[Bug debug/44171] New: gcc -gdwarf-2 -dA unconditionally emits .ascii

[Bug debug/44171] New: gcc -gdwarf-2 -dA unconditionally emits .ascii

[ro at gcc dot gnu dot org]

In testing patches to support Solaris 9/x86 with Sun as on Solaris 11/x86, I
noticed that several testcases with -gdwarf-2 -dA failed, producing invalid
assembler output.  I could trace this down to dwarf2asm.c
(dw2_asm_output_nstring)
unconditionally emitting .ascii, which the Solaris 8/x86 as doesn't understand.

This dates back to the initial version of dwarf2asm.c

ASM_OUTPUT_ASCII cannot be used as is since w2_asm_output_nstring adds a
comment
after the string without a preceding newline.  My current solution is to add a
variant of ASM_OUTPUT_ASCII, ASM_OUTPUT_ASCII_NONL, with an additional fourth
arg
NONL which controls whether or not the newline is printed.

I still have to disentangle the different versions of ASM_OUTPUT_ASCII since
the initial version (which changed config/i386/sysv4.h) ysed .byte directives
to emit the string, which breaks the corresponding testcases, and didn't emit
empty strings at all.


-- 
           Summary: gcc -gdwarf-2 -dA unconditionally emits .ascii
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Keywords: assemble-failure
          Severity: normal
          Priority: P3
         Component: debug
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at gcc dot gnu dot org
 GCC build triplet: i386-pc-solaris2*
  GCC host triplet: i386-pc-solaris2*
GCC target triplet: i386-pc-solaris2*


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44171