[Issue 20171] New: [REG 2.086.0] Calling public function from the destructor segfaults

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20171

          Issue ID: 20171
           Summary: [REG 2.086.0]  Calling public function from the
                    destructor segfaults
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: belka at caraus.de

This fascinating code segfaults:

struct Range
{
}

struct Array(T)
{
    private int* data;

    invariant (this.data is null);

    ~this()
    {
        reserve();
    }

    void reserve()
    {
        const byteSize = 0;
    }

    bool opEquals(R)(R that) const
    if (is(R == Range))
    {
        assert(false);
    }
}

unittest
{
    auto v = Array!int();
}

dmd -unittest -main array.d

./array(_D4core7runtime18runModuleUnitTestsUZ19unittestSegvHandlerUNbiPSQCk3sys5posix6signal9siginfo_tPvZv+0x38)[0x4340fc]
/lib64/libpthread.so.0(+0x113b0)[0x7ff3920d23b0]
./array(_D5array__T5ArrayTiZQj12__invariant3MxFNaNbNiNfZv+0x4)[0x42fbd0]
./array(_D5array__T5ArrayTiZQj11__invariantMxFNaNbNiNfZv+0x9)[0x42fc81]
./array(_D5array__T5ArrayTiZQj7reserveMFNaNbNiNfZv+0x1f)[0x42fc27]
./array(_D5array__T5ArrayTiZQj6__dtorMFNaNbNiNfZv+0x1a)[0x42fc06]
./array(_D5array17__unittest_L28_C1FZv+0x19)[0x42fbc9]
./array(_D5array9__modtestFZv+0x9)[0x42fc8d]
./array(_D4core7runtime18runModuleUnitTestsUZ14__foreachbody2MFPS6object10ModuleInfoZi+0x44)[0x43415c]
./array(_D6object10ModuleInfo7opApplyFMDFPSQBhQBdZiZ9__lambda2MFyPSQCfQCbZi+0x2f)[0x4330eb]
./array(_D2rt5minfo17moduleinfos_applyFMDFyPS6object10ModuleInfoZiZ14__foreachbody2MFKSQCz19sections_elf_shared3DSOZi+0x5b)[0x43819b]
./array(_D2rt19sections_elf_shared3DSO7opApplyFMDFKSQBqQBqQyZiZi+0x45)[0x4386f5]
./array(_D2rt5minfo17moduleinfos_applyFMDFyPS6object10ModuleInfoZiZi+0x22)[0x438122]
./array(_D6object10ModuleInfo7opApplyFMDFPSQBhQBdZiZi+0x22)[0x4330b6]
./array(runModuleUnitTests+0x13e)[0x433f2e]
./array(_D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZv+0x25)[0x430751]
./array(_D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ7tryExecMFMDFZvZv+0x24)[0x4306dc]
./array(_d_run_main+0x2cb)[0x430643]
./array(main+0x10)[0x42fca4]
/lib64/libc.so.6(__libc_start_main+0xf0)[0x7ff3913d97d0]
./array(_start+0x29)[0x42fa79]
Segmentation fault (core dumped)

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