[LLVMbugs] [Bug 21331] New: weird constant evaluation for addition of a constant to a pointer cast from int

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21331

            Bug ID: 21331
           Summary: weird constant evaluation for addition of a constant
                    to a pointer cast from int
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: richard-llvm at metafoo.co.uk
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

On a 32-bit system:

  char *p = (char*)123 + 0x1234500000000LL;

... compiles to:

@p = global i8* inttoptr (i64 320254236426363 to i8*), align 4

... which looks like we have the wrong APValue representation internally. I'm
not sure if this can manifest as incorrect behaviour but it looks suspicious.

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