ObjFW  Diff

		if (ctx->lengthModifier != LengthModifierNone)
			return false;

		ctx->subformat[ctx->subformatLen - 1] = 's';

		{
			char buffer[5];
			size_t len = of_string_utf8_encode(
			    va_arg(ctx->arguments, OFUnichar), buffer);

			if (len == 0)
				return false;

			buffer[len] = 0;
			tmpLen = asprintf(&tmp, ctx->subformat, buffer);
		}

		break;
	case 'S':
		if (ctx->lengthModifier != LengthModifierNone)
			return false;

		ctx->subformat[ctx->subformatLen - 1] = 's';

		{
			const OFUnichar *arg =
			    va_arg(ctx->arguments, const OFUnichar *);
			size_t j, len = of_string_utf32_length(arg);
			char *buffer;

			if (SIZE_MAX / 4 < len || (SIZE_MAX / 4) - len < 1)
				return false;

			if ((buffer = malloc((len * 4) + 1)) == NULL)
				return false;

			j = 0;
			for (size_t i = 0; i < len; i++) {
				size_t clen = of_string_utf8_encode(arg[i],
				    buffer + j);

				if (clen == 0) {
					free(buffer);
					return false;
				}