Bug 23008 – importC: dmd asserts on empty struct or union as global

struct {} a; union {} b; --- ERROR: This is a compiler bug. Please report it via https://issues.dlang.org/enter_bug.cgi with, preferably, a reduced, reproducible example and the information below. DustMite (https://github.com/CyberShadow/DustMite/wiki) can help with the reduction. --- DMD v2.099.1-339-g863fec775 predefs DigitalMars LittleEndian D_Version2 all D_SIMD Posix ELFv1 linux CRuntime_Glibc CppRuntime_Gcc D_InlineAsm_X86_64 X86_64 D_LP64 D_PIC assert D_PreConditions D_PostConditions D_Invariants D_ModuleInfo D_Exceptions D_TypeInfo D_HardFloat binary /home/human/work/result/bin/dmd version v2.099.1-339-g863fec775 config /home/human/work/result/bin/dmd.conf DFLAGS -I/home/human/work/result/bin/../import -L-L/home/human/work/result/bin/../lib -L--export-dynamic -fPIC --- core.exception.AssertError@src/dmd/toobj.d(613): Assertion failure ---------------- ??:? onAssertError [0x7fcc94168622] src/dmd/toobj.d:613 _ZN9toObjFile9ToObjFile5visitEP14VarDeclaration [0x55e7ad4e0af6] src/dmd/declaration.d:1653 _ZN14VarDeclaration6acceptEP7Visitor [0x55e7ad2a9bdb] src/dmd/toobj.d:748 _ZN9toObjFile9ToObjFile5visitEP17AttribDeclaration [0x55e7ad4e0531] ??:? _ZN16ParseTimeVisitorI10ASTCodegenE5visitEP15LinkDeclaration [0x55e7ad4f14e5] src/dmd/attrib.d:434 _ZN15LinkDeclaration6acceptEP7Visitor [0x55e7ad2aa15b] src/dmd/toobj.d:1008 _Z9toObjFileP7Dsymbolb [0x55e7ad2d3831] src/dmd/glue.d:522 _Z10genObjFileP6Moduleb [0x55e7ad4c64a2] src/dmd/glue.d:137 void dmd.glue.generateCodeAndWrite(dmd.dmodule.Module[], const(char)*[], const(char)[], const(char)[], bool, bool, bool, bool, bool) [0x55e7ad2e1d58] src/dmd/mars.d:574 int dmd.mars.tryMain(ulong, const(char)**, ref dmd.globals.Param) [0x55e7ad2e462b] src/dmd/mars.d:958 _Dmain [0x55e7ad2effcf] --- line at current commit: https://github.com/dlang/dmd/blob/863fec775e2dd8b8f4788849d7b8923b70dcf279/src/dmd/toobj.d#L613

@WalterBright created dlang/dmd pull request #14007 "fix Issue 23008 - importC: dmd asserts on empty struct or union as gl…" fixing this issue: - fix Issue 23008 - importC: dmd asserts on empty struct or union as global https://github.com/dlang/dmd/pull/14007

dlang/dmd pull request #14007 "fix Issue 23008 - importC: dmd asserts on empty struct or union as gl…" was merged into master: - e88ae5e540760da54d236d75d1339ee281b78dce by Walter Bright: fix Issue 23008 - importC: dmd asserts on empty struct or union as global https://github.com/dlang/dmd/pull/14007