Bug 23398 – compilers dinterpret.d has array bounds error when running CTFE

Reported by Andrey Zherikov I cloned master branch from `https://github.com/dlang/dmd`, built DMD with `BUILD=debug ./compiler/src/build.d dmd` then executed with a command that dub runs and got the following: ``` 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 v2.100.2 predefs Have_argparse DigitalMars LittleEndian D_Version2 all D_SIMD Posix ELFv1 linux CRuntime_Glibc CppRuntime_Gcc D_InlineAsm_X86_64 X86_64 D_LP64 D_PIC unittest assert D_PreConditions D_PostConditions D_Invariants D_ModuleInfo D_Exceptions D_TypeInfo D_HardFloat binary /home/andrey/dmd/dmd/generated/linux/debug/64/dmd version v2.100.2 config /home/andrey/dmd/dmd/generated/linux/debug/64/dmd.conf DFLAGS -I/home/andrey/dmd/dmd/generated/linux/debug/64/../../../../druntime/import -I/home/andrey/dmd/dmd/generated/linux/debug/64/../../../../../phobos -L-L/home/andrey/dmd/dmd/generated/linux/debug/64/../../../../../phobos/generated/linux/debug/64 -L--export-dynamic -fPIC --- core.exception.ArrayIndexError@/home/andrey/dmd/dmd/compiler/src/dmd/root/array.d(269): index [1722] is out of bounds for array of length 141 ---------------- ??:? _d_arraybounds_indexp [0x564720b74f5d] /home/andrey/dmd/dmd/compiler/src/dmd/root/array.d:269 _ZN5ArrayIP10ExpressionEixEm [0x5647207f4025] src/dmd/dinterpret.d:353 _ZN9CtfeStack4pushEP14VarDeclaration [0x564720897f1a] src/dmd/dinterpret.d:2316 int dmd.dinterpret.Interpreter.visit(dmd.expression.DeclarationExp).__lambda6!(dmd.dsymbol.Dsymbol).__lambda6(dmd.dsymbol.Dsymbol) [0x56472089dc24] src/dmd/declaration.d:701 int dmd.declaration.TupleDeclaration.foreachVar(scope int delegate(dmd.dsymbol.Dsymbol)) [0x564720891345] src/dmd/dinterpret.d:2309 _ZN11Interpreter5visitEP14DeclarationExp [0x56472089d875] src/dmd/expression.d:4112 _ZN14DeclarationExp6acceptEP7Visitor [0x56472091962d] src/dmd/dinterpret.d:6526 dmd.expression.Expression dmd.dinterpret.interpret(dmd.expression.UnionExp*, dmd.expression.Expression, dmd.dinterpret.InterState*, dmd.dinterpret.CTFEGoal) [0x5647208aaf18] src/dmd/dinterpret.d:816 _ZN11Interpreter5visitEP12ExpStatement [0x56472089992f] src/dmd/statement.d:485 _ZN12ExpStatement6acceptEP7Visitor [0x5647209ccb31] src/dmd/dinterpret.d:6591 dmd.expression.Expression dmd.dinterpret.interpret(dmd.expression.UnionExp*, dmd.statement.Statement, dmd.dinterpret.InterState*) [0x5647208ab13b] src/dmd/dinterpret.d:834 _ZN11Interpreter5visitEP17CompoundStatement [0x5647208999f1] src/dmd/statement.d:628 _ZN17CompoundStatement6acceptEP7Visitor [0x5647209cd055] src/dmd/dinterpret.d:6591 dmd.expression.Expression dmd.dinterpret.interpret(dmd.expression.UnionExp*, dmd.statement.Statement, dmd.dinterpret.InterState*) [0x5647208ab13b] src/dmd/dinterpret.d:834 _ZN11Interpreter5visitEP17CompoundStatement [0x5647208999f1] src/dmd/statement.d:628 _ZN17CompoundStatement6acceptEP7Visitor [0x5647209cd055] src/dmd/dinterpret.d:6591 dmd.expression.Expression dmd.dinterpret.interpret(dmd.expression.UnionExp*, dmd.statement.Statement, dmd.dinterpret.InterState*) [0x5647208ab13b] src/dmd/dinterpret.d:644 dmd.expression.Expression dmd.dinterpret.interpretFunction(dmd.expression.UnionExp*, dmd.func.FuncDeclaration, dmd.dinterpret.InterState*, dmd.root.array.Array!