mirror of
https://github.com/netwide-assembler/nasm.git
synced 2025-02-17 17:19:35 +08:00
2850da733d
printf("%d", <size_t>) is invalid. As this is for legacy compilers,
don't rely on %zu but rather cast to unsigned long long.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
47 lines
990 B
C
47 lines
990 B
C
/*
|
|
* vsnprintf()
|
|
*
|
|
* Poor substitute for a real vsnprintf() function for systems
|
|
* that don't have them...
|
|
*/
|
|
|
|
#include "compiler.h"
|
|
|
|
|
|
#include "nasmlib.h"
|
|
#include "error.h"
|
|
|
|
#if !defined(HAVE_VSNPRINTF) && !defined(HAVE__VSNPRINTF)
|
|
|
|
#define BUFFER_SIZE 65536 /* Bigger than any string we might print... */
|
|
|
|
static char snprintf_buffer[BUFFER_SIZE];
|
|
|
|
int vsnprintf(char *str, size_t size, const char *format, va_list ap)
|
|
{
|
|
int rv, bytes;
|
|
|
|
if (size > BUFFER_SIZE) {
|
|
nasm_panic("vsnprintf: size (%llu) > BUFFER_SIZE (%d)",
|
|
(unsigned long long)size, BUFFER_SIZE);
|
|
size = BUFFER_SIZE;
|
|
}
|
|
|
|
rv = vsprintf(snprintf_buffer, format, ap);
|
|
if (rv >= BUFFER_SIZE)
|
|
nasm_panic("vsnprintf buffer overflow");
|
|
|
|
if (size > 0) {
|
|
if ((size_t)rv < size-1)
|
|
bytes = rv;
|
|
else
|
|
bytes = size-1;
|
|
memcpy(str, snprintf_buffer, bytes);
|
|
str[bytes] = '\0';
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
#endif
|