gistfile1.txt

#define FORMAT(str) \
{ \
	va_list va; \
	char staticbuf[1024]; \
	char *buf = staticbuf; \
	va_start(va, in); \
	unsigned int need = vsnprintf(buf, sizeof(staticbuf), in, va) + 1; \
	if (need > sizeof(staticbuf)) \
	{ \
		/* staticbuf wasn't large enough, malloc large enough */ \
		buf = (char *) malloc(need); \
		va_start(va,in); \
		vsnprintf(buf, need, in, va); \
	} \
	va_end(va); \
	str = string(buf); \
	/* free if we had to malloc more space */ \
	if (buf != staticbuf) \
		free(buf); \
}

void Logger::Warn(const char *in, ...)
{
	string str;
	FORMAT(str);
	
	// Time
	char sTime[25];
	GetTime(sTime);
	
	char buf[strlen(sTime)+str.length()+11];
	sprintf(buf, "%s WARNING: %s\n", sTime, str.c_str());
	
	PHYSFS_write(m_File, buf, sizeof(buf), 1);

	if (m_UseColors)
		printf("\x1b[%d;1m%s:\x1b[0m ", FG_YELLOW, "WARNING");
	else
		printf("%s: %s", "WARNING", str.c_str());
}

// Problem: works fine when color is disabled, explodes when enabled.