问题
int* foo = new int[10];
foo = NULL;
sleep(60);
Instrument is not finding any leak in above code, how do I use Instrument tool to find C or C++ code leaks. I have stack overflowed most of the explanation is based on objective C codes...
回答1:
The issue is that compiler will optimize out the call to new in the following code fragment:
int* foo = new int[10];
foo = NULL;
sleep(60);
as it's smart enough to know that it's not being used. If you add code to use foo then compiler won't do this and you should see the leak you are expecting:
int* foo = new int[10];
foo[3] = 23;
foo[8] = 45;
printf("%d %d\n", foo[3], foo[8]);
foo = NULL;
sleep(60);
来源：https://stackoverflow.com/questions/14811359/how-to-find-c-or-c-code-leaks-using-instruments-leaks-xcode