(dmd.expression.Expression).Array*, dmd.expression.Expression) [0x5647208992bf] src/dmd/dinterpret.d:4986 _ZN11Interpreter5visitEP7CallExp [0x5647208a5ff8] src/dmd/expression.d:5169 _ZN7CallExp6acceptEP7Visitor [0x56472091be45] src/dmd/dinterpret.d:6526 dmd.expression.Expression dmd.dinterpret.interpret(dmd.expression.UnionExp*, dmd.expression.Expression, dmd.dinterpret.InterState*, dmd.dinterpret.CTFEGoal) [0x5647208aaf18] src/dmd/dinterpret.d:6536 dmd.expression.Expression dmd.dinterpret.interpret(dmd.expression.Expression, dmd.dinterpret.InterState*, dmd.dinterpret.CTFEGoal) [0x5647208aaf71] src/dmd/dinterpret.d:100 dmd.expression.Expression dmd.dinterpret.ctfeInterpret(dmd.expression.Expression) [0x56472089720a] src/dmd/expression.d:1619 _ZN10Expression13ctfeInterpretEv [0x5647209131ec] src/dmd/initsem.d:465 dmd.init.Initializer dmd.initsem.initializerSemantic(dmd.init.Initializer, dmd.dscope.Scope*, ref dmd.mtype.Type, dmd.init.NeedInterpret).visitExp(dmd.init.ExpInitializer) [0x56472097105d] src/dmd/initsem.d:1058 _Z19initializerSemanticP11InitializerP5ScopeRP4Type13NeedInterpret [0x56472096f691] src/dmd/semantic2.d:259 _ZN16Semantic2Visitor5visitEP14VarDeclaration [0x5647209c45e8] src/dmd/declaration.d:1703 _ZN14VarDeclaration6acceptEP7Visitor [0x564720893765] src/dmd/semantic2.d:79 _Z9semantic2P7DsymbolP5Scope [0x5647209c3e7d] src/dmd/semantic2.d:173 _ZN16Semantic2Visitor5visitEP16TemplateInstance [0x5647209c42d0] src/dmd/dtemplate.d:7518 _ZN16TemplateInstance6acceptEP7Visitor [0x5647208fd19d] src/dmd/semantic2.d:79 _Z9semantic2P7DsymbolP5Scope [0x5647209c3e7d] src/dmd/dsymbolsem.d:6216 void dmd.dsymbolsem.templateInstanceSemantic(dmd.dtemplate.TemplateInstance, dmd.dscope.Scope*, dmd.root.array.Array!(dmd.expression.Expression).Array*) [0x5647208e8094] src/dmd/dsymbolsem.d:2639 _ZN22DsymbolSemanticVisitor5visitEP16TemplateInstance [0x5647208dd3b6] src/dmd/dtemplate.d:7518 _ZN16TemplateInstance6acceptEP7Visitor [0x5647208fd19d] src/dmd/dsymbolsem.d:130 _Z15dsymbolSemanticP7DsymbolP5Scope [0x5647208d5395] src/dmd/typesem.d:2799 void dmd.typesem.resolve(dmd.mtype.Type, ref const(dmd.globals.Loc), dmd.dscope.Scope*, out dmd.expression.Expression, out dmd.mtype.Type, out dmd.dsymbol.Dsymbol, bool).visitInstance(dmd.mtype.TypeInstance) [0x5647209f71db] src/dmd/typesem.d:3169 void dmd.typesem.resolve(dmd.mtype.Type, ref const(dmd.globals.Loc), dmd.dscope.Scope*, out dmd.expression.Expression, out dmd.mtype.Type, out dmd.dsymbol.Dsymbol, bool) [0x5647209f6784] src/dmd/dtemplate.d:6599 bool dmd.dtemplate.TemplateInstance.semanticTiargs(ref const(dmd.globals.Loc), dmd.dscope.Scope*, dmd.root.array.Array!