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https://github.com/eclipse-cdt/cdt
synced 2025-09-02 05:03:36 +02:00
57a32fc521
If parsing expression part for an alternative terminates with BacktrackException,
selectFallback() would short-circuit to the longest remaining variant. If that
happens to successfully complete parsing till the end of expression token
sequence, all of remaining variants are discarded, including the first found
alternative which was to parse identifier as template name.
This causes expression() to only consider one branchpoint out of all possible
variants. Allow it to find more variants by scanning through all branchpoints
looking for the alternative with leftmost parsed boundary.
This is probably still not ideal but fixes this common std library construct:
template <typename T>
inline constexpr bool X = true;
template <typename T>
inline constexpr bool Y = true;
template<typename T> bool predicate() {
return X<T> && Y<T>; // CDT finds this one: (X) < (T) > (&&Y<T>)
// Fix it to also consider (X<T>) && (Y<T>)
}
Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=497931
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