Bug 24271 – dmd exits with -4 on dub release (not sure what causes error, but have minimal repro code)

Created attachment 1902 Full "project" including dub.json Having a file with this piece of code in sources crashes compiler with -4 exit code. Reduced with dustmite. Names and imports don't matter (import std; crashes also). ------------------------------------------------ import std.math: sin, acos; struct ErrorStruct { float[] data; this(float[] vals...) { data = [vals[0]]; } ErrorStruct doMath(double a) { double d; float hth = acos(d); float ra = sin(-a * hth); float rb = a * hth; return ErrorStruct(ra + rb); } } ------------------------------------------------ Also I'm sorry about issue name but I genuenly have no idea why it does that here

You need to compile -O to get the dmd SIGILL. --- Program received signal SIGILL, Illegal instruction. 0x000055555596f8c6 in comsub(CodeBuilder&, elem*, unsigned int*) () Missing separate debuginfos, use: dnf debuginfo-install dmd-2.104.0-0.x86_64 (gdb) bt #0 0x000055555596f8c6 in comsub(CodeBuilder&, elem*, unsigned int*) () #1 0x000055555596df78 in codelem(CodeBuilder&, elem*, unsigned int*, unsigned int) () #2 0x00005555559b6893 in orthxmm(CodeBuilder&, elem*, unsigned int*) () #3 0x000055555596e022 in codelem(CodeBuilder&, elem*, unsigned int*, unsigned int) () #4 0x00005555559b3e6d in xmmcnvt(CodeBuilder&, elem*, unsigned int*) () #5 0x000055555596e022 in codelem(CodeBuilder&, elem*, unsigned int*, unsigned int) () #6 0x000055555597986d in scodelem(CodeBuilder&, elem*, unsigned int*, unsigned int, bool) () #7 0x00005555559af218 in xmmeq(CodeBuilder&, elem*, unsigned int, elem*, elem*, unsigned int*) () #8 0x000055555596e022 in codelem(CodeBuilder&, elem*, unsigned int*, unsigned int) () --Type <RET> for more, q to quit, c to continue without paging-- #9 0x00005555559c3abb in outblkexitcode(CodeBuilder&, block*, int&, char const*, Symbol**, unsigned int) () #10 0x00005555559d5be1 in blcodgen(block*) () #11 0x00005555559cd17d in codgen(Symbol*) () #12 0x00005555559e69ab in writefunc2(Symbol*) () #13 0x00005555557d2634 in toObjFile::ToObjFile::visit(FuncDeclaration*) () #14 0x00005555557d3961 in toObjFile::ToObjFile::visit(StructDeclaration*) () #15 0x00005555558d688e in genObjFile(Module*, bool) () #16 0x00005555558d2cba in dmd.glue.generateCodeAndWrite(dmd.dmodule.Module[], const(char)*[], const(char)[], const(char)[], bool, bool, bool, bool, bool) () #17 0x00005555558f5e08 in dmd.mars.tryMain(ulong, const(char)**, ref dmd.globals.Param) () #18 0x00005555558ff801 in D main () ---

