin for -m64

[dominiq at lps dot ens dot fr]

------- Comment #2 from dominiq at lps dot ens dot fr  2007-09-13 06:39 -------
The (spurious?) warning is also present in 4.3.

> The patch here is clearly wrong.  If you don't like the warnings, you should
> work out why they are being output and fix the underlying bug, rather than
> gnoring them in the testsuite.

The patch may be wrong, but so far nobody cared to fix the "underlying bug" or
even bothered to explain its origin and how to fix it!-(


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28837

[Bug testsuite/28837] need to prune "can't find atom for N_GSYM stabs" warnings on Darwin for -m64

[howarth at nitro dot med dot uc dot edu]

------- Comment #3 from howarth at nitro dot med dot uc dot edu  2007-09-13 13:07 -------
This issue is eliminated in Xcode 3.0 of Leopard. I've updated my original
radar bug report to ask that the fix be backported to Xcode 2.5 so that it is
available on Tiger as well but I wouldn't hold my breath.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28837

[Bug testsuite/28837] need to prune "can't find atom for N_GSYM stabs" warnings on Darwin for -m64

[howarth at nitro dot med dot uc dot edu]

------- Comment #4 from howarth at nitro dot med dot uc dot edu  2008-11-26 12:46 -------
This issue won't be fixed in the Xcode available for darwin8. It is resolved in
Xcode for darwin9.


-- 

howarth at nitro dot med dot uc dot edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WONTFIX


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28837