[Bug fortran/41640] New: [Regression] Compilation failure with "-g": bad assembler?

[Bug fortran/41640] New: [Regression] Compilation failure with "-g": bad assembler?

[anlauf at gmx dot de]

Hi,

the following code fails to compile with Tobias Burnus' snapshot of trunk:

Character Function gfcbug89 (path)
  Character(len=*), Intent(in) :: path

  gfcbug89 = ""
  If (Len_Trim (path) < 1) Return
  gfcbug89 = path(1:1)   ! This assignment makes gfortran 4.5 error out

End Function gfcbug89

% gfc4x -g -c gfcbug89.f90
/tmp/ccmKoGIh.s: Assembler messages:
/tmp/ccmKoGIh.s:44: Error: unknown .loc sub-directive `discriminator'
/tmp/ccmKoGIh.s:44: Error: junk at end of line, first unrecognized character is
`1'
% gfc4x -g -fbounds-check -c gfcbug89.f90
/tmp/ccMBdSjB.s: Assembler messages:
/tmp/ccMBdSjB.s:52: Error: unknown .loc sub-directive `discriminator'
/tmp/ccMBdSjB.s:52: Error: junk at end of line, first unrecognized character is
`1'
/tmp/ccMBdSjB.s:56: Error: unknown .loc sub-directive `discriminator'
/tmp/ccMBdSjB.s:56: Error: junk at end of line, first unrecognized character is
`1'
/tmp/ccMBdSjB.s:69: Error: unknown .loc sub-directive `discriminator'
/tmp/ccMBdSjB.s:69: Error: junk at end of line, first unrecognized character is
`1'
% gfc4x --version
GNU Fortran (GCC) 4.5.0 20091008 (experimental) [trunk revision 152577]
[...]
% as --version
GNU assembler (GNU Binutils; openSUSE 11.0) 2.18.50.20080409-11.1
Copyright 2007 Free Software Foundation, Inc.
[...]
This assembler was configured for a target of `x86_64-suse-linux'.


I cannot read assembler for x86_64, but it appears that the lines 41-44
in the first case read:

        .loc 1 10 0
        testl   %eax, %eax
        jle     .L1
        .loc 1 10 0 is_stmt 0 discriminator 1

Any ideas?

Cheers,
-ha


-- 
           Summary: [Regression] Compilation failure with "-g": bad
                    assembler?
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: anlauf at gmx dot de
  GCC host triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41640

[Bug fortran/41640] [Regression] Compilation failure with "-g": bad assembler?

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2009-10-09 09:53 -------
Check why

gcc_GAS_CHECK_FEATURE([line table discriminator support],
 gcc_cv_as_discriminator,
 [2,19,51],,
[       .text
        .file 1 "conf.c"
        .loc 1 1 0 discriminator 1],,
[AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1,
  [Define if your assembler supports the .loc discriminator sub-directive.])])

says your gas supports this.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41640

[Bug fortran/41640] [Regression] Compilation failure with "-g": bad assembler?

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2009-10-09 10:01 -------
>says your gas supports this.

Easy this is a binary build with a newer binutils than you have.

So closing as invalid.


-- 

pinskia at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41640