[LLVMbugs] [Bug 12672] New: False positive for conditional operator

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Wed Apr 25 21:31:24 PDT 2012


             Bug #: 12672
           Summary: False positive for conditional operator
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Windows NT
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Static Analyzer
        AssignedTo: kremenek at apple.com
        ReportedBy: roland at utk.edu
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


#include <stdlib.h>
#include <string.h>
int main(int argc, char** argv)  {
  char *s;
  int a = atoi(argv[1]);
  if (a) {
    s = strdup("test");
  return a ? s[0] : 0;

I get:

test.c:9:3: warning: Undefined or garbage value returned to caller

But because because the if statement and the tertiary operator have the same
condition this shouldn't give a warning.

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