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SIGSEGV Error when debugging with Qt creator.
jiapei100 last edited by
A related discuss can be found at
First of all, my environment:
C++ gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
Qt Creator 2.4.1 Based on Qt 4.8.0 (32 bit) Built on Mar 21 2012 at 23:05:03
Eclipse IDE for C/C++ Linux Developers Version: Indigo Service Release 2 Build id: 20120216-1857[/quote]
I tried both Eclipse and QtCreator. Under Eclipse, my application runs fine, but under QtCreator, the application always got the SIGSEGV error:
[quote]The inferior stopped because it received a signal from the Operating System.
Signal name :
Signal meaning :
Why the same code passed one IDE, but failed the other????weird...
Duck last edited by
The SIGSEGV is a problem in your code, an indication that something is wrong.
Different behavior may have all kind of reasons, ranging from different builds, different environments, diffferent execution order (including some introduced by the debugging itself) to different timing etc.
unai_i last edited by
To add an hint to the previous reply, try to check your code at locations where you use pointers (if you do so).
You get a SIGSEGV if your application tries to access memory illegally. Some examples are here: http://en.wikipedia.org/wiki/Segmentation_fault#Segmentation.2C_page_fault.2C_and_access_violation
In QtCreator, run the debugger (gdb). When you get the SIGSEGV signal, the debugger will show you where the error is, so you can fix it.
From your description, my best guess is that your program uses uninitialized pointers, which is dangerous, and sometimes causes SIGSEGV.
franku last edited by
When you got the SIGSEGV while debugging, click away the debugger message box and look at the stack with the call history. There you'll find the procedure that was last called (as JKSH wrote).