[LLVMbugs] [Bug 10358] New: -Wuninitialized false negative for use inside a loop

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10358

           Summary: -Wuninitialized false negative for use inside a loop
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: matthewbg at google.com
                CC: llvmbugs at cs.uiuc.edu


void f(int i);
void g() {
  int j;
  for (int k = 0; k < 10; ++k)
    f(j);
}

Clang doesn't warn about the uninitialized use of 'j'. GCC (4.4.3) says "may be
used uninitialized" at -O0 and "is used uninitialized" at -O2.

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