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ICU-861

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Comments added describing possibility of CE buffer overflow during backwards iteration.

X-SVN-Rev: 4702
This commit is contained in:
Syn Wee Quek 2001-05-17 21:34:44 +00:00
parent ebb67d12c9
commit 705737026e
1 changed files with 8 additions and 2 deletions
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10
icu4c/source/i18n/unicode/ucoleitr.h
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@ -142,11 +142,17 @@ ucol_next(UCollationElements *elems, UErrorCode *status);
/**
* Get the ordering priority of the previous collation element in the text.
* A single character may contain more than one collation element.
* Note that internally a stack is used to store buffered collation elements.
* It is very rare that the stack will overflow, however if such a case is
* encountered, the problem can be solved by increasing the size
* UCOL_EXPAND_CE_BUFFER_SIZE in ucol_imp.h.
* @param elems The UCollationElements containing the text.
* @param status A pointer to an UErrorCode to receive any errors.
* @param status A pointer to an UErrorCode to receive any errors. Noteably
* a U_BUFFER_OVERFLOW_ERROR is returned if the internal stack
* buffer has been exhausted.
* @return The previous collation elements ordering, otherwise returns
* NULLORDER if an error has occured or if the start of string has
* been reached
* been reached.
*/
U_CAPI int32_t
ucol_previous(UCollationElements *elems, UErrorCode *status);