(dmd.root.rootobject.RootObject).Array*, int, dmd.declaration.TupleDeclaration) [0x5647208fa86d] src/dmd/dtemplate.d:6851 bool dmd.dtemplate.TemplateInstance.semanticTiargs(dmd.dscope.Scope*) [0x5647208fb0af] src/dmd/expressionsem.d:13071 dmd.expression.Expression dmd.expressionsem.semanticY(dmd.expression.DotTemplateInstanceExp, dmd.dscope.Scope*, int) [0x56472094d57a] src/dmd/expressionsem.d:6766 _ZN25ExpressionSemanticVisitor5visitEP22DotTemplateInstanceExp [0x564720938901] src/dmd/expression.d:4984 _ZN22DotTemplateInstanceExp6acceptEP7Visitor [0x56472091b765] src/dmd/expressionsem.d:12513 _Z18expressionSemanticP10ExpressionP5Scope [0x56472094b263] src/dmd/statementsem.d:205 _ZN24StatementSemanticVisitor5visitEP12ExpStatement [0x5647209d05e7] src/dmd/statement.d:485 _ZN12ExpStatement6acceptEP7Visitor [0x5647209ccb31] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/statementsem.d:268 _ZN24StatementSemanticVisitor5visitEP17CompoundStatement [0x5647209d08ae] src/dmd/statement.d:628 _ZN17CompoundStatement6acceptEP7Visitor [0x5647209cd055] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/statementsem.d:475 _ZN24StatementSemanticVisitor5visitEP14ScopeStatement [0x5647209d142e] src/dmd/statement.d:736 _ZN14ScopeStatement6acceptEP7Visitor [0x5647209cd45d] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/statementsem.d:513 _ZN24StatementSemanticVisitor5visitEP19ForwardingStatement [0x5647209d162d] src/dmd/statement.d:776 _ZN19ForwardingStatement6acceptEP7Visitor [0x5647209cd59d] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/statementsem.d:268 _ZN24StatementSemanticVisitor5visitEP17CompoundStatement [0x5647209d08ae] src/dmd/statement.d:628 _ZN17CompoundStatement6acceptEP7Visitor [0x5647209cd055] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/semantic3.d:598 _ZN16Semantic3Visitor5visitEP15FuncDeclaration [0x5647209c7149] src/dmd/func.d:2930 _ZN15FuncDeclaration6acceptEP7Visitor [0x5647209560d9] src/dmd/semantic3.d:82 _Z9semantic3P7DsymbolP5Scope [0x5647209c5b29] src/dmd/semantic3.d:133 _ZN16Semantic3Visitor5visitEP16TemplateInstance [0x5647209c5cd2] src/dmd/dtemplate.d:7518 _ZN16TemplateInstance6acceptEP7Visitor [0x5647208fd19d] src/dmd/semantic3.d:82 _Z9semantic3P7DsymbolP5Scope [0x5647209c5b29] src/dmd/dtemplate.d:7506 void dmd.dtemplate.TemplateInstance.trySemantic3(dmd.dscope.Scope*) [0x5647208fd156] src/dmd/dsymbolsem.d:6293 void dmd.dsymbolsem.templateInstanceSemantic(dmd.dtemplate.TemplateInstance, dmd.dscope.Scope*, dmd.root.array.Array!(dmd.expression.Expression).Array*) [0x5647208e83da] src/dmd/dtemplate.d:3090 void dmd.dtemplate.functionResolve(ref dmd.declaration.MatchAccumulator, dmd.dsymbol.Dsymbol, dmd.globals.Loc, dmd.dscope.Scope*, dmd.root.array.Array!(dmd.root.rootobject.RootObject).Array*, dmd.mtype.Type, dmd.root.array.Array!(dmd.expression.Expression).Array*, const(char)**) [0x5647208f0efa] src/dmd/func.d:3227 dmd.func.FuncDeclaration dmd.func.resolveFuncCall(ref const(dmd.globals.Loc), dmd.dscope.Scope*, dmd.dsymbol.Dsymbol, dmd.root.array.Array!(dmd.root.rootobject.RootObject).Array*, dmd.mtype.Type, dmd.root.array.Array!