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Message-ID: <38590B91.81E44C40@mobigym.se>
Date: Thu, 16 Dec 1999 16:56:02 +0100
From: Joel Jacobson <joel DOT jacobson AT mobigym DOT se>
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To: pgcc AT delorie DOT com
Subject: fixed or forbidden register 0 (ax) was spilled for class AREG
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Reply-To: pgcc AT delorie DOT com

Hi.

*** I'm not a memeber of this mailing list so please reply to my e-mail
address: joel DOT jacobson AT mobigym DOT se ***

I'm having problems compiling GLIBC 2.1.2 with PGCC 2.95.3.

I first reported this as a bug in GLIBC (after reading about an similar
problem at
http://www.delorie.com/archives/browse.cgi?p=pgcc/1999/03/03/10:46:35)
but they claim that this is a compiler bug.

Andreas Jaeger (aj AT suse DOT de) answered my bug report with this e-mail:
---begin---
''Please upgrade to glibc 2.1.2 if you're using gcc-2.95.x or pgcc
2.95.x.  If it's a bug in glibc 2.1.1, it should be fixed in glibc
2.1.2.  I also advise to use gcc 2.95.2 instead of pgcc 2.95.2.  The
normal gcc has no problems with this code and it really looks like a
compiler bug.

>> How-To-Repeat:
Joel> You will need pgcc 2.95.2, because I don't think gcc 2.95.1 will
detect
Joel> errors like those.
I would say: Produce errors like this.  gcc 2.95.2 compiles glibc
2.1.2 just fine.

I'm closing the bug report soon, if you can't tell me exactly where
glibc 2.1.2 is broken - which I doubt.''
---end---

He must have missunderstood me. What I was trying to do was to _compile_
GLIBC 2.1.2, that is, I was not reporting a _bug_ IN GLIBC 2.1.2, but a
source code error (okey, nearly the same thing, but anyway).

I hope you can fix the bug in PGCC (if there is any), or tell how I can
compile GLIBC 2.1.2 with PGCC 2.95.3.

This is the error I get when executing `make`:

---begin---
make[2]: Entering directory `/usr/src/glibc-2.1.2/db2'
gcc common/db_appinit.c -c -O -Wall -Winline -Wstrict-prototypes
-Wwrite-strings -g   -fPIC    -I../include -I. -I/usr/src/glibcobj/db2
-I.. -I../libio  -I/usr/src/glibcobj -I../sysdeps/i386/elf
-I../crypt/sysdeps/unix -I../linuxthreads/sysdeps/unix/sysv/linux
-I../linuxthreads/sysdeps/pthread -I../linuxthreads/sysdeps/unix/sysv
-I../linuxthreads/sysdeps/unix -I../linuxthreads/sysdeps/i386/i686
-I../linuxthreads/sysdeps/i386 -I../sysdeps/unix/sysv/linux/i386/i686
-I../sysdeps/unix/sysv/linux/i386 -I../sysdeps/unix/sysv/linux
-I../sysdeps/gnu -I../sysdeps/unix/common -I../sysdeps/unix/mman
-I../sysdeps/unix/inet -I../sysdeps/unix/sysv/i386
-I../sysdeps/unix/sysv -I../sysdeps/unix/i386 -I../sysdeps/unix
-I../sysdeps/posix -I../sysdeps/i386/i686 -I../sysdeps/i386/i486
-I../sysdeps/libm-i387/i686 -I../sysdeps/i386/fpu -I../sysdeps/libm-i387
-I../sysdeps/i386 -I../sysdeps/wordsize-32 -I../sysdeps/ieee754
-I../sysdeps/libm-ieee754 -I../sysdeps/generic/elf
-I../sysdeps/generic   -D_LIBC_REENTRANT -include
../include/libc-symbols.h  -DPIC   -DHAVE_LLSEEK=1 -DHAVE_SPINLOCKS=1
-DHAVE_ASSEM_X86_GCC=1 -I./include -include ./compat.h -o
/usr/src/glibcobj/db2/db_appinit.os
common/db_appinit.c: In function `__db_appname':
common/db_appinit.c:479: fixed or forbidden register 0 (ax) was spilled
for class AREG.
common/db_appinit.c:479: This may be due to a compiler bug or to
impossible asm
common/db_appinit.c:479: statements or clauses.
common/db_appinit.c:479: This is the instruction:
(insn 902 901 903 (parallel[
            (set (reg:SI 2 %ecx)
                (unspec:SI[
                        (mem:BLK (reg:SI 5 %edi) 0)
                        (const_int 0 [0x0])
                        (const_int 1 [0x1])
                    ]  0))
            (clobber (reg:SI 5 %edi))
        ] ) 424 {strlensi+1} (insn_list 901 (nil))
    (expr_list:REG_UNUSED (reg:SI 5 %edi)
        (nil)))
make[2]: *** [/usr/src/glibcobj/db2/db_appinit.os] Error 1
make[2]: Leaving directory `/usr/src/glibc-2.1.2/db2'
make[1]: *** [db2/others] Error 2
make[1]: Leaving directory `/usr/src/glibc-2.1.2'
make: *** [all] Error 2
---end---

Thanks in advance.

- Joel Jacobson, student/Stockholm