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e95c912928
In r251026 (aka 3fe34694f0990d1d649711ede0326497f8a849dc, "C/C++: show pertinent open token when missing a close token") I copied part of cp_parser_error into cp_parser_required_error, leading to duplication of code. This patch eliminates this duplication by merging the two copies of the code into a new cp_parser_error_1 subroutine. Doing so removes an indentation level, making the patch appear to have more churn than it really does. The patch also undoes the change to g++.dg/parse/pragma2.C, as the old behavior is restored. From-SVN: r253686
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