1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <strstream> 11 12 // class strstreambuf 13 14 // strstreambuf(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*)); 15 16 #include <strstream> 17 #include <cassert> 18 19 int called = 0; 20 21 void* my_alloc(std::size_t n) 22 { 23 static char buf[10000]; 24 ++called; 25 return buf; 26 } 27 28 void my_free(void*) 29 { 30 ++called; 31 } 32 33 struct test 34 : std::strstreambuf 35 { 36 test(void* (*palloc_arg)(size_t), void (*pfree_arg)(void*)) 37 : std::strstreambuf(palloc_arg, pfree_arg) {} 38 virtual int_type overflow(int_type c) 39 {return std::strstreambuf::overflow(c);} 40 }; 41 42 int main() 43 { 44 { 45 test s(my_alloc, my_free); 46 assert(called == 0); 47 s.overflow('a'); 48 assert(called == 1); 49 } 50 assert(called == 2); 51 } 52
