[Qt-interest] Segmentation Fault when Program Starts

[Karl Ruetz]

Hello,

Srdjan Todorovic wrote:
> Hi,
> 
> On 08/09/2009, Karl Ruetz <karl.ruetz at sototech.com> wrote:
> 
>> # ldd -r QTTest2
>> ldd: exited with unknown exit code (139)
> 
> Never seen ldd exit like this, which is weird.
> 
> http://andre.stechert.org/urwhatu/2005/06/ldd_ldlinuxso2_.html
> Seems to suggest ldd has a segfault somewhere.

The problem appears to be with the executable itself, not ldd.

> 
>> # gdb QTTest3
>> "i386-redhat-linux-gnu"..."/usr/local/tmp/QTTest3": not in executable
>> format: File format not recognized
> 
> Is the binary corrupt?
> Is your compiler creating broken C++ executables?
> 
> Can you try a simple C++ hello world test program with std::cout ?

I did.  If I use the following source code, the executable works:
#include <stdio.h>
int main()
{
     fprintf(stderr, "Program running.\n");
     return 0;
}

If I use the following source code it does not work:
#include <QDebug>
int main()
{
     qDebug("Program running.");
     return 0;
}

> 
> Are you compiling on a 64 bit machine?
> (https://bugzilla.redhat.com/show_bug.cgi?id=483449)

The development machine is a 32-bit machine.
The end user's machine is a 64-bit machine.
The binary is 32-bit.
# file QTTest2
QTTest2: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for 
GNU/Linux 2.6.9, dynamically linked (uses shared libs), for GNU/Linux 
2.6.9, not stripped

> 
> Hope that helps
> Srdjan
> 
> 

Thanks,
Karl