Re: syms_from_objfile() warnings and win32-nat.c IO redirection (Was: suppress annoying warnings about cygwin1.dbg)

[Pedro Alves <pedro_alves@portugalmail.pt>]

I'm a bit puzzled, since I've just found out that:

strip --strip-debug ${dest} -o ${stripped_file}
strip --only-keep-debug main.exe -o ${debug_file}
objcopy --add-gnu-debuglink=${debug_file} ${stripped_file} ${dest}

... currently plays nicelly in PE/coff + stabs+.  The
CONTENTS | ALLOC sections simply get
the CONTENTS dropped, thus it seems that gdb
doesn't need any fixing after all.

>objdump.exe -h main.exe

main.exe:     file format pei-i386

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
   0 .text         000003a0  00401000  00401000  00000400  2**4
                   CONTENTS, ALLOC, LOAD, READONLY, CODE
   1 .data         00100000  00402000  00402000  00000800  2**4
                   CONTENTS, ALLOC, LOAD, DATA
   2 .bss          00000040  00502000  00502000  00000000  2**4
                   ALLOC
   3 .idata        00000170  00503000  00503000  00100800  2**2
                   CONTENTS, ALLOC, LOAD, DATA
   4 .gnu_debuglink 00000014  00504000  00504000  00100a00  2**2
                   CONTENTS, READONLY, DEBUGGING

>objdump.exe -h main.exe.dbg

main.exe.dbg:     file format pei-i386

Sections:
Idx Name          Size      VMA       LMA       File off  Algn
   0 .text         000003a0  00401000  00401000  00000000  2**4
                   ALLOC, LOAD, READONLY, CODE
   1 .data         00100000  00402000  00402000  00000000  2**4
                   ALLOC, LOAD, DATA
   2 .bss          00000040  00502000  00502000  00000000  2**4
                   ALLOC
   3 .idata        00000170  00503000  00503000  00000000  2**2
                   ALLOC, LOAD, DATA
   4 .stab         0000c630  00504000  00504000  00000268  2**2
                   CONTENTS, READONLY, DEBUGGING, EXCLUDE
   5 .stabstr      0004e99f  00511000  00511000  0000ca68  2**0
                   CONTENTS, READONLY, DEBUGGING, EXCLUDE


Chris, Brian, would it be possible to instead fix the
cygwin1.dbg generation to do something similar to
the above recipe?

I'm posting a few patches to enable sepdebug.exp and
sepsymtab.exp testing on Cygwin.

I've also locally hacked shreloc.exp to generate seperate
debug info to test shared objects, and relocation, as
that isn't currently tested by sepdebug.exp.  It worked
fine.

This means the patches upthread are withdrawn
for now.

Cheers,
Pedro Alves