Table of Contentsalloca - memory allocator #include <stdlib.h> void *alloca( size_t size);
The alloca function allocates size bytes of space in the stack frame of the caller. This temporary space is automatically freed on return. The alloca function returns a pointer to the beginning of the allocated space. If the allocation failed, a NULL pointer is returned. There is evidence that the alloca function appears in 32v, pwb, pwb.2, 3bsd, and 4bsd. There is a man page for it in BSD 4.3. Linux uses the GNU version. The alloca function is machine dependent. brk(2), pagesize(2), calloc(3), malloc(3), realloc(3)
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