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MSVC vsnprintf ( in fact _vsnprinft ) returns -1 when the buffer is too short

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fredb
2006-01-10 20:25:46 +00:00
parent 795c079af0
commit 36e7684d9a
1 changed files with 2 additions and 1 deletions
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simgear/nasal/lib.c
+2 -1
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@@ -228,13 +228,14 @@ static naRef f_die(naContext c, naRef me, int argc, naRef* args)
// until it fits. Returned buffer should be freed by the caller. // until it fits. Returned buffer should be freed by the caller.
char* dosprintf(char* f, ...) char* dosprintf(char* f, ...)
{ {
int l;
char* buf; char* buf;
va_list va; va_list va;
int len = 16; int len = 16;
while(1) { while(1) {
buf = naAlloc(len); buf = naAlloc(len);
va_start(va, f); va_start(va, f);
if(vsnprintf(buf, len, f, va) < len) { if((l=vsnprintf(buf, len, f, va)) < len && l!=-1) {
va_end(va); va_end(va);
return buf; return buf;
} }