Os X Yosemite Bug Is Causing Memory Leaks For Mac

Mac OS X comes with a tool called leaks. You can use this tool to determine the allocated memory buffers inside a program to which no existing pointer (anywhere in the stack or registers) points. This is useful to determine possible leaks in Firefox, for example. Here are some tips on how to use this tool more effectively.

1. Os X Yosemite Bug Is Causing Memory Leaks For Mac Free

Os X Yosemite Bug Is Causing Memory Leaks For Mac Free

Getting stack traces for allocation points leaks is capable of showing the stack trace where a leaked memory buffer was allocated. To get stack reports, run Firefox with the MallocStackLogging environment variable set. Avoiding false positives A lot of places in Gecko, we store masked pointers to allocated buffers. For example, we might have code like this: Type. foo = new Foo; foo = reinterpretcast (staticcast (foo  0x1)); // Later on, when we want to use foo Type. real = reinterpretcast (staticcast (foo) & 0x1); In the above example, we can use the least significant bit to store a flag, for example. Doing this causes the memory address stored in foo to not be mappable to any allocated block. Unfortunately, leaks is not smart to detect these types of allocations, so you can use the -exclude argument to ask it to ignore some allocations.