[LLVMbugs] [Bug 20729] New: Explicit base destructor call rejected

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu Aug 21 16:59:32 PDT 2014


            Bug ID: 20729
           Summary: Explicit base destructor call rejected
           Product: clang
           Version: 3.4
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: david_work at me.com
                CC: dgregor at apple.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

#include <new>

struct b {
        virtual ~ b() {}

struct d : b {
        ~ d () {}

int main() {
        d o;
        new( & o ) d;

This is well formed but gets a diagnosis "destructor type 'b' in object
destruction expression does not match the type 'd' of the object being

The most applicable rule is §12.4/13:

… if the object is not of the destructor’s class type and not of a class
derived from the destructor’s class type (including when the destructor is
invoked via a null pointer value), the program has undefined behavior.

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