[Bug debug/54499] New: GCC produces wrong debugging information, failure while assembling generated .s file

[Bug debug/54499] New: GCC produces wrong debugging information, failure while assembling generated .s file

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54499

             Bug #: 54499
           Summary: GCC produces wrong debugging information, failure
                    while assembling generated .s file
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: debug
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: d.g.gorbachev@gmail.com


Created attachment 28138
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28138
Testcase

GCC 4.8.0 20120902 (experimental). Compile with `-gstabs+' option.

bug.s: Assembler messages:
bug.s:133: Error: can't resolve `.text._ZN2S3D1Ev' {.text._ZN2S3D1Ev section} -
`.LFBB3' {.text._ZN2S3D2Ev section}

[Bug debug/54499] GCC produces wrong debugging information, failure while assembling generated .s file

[d.g.gorbachev at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54499

--- Comment #1 from Dmitry Gorbachev <d.g.gorbachev at gmail dot com> 2012-09-06 00:03:39 UTC ---
Created attachment 28139
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28139
Code generated by GCC

[Bug debug/54499] [4.8 Regression] GCC produces wrong debugging information, failure while assembling generated .s file

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54499

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.8.0
            Summary|GCC produces wrong          |[4.8 Regression] GCC
                   |debugging information,      |produces wrong debugging
                   |failure while assembling    |information, failure while
                   |generated .s file           |assembling generated .s
                   |                            |file

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-09-06 00:26:17 UTC ---
Is there a reason why you are using stabs+ debugging?

[Bug debug/54499] [4.8 Regression] GCC produces wrong debugging information, failure while assembling generated .s file

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54499

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-11-08
                 CC|                            |jakub at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-08 11:50:36 UTC ---
Broken by http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=190190

[Bug debug/54499] [4.8 Regression] GCC produces wrong debugging information, failure while assembling generated .s file

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54499

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-08 12:30:21 UTC ---
Created attachment 28635
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28635
gcc48-pr54499.patch

That change looks very much broken to me, this should hopefully fix it
properly.

[Bug debug/54499] [4.8 Regression] GCC produces wrong debugging information, failure while assembling generated .s file

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54499

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |jakub at gcc dot gnu.org
                   |gnu.org                     |

[Bug debug/54499] [4.8 Regression] GCC produces wrong debugging information, failure while assembling generated .s file

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54499

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-08 20:15:12 UTC ---
Author: jakub
Date: Thu Nov  8 20:15:06 2012
New Revision: 193338

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193338
Log:
    PR debug/54499
    * cgraphunit.c (assemble_thunk): Don't call source_line debug hook
    here, instead call insn_locations_{init,finalize} and initialize
    prologue_location.

    * g++.dg/debug/pr54499.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/debug/pr54499.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cgraphunit.c
    trunk/gcc/testsuite/ChangeLog

[Bug debug/54499] [4.8 Regression] GCC produces wrong debugging information, failure while assembling generated .s file

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54499

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-08 20:17:46 UTC ---
Fixed.