gh-154781: Zero the in_wstr() buffer in curses - #154782
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winnwstr() only writes the terminating null when it stored at least one character, so with n of 0 the result was read from uninitialized memory. Use PyMem_Calloc, like in_wchstr() already does.
| PyMem_Free(buf); | ||
| return Py_GetConstant(Py_CONSTANT_EMPTY_STR); | ||
| } | ||
| PyObject *res = PyUnicode_FromWideChar(buf, -1); |
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Should not this be enough?
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| PyObject *res = PyUnicode_FromWideChar(buf, rtn); |
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winnwstr()only writes the terminating null when it stored at least one character, soin_wstr(y, x, 0)read the result from uninitialized memory and usually raisedValueError: character U+xxxxxxxx is not in range. UsePyMem_Calloc, likein_wchstr()already does since gh-152503.
in_wstr()is new in 3.16, so there is no NEWS entry.