VC7 (VS2002) debugging std::string more than 15 characters garbled problem

VC7 (VS2002) debugging std::string more than 15 characters garbled problem

VC8 (VS2005) does not have this problem.

std::string str = "1234567890123456";
Const char* p = str.c_str ();
When debugging: The value of STR is garbled, p is the correct value.

May be a VS2002 bug, the root cause may be:
Std::string not more than 15 words characters in _bx.buf, otherwise guaranteed in the _bx.ptr.
VC7 always read the _bx.buf when debugging.

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VC7 (VS2002) debugging std::string more than 15 characters garbled problem