c/9653: invalid detection of "cannot specify -o with -c or -S and multiple compilations" condition

[ianw at gelato dot unsw dot edu dot au]

>Number:         9653
>Category:       c
>Synopsis:       invalid detection of "cannot specify -o with -c or -S and multiple compilations" condition
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Feb 11 03:56:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     ianw@gelato.unsw.edu.au
>Release:        gcc version 3.3 20030129
>Organization:
>Environment:
IA64 Linux
>Description:
This rather complex command line (below) is given by glibc to build a generated header file.  Somewhere gcc 3.3 is thinking it is doing something like

gcc -S -o file test1.c test2.c

This same command line (below) works fine with gcc 3.2.  I'm sorry but I don't know exactly what is causing this, but it is repeatable.  I have stripped out all the -I's to make the command line more readable.  Hopefully you can see where the problem is.

--other cruft --

gawk -f ../scripts/gen-as-const.awk
../linuxthreads/sysdeps/ia64/tcb-offsets.sym \ | 

-- gcc command line --

gcc -S -o - -std=gnu99 -O2 -Wall -Winline -Wstrict-prototypes -Wwrite-strings -g [lots of -I's] -D_LIBC_REENTRANT -include ../include/libc-symbols.h -DHAVE_INITFINI -D_ASM_IA64_CURRENT_H -x c - -MD -MF /home/ianw/libc-normal/tcb-offsets.h.dT -MT '/home/ianw/libc-normal/tcb-offsets.h.d /home/ianw/libc-normal/tcb-offsets.h' 

-- more non relevant things --

| sed -n
's/^.*@@@name@@@\([^@]*\)@@@value@@@[^0-9Xxa-fA-F-]*\([0-9Xxa-fA-F-][0-9Xxa-fA-F-]*\).*@@@end@@@.*$/#define
\1 \2/p' > /home/ianw/libc-normal/tcb-offsets.hT

with 3.3 the error is 

gcc: cannot specify -o with -c or -S and multiple compilations

with 3.2 there is no error and the output is as expected.
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: