Date: Tue, 5 Nov 2002 11:45:29 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Chad Parry <chad@isilon.com> Cc: freebsd-current@FreeBSD.ORG Subject: Re: Hello World stuck in infinite loop Message-ID: <20021105194529.GA23849@troutmask.apl.washington.edu> In-Reply-To: <Pine.BSF.4.21.0211051103540.55960-200000@isilon.com> References: <Pine.BSF.4.21.0211051103540.55960-200000@isilon.com>
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On Tue, Nov 05, 2002 at 11:07:02AM -0800, Chad Parry wrote:
> I'm seeing an infinite loop that can be traced to a signal handler in the
> uthread module. I'm using a snapshot of CURRENT from 2002-01-09.
>
> Repro:
> Write the classic hello world program. When you build it, link in
> libc_r. Use a shell script to execute it over and over in a tight
> loop. This works on my box (using zsh):
>
> # echo 'main() { printf("Hello World!\\n"); }' > hello.c
> # gcc -o hello hello.c -lc_r
With the -v flag, you find
/usr/bin/ld -V -dynamic-linker /usr/libexec/ld-elf.so.1 -o h /usr/lib/crt1.o
/usr/lib/crti.o /usr/lib/crtbegin.o -L/usr/lib /var/tmp/ccGisSmu.o -lc_r
-lgcc -lc -lgcc /usr/lib/crtend.o /usr/lib/crtn.o
What happens if you use
gcc -v -o hello -pthread hello.c
/usr/bin/ld -V -dynamic-linker /usr/libexec/ld-elf.so.1 -o h1 /usr/lib/crt1.o
/usr/lib/crti.o /usr/lib/crtbegin.o -L/usr/lib /var/tmp/ccjfgwUn.o -lgcc
-lc_r -lc -lgcc /usr/lib/crtend.o /usr/lib/crtn.o
Note the order of the libraries.
--
Steve
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