[Bug c/48264] New: Simple dummy program fails with Segmentation Fault upon -shared linking

[leo.izen at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48264



           Summary: Simple dummy program fails with Segmentation Fault

                    upon -shared linking

           Product: gcc

           Version: 4.5.1

            Status: UNCONFIRMED

          Severity: normal

          Priority: P3

         Component: c

        AssignedTo: unassig...@gcc.gnu.org

        ReportedBy: leo.i...@gmail.com





Here's my output of gcc -v:



Using built-in specs.

COLLECT_GCC=/usr/bin/gcc

COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.5.1/lto-wrapper

Target: x86_64-redhat-linux

Configured with: ../configure --prefix=/usr --mandir=/usr/share/man

--infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla

--enable-bootstrap --enable-shared --enable-threads=posix

--enable-checking=release --with-system-zlib --enable-__cxa_atexit

--disable-libunwind-exceptions --enable-gnu-unique-object

--enable-linker-build-id

--enable-languages=c,c++,objc,obj-c++,java,fortran,ada,lto --enable-plugin

--enable-java-awt=gtk --disable-dssi

--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre

--enable-libgcj-multifile --enable-java-maintainer-mode

--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib

--with-ppl --with-cloog --with-tune=generic --with-arch_32=i686

--build=x86_64-redhat-linux

Thread model: posix

gcc version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC) 



I make a simple C program, compiled it an ran it. If I link it with -shared, it

segfaults, as in:



[Leo@chessman ~]$ cat test.c

int main(void) {

    return 0;

}

[Leo@chessman ~]$ gcc -c -o test.o test.c

[Leo@chessman ~]$ gcc -o test test.o

[Leo@chessman ~]$ ./test

[Leo@chessman ~]$ gcc -shared -o test test.o

[Leo@chessman ~]$ ./test

Segmentation fault (core dumped)

[Leo@chessman ~]$



I assume that this is a bug in collect2 and not cc1 given that linking

differently fixed it, but I would like to link with -shared so this is sort of

annoying.