[LLVMbugs] [Bug 4351] New: Compile-time constants with comparisons of function addresses cannot be determined

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Tue Jun 9 11:01:48 PDT 2009


http://llvm.org/bugs/show_bug.cgi?id=4351

           Summary: Compile-time constants with comparisons of function
                    addresses cannot be determined
           Product: clang
           Version: unspecified
          Platform: PC
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Semantic Analyzer
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: ed at 80386.nl
                CC: llvmbugs at cs.uiuc.edu
            Blocks: 3696


Clang chokes on the following piece of code:

void
foo(void)
{
}

int p = (foo == (void *)0) ? 1 : 2;

test.c:6:9: error: initializer element is not a compile-time constant
int p = (foo == (void *)0) ? 1 : 2;
        ^~~~~~~~~~~~~~~~~~~~~~~~~~
1 diagnostic generated.

I agree, the code is quite silly, but I'm running into pieces of kernel source
that use this.


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