[PATCH] D75614: [Analyzer][StreamChecker] Check for opened stream before operations.

[Balázs Kéri via Phabricator via cfe-commits]

balazske created this revision.
Herald added subscribers: cfe-commits, martong, Charusso, gamesh411, dkrupp, donat.nagy, Szelethus, mikhail.ramalho, a.sidorin, szepet, baloghadamsoftware, xazax.hun.
Herald added a reviewer: Szelethus.
Herald added a project: clang.

According to documentations, after an `fclose` call any other stream
operations cause undefined behaviour, regardless if the close failed
or not.
This change adds the check for the opened state before all other
(applicable) operations.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75614

Files:
  clang/lib/StaticAnalyzer/Checkers/StreamChecker.cpp
  clang/test/Analysis/stream.c

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