Details
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Bug
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Resolution: Done
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Not Evaluated
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Qt Creator 4.9.0-beta2
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None
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41da97fb2cfb88baa7872d370e1e9665c85432d2
Description
If you define a string with a custom allocator, the dumper shows garbage instead of the string.
On some occasions (could not figure out an exact example), the basic_string member is expandable, and if you expand it, the debugger hangs forever (must be aborted twice).
#include <string>
namespace ns {
template<class T>
struct alloc
{
public:
typedef size_t size_type;
typedef T* pointer;
typedef const T* const_pointer;
typedef T value_type;
typedef T& reference;
typedef const T& const_reference;
typedef ptrdiff_t difference_type;
inline bool operator==(const alloc<T>&) const { return true; }
inline bool operator!=(const alloc<T>&) const { return false; }
pointer allocate(size_t n) { return (pointer)allocator.allocate(n*sizeof(T)); }
void deallocate(pointer p, size_t n) { allocator.deallocate(p, n); }
std::allocator<T> allocator;
};
using allocat = alloc<char>;
class string : public std::basic_string<char, std::char_traits<char>, allocat>
{
using base = std::basic_string<char, std::char_traits<char>, allocat>;
using base::basic_string;
};
}
int main()
{
std::string str1("test");
ns::string str2("test");
return 0; // Break here
}