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Fix PyUnicode_Resize() for compact string: leave the string unchanged on error

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Fix also PyUnicode_Resize() doc
This commit is contained in:
Victor Stinner 2011-12-12 13:08:33 +01:00
parent 521dfb02dd
commit b0a82a6a7f
2 changed files with 14 additions and 28 deletions
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13
Include/unicodeobject.h
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@ -768,18 +768,15 @@ PyAPI_FUNC(int) PyUnicode_WriteChar(
PyAPI_FUNC(Py_UNICODE) PyUnicode_GetMax(void);
#endif
/* Resize an Unicode object allocated by the legacy API (e.g.
PyUnicode_FromUnicode). Unicode objects allocated by the new API (e.g.
PyUnicode_New) cannot be resized by this function.
The length is a number of characters (and not the number of Py_UNICODE characters).
/* Resize an Unicode object. The length is the number of characters, except
if the kind of the string is PyUnicode_WCHAR_KIND: in this case, the length
is the number of Py_UNICODE characters.
*unicode is modified to point to the new (resized) object and 0
returned on success.
If the refcount on the object is 1, the function resizes the string in
place, which is usually faster than allocating a new string (and copy
characters).
Try to resize the string in place (which is usually faster than allocating
a new string and copy characters), or create a new string.
Error handling is implemented as follows: an exception is set, -1
is returned and *unicode left untouched. */