[PATCH] D149160: [clang][analyzer] Handle special value AT_FDCWD in affected standard functions

[Balázs Kéri via Phabricator via cfe-commits]

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Some file and directory related functions have an integer file descriptor argument
that can be a valid file descriptor or a special value AT_FDCWD. This value is
relatively often used in open source projects and is usually defined as a negative
number, and the checker reports false warnings (a valid file descriptor is not
negative) if this fix is not included.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149160

Files:
  clang/lib/StaticAnalyzer/Checkers/StdLibraryFunctionsChecker.cpp
  clang/test/Analysis/std-c-library-functions-arg-constraints.c

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