(dmd.expression.Expression).Array*, dmd.func.FuncResolveFlag) [0x564720956943] src/dmd/expressionsem.d:4991 _ZN25ExpressionSemanticVisitor5visitEP7CallExp [0x564720932367] src/dmd/expression.d:5169 _ZN7CallExp6acceptEP7Visitor [0x56472091be45] src/dmd/expressionsem.d:12513 _Z18expressionSemanticP10ExpressionP5Scope [0x56472094b263] src/dmd/statementsem.d:205 _ZN24StatementSemanticVisitor5visitEP12ExpStatement [0x5647209d05e7] src/dmd/statement.d:485 _ZN12ExpStatement6acceptEP7Visitor [0x5647209ccb31] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/statementsem.d:268 _ZN24StatementSemanticVisitor5visitEP17CompoundStatement [0x5647209d08ae] src/dmd/statement.d:628 _ZN17CompoundStatement6acceptEP7Visitor [0x5647209cd055] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/semantic3.d:598 _ZN16Semantic3Visitor5visitEP15FuncDeclaration [0x5647209c7149] src/dmd/func.d:2930 _ZN15FuncDeclaration6acceptEP7Visitor [0x5647209560d9] src/dmd/semantic3.d:82 _Z9semantic3P7DsymbolP5Scope [0x5647209c5b29] src/dmd/semantic3.d:133 _ZN16Semantic3Visitor5visitEP16TemplateInstance [0x5647209c5cd2] src/dmd/dtemplate.d:7518 _ZN16TemplateInstance6acceptEP7Visitor [0x5647208fd19d] src/dmd/semantic3.d:82 _Z9semantic3P7DsymbolP5Scope [0x5647209c5b29] src/dmd/dtemplate.d:7506 void dmd.dtemplate.TemplateInstance.trySemantic3(dmd.dscope.Scope*) [0x5647208fd156] src/dmd/dsymbolsem.d:6293 void dmd.dsymbolsem.templateInstanceSemantic(dmd.dtemplate.TemplateInstance, dmd.dscope.Scope*, dmd.root.array.Array!(dmd.expression.Expression).Array*) [0x5647208e83da] src/dmd/dtemplate.d:3090 void dmd.dtemplate.functionResolve(ref dmd.declaration.MatchAccumulator, dmd.dsymbol.Dsymbol, dmd.globals.Loc, dmd.dscope.Scope*, dmd.root.array.Array!(dmd.root.rootobject.RootObject).Array*, dmd.mtype.Type, dmd.root.array.Array!(dmd.expression.Expression).Array*, const(char)**) [0x5647208f0efa] src/dmd/func.d:3227 dmd.func.FuncDeclaration dmd.func.resolveFuncCall(ref const(dmd.globals.Loc), dmd.dscope.Scope*, dmd.dsymbol.Dsymbol, dmd.root.array.Array!(dmd.root.rootobject.RootObject).Array*, dmd.mtype.Type, dmd.root.array.Array!(dmd.expression.Expression).Array*, dmd.func.FuncResolveFlag) [0x564720956943] src/dmd/expressionsem.d:4991 _ZN25ExpressionSemanticVisitor5visitEP7CallExp [0x564720932367] src/dmd/expression.d:5169 _ZN7CallExp6acceptEP7Visitor [0x56472091be45] src/dmd/expressionsem.d:12513 _Z18expressionSemanticP10ExpressionP5Scope [0x56472094b263] src/dmd/statementsem.d:205 _ZN24StatementSemanticVisitor5visitEP12ExpStatement [0x5647209d05e7] src/dmd/statement.d:485 _ZN12ExpStatement6acceptEP7Visitor [0x5647209ccb31] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/statementsem.d:268 _ZN24StatementSemanticVisitor5visitEP17CompoundStatement [0x5647209d08ae] src/dmd/statement.d:628 _ZN17CompoundStatement6acceptEP7Visitor [0x5647209cd055] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/semantic3.d:598 _ZN16Semantic3Visitor5visitEP15FuncDeclaration [0x5647209c7149] src/dmd/func.d:2930 _ZN15FuncDeclaration6acceptEP7Visitor [0x5647209560d9] src/dmd/semantic3.d:82 _Z9semantic3P7DsymbolP5Scope [0x5647209c5b29] src/dmd/semantic3.d:133 _ZN16Semantic3Visitor5visitEP16TemplateInstance [0x5647209c5cd2] src/dmd/dtemplate.d:7518 _ZN16TemplateInstance6acceptEP7Visitor [0x5647208fd19d] src/dmd/semantic3.d:82 _Z9semantic3P7DsymbolP5Scope [0x5647209c5b29] src/dmd/dtemplate.d:7506 void dmd.dtemplate.TemplateInstance.trySemantic3(dmd.dscope.Scope*) [0x5647208fd156] src/dmd/dsymbolsem.d:6233 void dmd.dsymbolsem.templateInstanceSemantic(dmd.dtemplate.TemplateInstance, dmd.dscope.Scope*, dmd.root.array.Array!