[LLVMbugs] [Bug 4386] New: Constant evaluation doesn' t handle converting the address of a weak global to a boolean correctly

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4386

           Summary: Constant evaluation doesn't handle converting the
                    address of a weak global to a boolean correctly
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Semantic Analyzer
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: sharparrow1 at yahoo.com
                CC: llvmbugs at cs.uiuc.edu


Testcase:
__attribute((weak)) int foo();
int a = !foo;

clang currently evaluates "!foo" to zero; it should give an error.

I'm not sure how this should end up working with the following case:
int s(); int a = s == 0; int s() __attribute((weak));


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