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Missing typo correction diagnostic in preprocessor conditionals #51598

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@AaronBallman

Description

@AaronBallman
Bugzilla Link 52256
Version trunk
OS Windows NT
CC @zygoloid

Extended Description

Consider the following code, and assume that FOO is not defined:

#ifdef FOO
#elfidef BAR
#endif

In this case, we do not issue any diagnostic about the typo where #elifdef is misspelled as #elfidef because it appears within a preprocessor branch that is discarded.

When scanning for the end of the discarded block, we should consider typo corrections for non-directives to help catch this sort of mistake.

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    bugzillaIssues migrated from bugzillac23clang:diagnosticsNew/improved warning or error message in Clang, but not in clang-tidy or static analyzerenhancementImproving things as opposed to bug fixing, e.g. new or missing feature

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