[LLVMbugs] [Bug 16811] New: a static analysis check for properly matched va_start()/va_end() would be useful

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Tue Aug 6 17:18:49 PDT 2013


http://llvm.org/bugs/show_bug.cgi?id=16811

            Bug ID: 16811
           Summary: a static analysis check for properly matched
                    va_start()/va_end() would be useful
           Product: clang
           Version: unspecified
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Static Analyzer
          Assignee: kremenek at apple.com
          Reporter: oohrah at mac.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

>From the OS X man page for va_end:

"Note that each call to va_start() must be matched by a call to va_end(), from
within the same function."

It would be nice if the static analyzer checked if this was done correctly for
every va_start() call and warned about missing or extra calls to va_end().

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