Messages in this thread | | | Date | Wed, 2 Oct 2002 00:51:25 +0200 | From | "J.A. Magallon" <> | Subject | bad function ptrs - is it dangerous ? |
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Hi al...
I have a little question. Let's suppose you have this:
int (*pf)(data *); int f(data*);
so you can:
pf = f; pf(data).
Fine. But what happens if:
void (*pf)(data *); int f(data*);
pf = f; // gcc happily swallows, gcc-3.2 gives a warning. pf(data).
??
In C calling convention, the callee kills the stack so nothing should happen... or it should ?
The (in)famous graphics driver all you know is doing this with the copy_info op for gart...
TIA
-- J.A. Magallon <jamagallon@able.es> \ Software is like sex: werewolf.able.es \ It's better when it's free Mandrake Linux release 9.0 (dolphin) for i586 Linux 2.4.20-pre8-jam1 (gcc 3.2 (Mandrake Linux 9.0 3.2-1mdk)) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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