Re: query on execution of inactive statement in gdb run

[Matthew Woehlke]

Prakash Barnwal wrote:
> I want to run gdb and wants to execute a particular line of code which 
> is not feasible in normal flow ;
>
> main(){
> int i = 0;
>
> printf ("i=== %d\n",i);
> if(0){
>   printf("I am here\n");
> }
> In this case if(0) will always be false but I want to execute line 
> (printf("I am here\n");) in gdb run. Could you please help me how to do 
> this
> ?

You can't. If your compiler is at all non-braindead, code inside a 
conditional that is always false (e.g. 'if(0)') is omitted from the 
final output.

You might be able to work around this by using 'if(foo)' where 'foo' is 
a variable that is normally 0 but might possibly become non-zero. A very 
safe way might be 'if(getenv("MY_FOO"))' (which will change execution 
normally in the very rare condition that you set MY_FOO in the environment.

--
Matthew
A KWin crash is like a Finite Improbability Generator... only instead of 
undergarments, all my windows move 4 pixels to the right.