alloca3avr
<alloca.h>: allocate space in the stack
Usage
Functions
void * alloca (size_t __size)
Detailed Description
Function Documentation
void * alloca (size_t __size) [extern]
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.
Releases
6 releases since Debian 8 (Jessie); the text changed 5 times.