[Bug binutils/152] New: dwarf2 + special link technique causes "DW_FORM_strp pointing outside of .debug_str section" in GDB

[bartoldeman at users dot sourceforge dot net]

This is a followup to the problem reported at
http://sources.redhat.com/ml/bug-binutils/2003-q1/msg00184.html
now narrowed down to a minimal test case.

As it turned out the special somewhat obscure link technique used for embedding
the BIOS inside DOSEMU didn't play well with DWARF-2. As soon as you use STABS
debugging it's all fine. A workaround is to simply don't add debug info for
these objects, and DWARF for all others.

Here's the testcase
makefile: (please tabify)
CFLAGS = -g -O

main: main.o bios.o
        ld $^ -o $@

bios.o: bios.S
        as --gdwarf2 bios.S -o tmp.o
        ld -Ttext 0 -e 0 tmp.o -o bios.o


main.c:
void _start(void) {}

bios.S:
mov 0, %eax

make this and run gdb with it. It will complain. main won't run of course, but
that's just to keep the testcase as small as possible.

The idea of -Ttext 0 -e 0 is to fix all internal relocations in bios.S to 0
but external relocations depend on its position within the final executable.
The "-r" option cannot do this as far as I could see.

-- 
           Summary: dwarf2 + special link technique causes "DW_FORM_strp
                    pointing outside of .debug_str section" in GDB
           Product: binutils
           Version: 2.15
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: bartoldeman at users dot sourceforge dot net
                CC: bug-binutils at gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://sources.redhat.com/bugzilla/show_bug.cgi?id=152

------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.