https://run.dlang.io/ with `-c -O` gives: Up to 2.096.1: Success and no output Since 2.097.2: Status -4 and no output I get a different trace with DMD v2.106.0-rc.1-90-g16426601d6-dirty and `-O` on Linux nmt-pc 6.2.0-26-generic #26~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Jul 13 16:27:29 UTC 2 x86_64 x86_64 x86_64 GNU/Linux: core.exception.AssertError@src/dmd/backend/cgcod.d(2282): Assertion failure ---------------- ??:? _d_assertp [0x5595078b0ce4] src/dmd/backend/cgcod.d:2282 nothrow @trusted void dmd.backend.cgcod.comsub(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, ref uint) [0x55950781cee7] src/dmd/backend/cgcod.d:2677 nothrow @trusted void dmd.backend.cgcod.codelem(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*, uint) [0x55950781d5b4] src/dmd/backend/cgxmm.d:211 nothrow @trusted void dmd.backend.cgxmm.orthxmm(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*) [0x5595078146a6] src/dmd/backend/cod2.d:918 nothrow @trusted void dmd.backend.cod2.cdmul(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*) [0x55950782fc22] src/dmd/backend/cgcod.d:2717 nothrow @trusted void dmd.backend.cgcod.codelem(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*, uint) [0x55950781d805] src/dmd/backend/cgxmm.d:490 nothrow @trusted void dmd.backend.cgxmm.xmmcnvt(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*) [0x55950781501f] src/dmd/backend/cod4.d:3419 nothrow @trusted void dmd.backend.cod4.cdcnvt(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*) [0x5595077f0ee7] src/dmd/backend/cgcod.d:2717 nothrow @trusted void dmd.backend.cgcod.codelem(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*, uint) [0x55950781d805] src/dmd/backend/cgcod.d:2847 nothrow @trusted void dmd.backend.cgcod.scodelem(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*, uint, bool) [0x55950781dc5d] src/dmd/backend/cgxmm.d:302 nothrow @trusted void dmd.backend.cgxmm.xmmeq(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint, dmd.backend.el.elem*, dmd.backend.el.elem*, uint*) [0x5595078149fc] src/dmd/backend/cod4.d:371 nothrow @trusted void dmd.backend.cod4.cdeq(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*) [0x5595077e5c4a] src/dmd/backend/cgcod.d:2717 nothrow @trusted void dmd.backend.cgcod.codelem(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*, uint) [0x55950781d805] src/dmd/backend/cgen.d:199 nothrow @trusted void dmd.backend.cgen.gencodelem(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.el.elem*, uint*, bool) [0x559507869227] src/dmd/backend/cod3.d:957 nothrow @trusted void dmd.backend.cod3.outblkexitcode(ref dmd.backend.codebuilder.CodeBuilder, dmd.backend.cc.block*, ref int, const(char)*, dmd.backend.cc.Symbol**, const(uint)) [0x5595078406e5] src/dmd/backend/cgcod.d:1439 nothrow @trusted void dmd.backend.cgcod.blcodgen(dmd.backend.cc.block*) [0x55950781b60b] src/dmd/backend/cgcod.d:270 nothrow @trusted void dmd.backend.cgcod.codgen(dmd.backend.cc.Symbol*) [0x559507818cf8] src/dmd/backend/dout.d:1030 nothrow @trusted void dmd.backend.dout.writefunc2(dmd.backend.cc.Symbol*) [0x5595077cc596] src/dmd/backend/dout.d:850 nothrow @trusted void dmd.backend.dout.writefunc(dmd.backend.cc.Symbol*) [0x5595077cbf12] src/dmd/glue.d:1248 void dmd.glue.FuncDeclaration_toObjFile(dmd.func.FuncDeclaration, bool) [0x55950776a6bf] src/dmd/toobj.d:325 _ZN9toObjFile9ToObjFile5visitEP15FuncDeclaration [0x559507783d49] src/dmd/func.d:2996 _ZN15FuncDeclaration6acceptEP7Visitor [0x55950768aee9] src/dmd/toobj.d:554 void dmd.toobj.toObjFile(dmd.dsymbol.Dsymbol, bool).ToObjFile.visit(dmd.dstruct.StructDeclaration).__lambda4!(dmd.dsymbol.Dsymbol).__lambda4(dmd.dsymbol.Dsymbol) [0x559507784615] src/dmd/dsymbol.d:104 void dmd.dsymbol.foreachDsymbol(dmd.root.array.Array!(dmd.dsymbol.Dsymbol).Array*, void delegate(dmd.dsymbol.Dsymbol)) [0x5595075fdc3f] src/dmd/toobj.d:554 _ZN9toObjFile9ToObjFile5visitEP17StructDeclaration [0x559507784564] src/dmd/dstruct.d:486 _ZN17StructDeclaration6acceptEP7Visitor [0x5595075fd4a5] src/dmd/toobj.d:1045 void dmd.toobj.toObjFile(dmd.dsymbol.Dsymbol, bool) [0x559507783cb0] src/dmd/glue.d:576 void dmd.glue.genObjFile(dmd.dmodule.Module, bool) [0x55950776870c] src/dmd/glue.d:147 void dmd.glue.generateCodeAndWrite(dmd.dmodule.Module[], const(char)*[], const(char)[], const(char)[], bool, bool, bool, bool, bool) [0x559507766c88] src/dmd/main.d:622 int dmd.main.tryMain(ulong, const(char)**, ref dmd.globals.Param) [0x55950757398d] src/dmd/main.d:133 _Dmain [0x55950757229c]

That's just assert(0);

THIS ISSUE HAS BEEN MOVED TO GITHUB https://github.com/dlang/dmd/issues/20366 DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB