1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // UNSUPPORTED: 32-bit-pointer
10 // REQUIRES: large_tests
11 
12 // Test that tellp() does not break the stringstream after INT_MAX, due to use
13 // of pbump() that accept int.
14 
15 #include <cassert>
16 #include <climits>
17 #include <sstream>
18 #include <string>
19 
20 int main(int, char**) {
21   std::stringstream ss;
22   std::string payload(INT_MAX - 1, '\0');
23 
24   ss.write(payload.data(), payload.size());
25   assert(ss.tellp() == INT_MAX - 1);
26 
27   ss.write("a", 1);
28   assert(ss.tellp() == INT_MAX);
29 
30   ss.write("b", 1);
31   assert(ss.tellp() == INT_MAX + 1ULL);
32   // it fails only after previous tellp() corrupts the internal field with int
33   // overflow
34   assert(ss.tellp() == INT_MAX + 1ULL);
35 
36   return 0;
37 }
38