When checking printf-arguments for functions with '__attribute__ ((format (printf, X, Y)))'
set HasVAListArg to true when 'Y' is 0 (i.e., ignore the data arguments).

This fixes <rdar://problem/6623513>.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65642 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed