ObjFW  Diff

		}

		i += clen;
	}

	@try {
		nstr = [self allocMemoryWithSize: nlen + 1];
	} @catch (OFException *e) {
		[self freeMemory: ustr];
		@throw e;
	}

	j = 0;

	for (i = 0; i < ulen; i++) {

		if (memcmp(string + i, str_c, str_len))
			continue;

		@try {
			tmp = [self resizeMemory: tmp
					  toSize: tmp_len + i - last +
						  repl_len + 1];
		} @catch (OFException *e) {
			[self freeMemory: tmp];
			@throw e;
		}
		memcpy(tmp + tmp_len, string + last, i - last);
		memcpy(tmp + tmp_len + i - last, repl_c, repl_len);
		tmp_len += i - last + repl_len;
		i += str_len - 1;
		last = i + 1;
	}

	@try {
		tmp = [self resizeMemory: tmp
				  toSize: tmp_len + length - last + 1];
	} @catch (OFException *e) {
		[self freeMemory: tmp];
		@throw e;
	}
	memcpy(tmp + tmp_len, string + last, length - last);
	tmp_len += length - last;
	tmp[tmp_len] = 0;