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#1
May 30th, 2006, 08:37 PM
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Xcode 2.3 help
Hi
I'm using xcode 2.3 on OS 10.4.6 and the GDB to work with a project written in c++ the GDB runs fine, except it doesn't stop at my breakpoints anyone know why this might be?
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#2
May 30th, 2006, 08:45 PM
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yes, a known GDB bug. if you insert these lines as the first lines in your functions, it should start working:
cpp Code:
It's one of those long bugs I just wish someone would get around to fixing.
__________________
~James [Not currently seeking freelance work] Like philosophy or interested in spirituality? Philosophorum. Game Dev Experts Forums Foresight Linux - Because your desktop should be cool! Linux FAQ FedoraFAQ UbuntuGuide Last edited by LinuxPenguin : May 30th, 2006 at 08:48 PM.
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#3
May 31st, 2006, 02:01 PM
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I tried inserrting said code, here's a sample of where I placed it
Code:
#ifdef DEBUG
asm("nop");
#endif
using namespace std;
class EquationRef {
private:
string eq_unsplit;
vector <float> split_values; //a,b,c,d
int dimensions;
string half[2];
this is in a header file it doesn't work
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#4
May 31st, 2006, 02:09 PM
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I should mention that this is written in C++
so, I tried placing it at the begining of the methods where the breakpoints were this didn't work either
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#5
May 31st, 2006, 03:02 PM
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Yes, it should be placed at the beginning of the methods. You did do a full rebuild after changing this, right?
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#6
May 31st, 2006, 04:03 PM
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yes
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#7
May 31st, 2006, 04:05 PM
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I don't use Xcode, so i was presuming it defined DEBUG. At the top of the file add this
#ifndef DEBUG #define DEBUG #endif
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#8
May 31st, 2006, 04:50 PM
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it didn't work
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#9
May 31st, 2006, 04:55 PM
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How are you setting your breakpoints now?
you should be doing them functionlabel+1 the +1 is critical.
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#10
May 31st, 2006, 05:24 PM
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I'm clicking in the margin on the line, xcode sets a breakpoint
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#11
May 31st, 2006, 05:30 PM
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Oh right, I got the impression you were using GDB manually. Hrm, not got a lot of a clue about what might be causing that. Usually just that nop switch fixes most things. How odd...
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#12
May 31st, 2006, 05:37 PM
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how do I use GDB manually?
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#13
May 31st, 2006, 05:51 PM
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you compile the file with the -gstabs parameter
$ gcc -Wall -gstabs file.c -o file.o $ gdb file.o presumably in debug mode the compiler enables gstabs anyway, so if you just go to find the output binary and run gdb against that. Bear in mind it isn't particularly easy, nowhere near as much so as in xcode. One thing to look at is making sure that the point you're trying to break at IS being reached. try using debug output statements to confirm that. That's all I can think if it's not the nop problem...
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