[Issue 5159] New: Segfault(interpret.c): calling a static function pointer variable in CTFE

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5159

           Summary: Segfault(interpret.c): calling a static function
                    pointer variable in CTFE
           Product: D
           Version: D1 & D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Keywords: ice-on-invalid-code, patch
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: clugdbug at yahoo.com.au


--- Comment #0 from Don <clugdbug at yahoo.com.au> 2010-11-03 13:52:19 PDT ---
It's not yet possible to make a test case which should compile without error.
But this one segfaults on 2.050.
---
int function() bug5159 = function int() { return 27; };
static assert(bug5159());
---

PATCH: interpret.c, CallExp::interpret(), line 2715.

    if (ecall->op == TOKstar)
    {   // Calling a function pointer
        Expression * pe = ((PtrExp*)ecall)->e1;
        if (pe->op == TOKvar) {
            VarDeclaration *vd = ((VarExp
*)((PtrExp*)ecall)->e1)->var->isVarDeclaration();
            if (vd && vd->value && vd->value->op == TOKsymoff)
                fd = ((SymOffExp *)vd->value)->var->isFuncDeclaration();
            else {
-                ecall = vd->value->interpret(istate);
+                ecall = getVarExp(loc, istate, vd);
+                if (ecall == EXP_CANT_INTERPRET)
+                    return ecall;
                if (ecall->op == TOKsymoff)
                        fd = ((SymOffExp *)ecall)->var->isFuncDeclaration();
                }

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