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alloca
Langue: en
Version: 318439 (ubuntu - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
<alloca.h>: Allocate space in the stack -Functions
void * alloca (size_t __size)
Detailed Description
Function Documentation
void* alloca (size_t __size)
Allocate __size bytes of space in the stack frame of the caller.
This temporary space is automatically freed when the function that called alloca() returns to its caller. Avr-libc defines the alloca() as a macro, which is translated into the inlined __builtin_alloca() function. The fact that the code is inlined, means that it is impossible to take the address of this function, or to change its behaviour by linking with a different library.
Returns:
- alloca() returns a pointer to the beginning of the allocated space. If the allocation causes stack overflow, program behaviour is undefined.
Warning:
- Avoid use alloca() inside the list of arguments of a function call.
Author
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