[Bug ld/15057] New: gld creates SHT_PROGBITS .bss section

[ro at TechFak dot Uni-Bielefeld.DE]

http://sourceware.org/bugzilla/show_bug.cgi?id=15057

             Bug #: 15057
           Summary: gld creates SHT_PROGBITS .bss section
           Product: binutils
           Version: 2.23
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
        AssignedTo: address@hidden
        ReportedBy: address@hidden
    Classification: Unclassified
              Host: sparc*-*-solaris2*
            Target: sparc*-*-solaris2*
             Build: sparc*-*-solaris2*


When bootstrapping gcc mainline on Solaris/SPARC (9, 10 or 11) with Sun as and 
gld 2.23.1, several gfortran tests FAIL with

FAIL: gfortran.dg/coarray/alloc_comp_1.f90 -fcoarray=lib  -O2  -lcaf_single
(test for excess errors)
Excess errors:
/vol/gcc/bin/gld-2.23.1: warning: section `.bss' type changed to PROGBITS

It turns out that alloc_comp_1.o has a SHT_NOBITS .bss section, while
libgfortran.so
has a SHT_PROGBITS one.  This is strange, since all input files either have
no .bss section at all or a SHT_NOBITS one.  I've no idea why gld creates it
this way.  When using gas instead of Sun as, many more input objects do have
SHT_NOBITS .bss sections.  There seems no easy way to trace why gld acts this
way, which makes the as/gld combo mostly useless on Solaris/SPARC.  On
Solaris/x86,
where as creates similar objects (no .bss section), the problem doesn't exist.

  Rainer

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