[llvm-bugs] [Bug 32837] New: virtual destructor not called

via llvm-bugs llvm-bugs at lists.llvm.org
Thu Apr 27 23:58:52 PDT 2017


            Bug ID: 32837
           Summary: virtual destructor not called
           Product: clang
           Version: 4.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: programmerjake at gmail.com
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org

the S2::~S2() is not called in the following code. This is easiest to see by
compiling with -O because main is optimized to return 0 and do nothing else.

struct S
    virtual ~S()

struct S2 : public S
    virtual ~S2()
        __builtin_printf("never reached\n");

int main()
    delete [] static_cast<S *>(new S2[1]);

clang version 4.0.0 (tags/RELEASE_400/final 299826)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/compiler-explorer/clang-4.0.0/bin

See: https://godbolt.org/g/SlDwMr

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