Check for non-zero buffer size in xSnprintf

BenBE · BenBE · commit bb7a922f8435 · 2024-08-13T09:29:17.000+02:00
diff --git a/XUtils.c b/XUtils.c
@@ -238,6 +238,8 @@ int xAsprintf(char** strp, const char* fmt, ...) {
 }
 
 int xSnprintf(char* buf, size_t len, const char* fmt, ...) {
+   assert(len > 0);
+
    va_list vl;
    va_start(vl, fmt);
    int n = vsnprintf(buf, len, fmt, vl);

Original file line number	Diff line number	Diff line change
`@@ -238,6 +238,8 @@ int xAsprintf(char** strp, const char* fmt, ...) {`
`238`	`238`	`}`
`239`	`239`
`240`	`240`	`int xSnprintf(char* buf, size_t len, const char* fmt, ...) {`
	`241`	`+ assert(len > 0);`
	`242`	`+`
`241`	`243`	`va_list vl;`
`242`	`244`	`va_start(vl, fmt);`
`243`	`245`	`int n = vsnprintf(buf, len, fmt, vl);`