[PATCH] D15636: Reduce false positives in printf/scanf format checker

[Andy Gibbs via cfe-commits]

AndyG created this revision.
AndyG added a reviewer: cfe-commits.

The printf/scanf format checker is a little over-zealous in handling the conditional operator.  This patch reduces work by not checking code-paths that are never used and reduces false positives regarding uncovered arguments, for example in the code fragment:

printf(minimal ? "%i\n" : "%i: %s\n", code, msg);

http://reviews.llvm.org/D15636

Files:
  include/clang/Sema/Sema.h
  lib/Sema/SemaChecking.cpp
  test/Sema/format-strings.c

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