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[Bug preprocessor/28521] New: -E output incorrectly concatenates tokens into trigraphs

gcc -E on:

#define z ?
?z(

emits:
??(

This won't lex correctly when trigraphs are enabled.

-Chris


-- 
           Summary: -E output incorrectly concatenates tokens into trigraphs
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: preprocessor
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sabre at nondot dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28521
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