Edit Question - KnowledgeHub

Title Body

Is there a way to know and output the stack size needed by a function at compile time in C ? Here is what I would like to know : Let's take some function : void foo(int a) { char c[5]; char * s; //do something return; } When compiling this function, I would like to know how much stack space it will consume whent it is called. This might be useful to detect the on stack declaration of a structure hiding a big buffer. I am looking for something that would print something like this : file foo.c : function foo stack usage is n bytes Is there a way not to look at the generated assembly to know that ? Or a limit that can be set for the compiler ? Update : I am not trying to avoid runtime stack overflow for a given process, I am looking for a way to find before runtime, if a function stack usage, as determined by the compiler, is available as an output of the compilation process. Let's put it another way : is it possible to know the size of all the objects local to a function ? I guess compiler optimization won't be my friend, because some variable will disappear but a superior limit is fine.

Tags (comma-separated) Cancel