[Issue 17275] New: [REG 2.072.0] AssertError at declaration.d(2121): Assertion failure

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17275

          Issue ID: 17275
           Summary: [REG 2.072.0] AssertError at declaration.d(2121):
                    Assertion failure
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: ibuclaw at gdcproject.org

Introduced by: https://github.com/dlang/dmd/pull/6065

Reduced:
---
struct DSO
{
    inout(ModuleGroup) moduleGroup() { }
}

struct ThreadDSO
{
    DSO* _pdso;
    void[] _tlsRange;
}
---

Causes assertion failure:
```
sections.d(3): Error: undefined identifier 'ModuleGroup', did you mean function
'moduleGroup'?
sections.d(3): Error: inout on return means inout must be on a parameter as
well for inout(ModuleGroup)()
core.exception.AssertError at declaration.d(2121): Assertion failure
----------------
??:? _d_assert [0x705b70]
??:? void ddmd.declaration.__assert(int) [0x52b962]
??:? bool VarDeclaration::isOverlappedWith(VarDeclaration*) [0x52a0f5]
??:? bool AggregateDeclaration::checkOverlappedFields() [0x4f71c8]
??:? void StructDeclaration::finalizeSize() [0x55366e]
??:? bool AggregateDeclaration::determineSize(Loc) [0x4f6fb9]
??:? void AggregateDeclaration::semantic2(Scope*) [0x4f6995]
??:? void Module::semantic2(Scope*) [0x54899d]
??:? int ddmd.mars.tryMain(ulong, const(char)**) [0x5cf4b4]
??:? _Dmain [0x5d0222]
??:? _D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZ9__lambda1MFZv [0x707a17]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).tryExec(scope void delegate()) [0x707943]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).runAll() [0x7079bc]
??:? void rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).tryExec(scope void delegate()) [0x707943]
??:? _d_run_main [0x7078a7]
??:? main [0x5d09c3]
??:? __libc_start_main [0xd137882f]
```

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