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Mem allocation with function pointers?

Kranomano · 2001-04-14T22:27:31

I just posted this, but it didnt appear, so I'll try again... This problem has really been bugging me. Im making a scripting engine, and to do it I need what I guess you could call a function binding interface, something I can use to call functions by name. When I try to bind more than 1 function, the thing crashes, and I assume its a memmory problem. Heres the code: #include <string.h> #include <malloc.h> struct func_t { void (*fPtr)(); char *cmd; }; func_t *Funcs; unsigned int nFuncs = 0; void CallFunc(char *cmd) { for(unsigned int i = 0; i < nFuncs; i++) { if(strcmpi(cmd, Funcs[i].cmd) == 0) { Funcs[i].fPtr(); return; } } } void BindFunc(void (*func)(), char *str) { nFuncs++; Funcs = new func_t; Funcs[nFuncs-1].fPtr = (void (*)(void)) malloc(sizeof(func)); Funcs[nFuncs-1].fPtr = func; Funcs[nFuncs-1].cmd = new char[strlen(str)]; strcpy(Funcs[nFuncs-1].cmd, str); } More specificly, one of those "performed an illegal opperation" windows pops up. The details: "SCRIPTING caused an invalid page fault in module SCRIPTING.EXE at 0167:00404cb0." I didnt think I had to use malloc there, but I thought it might fix it. It obviously didnt, or I wouldnt be posting. Thanks. Edited by - kranomano on April 14, 2001 9:04:08 PM

General and Gameplay Programming Programming

Started by Kranomano April 14, 2001 07:54 PM

10 comments, last by Kranomano 23 years, 10 months ago

Null and Void

1,088

April 14, 2001 10:15 PM

I don''t see why. I find them pretty useful. There are tons of them in my current project. It makes things easier to "make dynamic" and adaptable to what I (or other people who use my engine) want to do with it.

"Finger to spiritual emptiness underlying everything." -- How a C manual referred to a "pointer to void." --Things People Said