(dmd.expression.Expression).Array*) [0x5647208e8115] src/dmd/dtemplate.d:3090 void dmd.dtemplate.functionResolve(ref dmd.declaration.MatchAccumulator, dmd.dsymbol.Dsymbol, dmd.globals.Loc, dmd.dscope.Scope*, dmd.root.array.Array!(dmd.root.rootobject.RootObject).Array*, dmd.mtype.Type, dmd.root.array.Array!(dmd.expression.Expression).Array*, const(char)**) [0x5647208f0efa] src/dmd/func.d:3227 dmd.func.FuncDeclaration dmd.func.resolveFuncCall(ref const(dmd.globals.Loc), dmd.dscope.Scope*, dmd.dsymbol.Dsymbol, dmd.root.array.Array!(dmd.root.rootobject.RootObject).Array*, dmd.mtype.Type, dmd.root.array.Array!(dmd.expression.Expression).Array*, dmd.func.FuncResolveFlag) [0x564720956943] src/dmd/expressionsem.d:1317 dmd.expression.Expression dmd.expressionsem.resolvePropertiesX(dmd.dscope.Scope*, dmd.expression.Expression, dmd.expression.Expression) [0x564720926a84] src/dmd/expressionsem.d:1401 _Z17resolvePropertiesP5ScopeP10Expression [0x564720926e8e] src/dmd/expressionsem.d:1627 bool dmd.expressionsem.preFunctionParameters(dmd.dscope.Scope*, dmd.root.array.Array!(dmd.expression.Expression).Array*, const(bool)) [0x564720927752] src/dmd/expressionsem.d:4530 _ZN25ExpressionSemanticVisitor5visitEP7CallExp [0x564720930a0b] src/dmd/expression.d:5169 _ZN7CallExp6acceptEP7Visitor [0x56472091be45] src/dmd/expressionsem.d:12513 _Z18expressionSemanticP10ExpressionP5Scope [0x56472094b263] src/dmd/statementsem.d:205 _ZN24StatementSemanticVisitor5visitEP12ExpStatement [0x5647209d05e7] src/dmd/statement.d:485 _ZN12ExpStatement6acceptEP7Visitor [0x5647209ccb31] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/statementsem.d:268 _ZN24StatementSemanticVisitor5visitEP17CompoundStatement [0x5647209d08ae] src/dmd/statement.d:628 _ZN17CompoundStatement6acceptEP7Visitor [0x5647209cd055] src/dmd/statementsem.d:147 _Z17statementSemanticP9StatementP5Scope [0x5647209d04cb] src/dmd/semantic3.d:598 _ZN16Semantic3Visitor5visitEP15FuncDeclaration [0x5647209c7149] src/dmd/func.d:2930 _ZN15FuncDeclaration6acceptEP7Visitor [0x5647209560d9] src/dmd/semantic3.d:82 _Z9semantic3P7DsymbolP5Scope [0x5647209c5b29] src/dmd/expressionsem.d:5414 _ZN25ExpressionSemanticVisitor5visitEP14DeclarationExp [0x56472093422c] ``` I'll try to run dmd under gdb in hope to get more details but may be above would be enough for compiler devs to ring a bell.

On Friday, 7 October 2022 at 14:12:14 UTC, Andrey Zherikov wrote: > I'll try to run dmd under gdb in hope to get more details but may be above would be enough for compiler devs to ring a bell. Here is gdb stack: ``` Breakpoint 2, Array<Expression*>::operator[](unsigned long) (this=..., i=1722) at /home/andrey/dmd/dmd/compiler/src/dmd/root/array.d:269 269 return data[i]; (gdb) p this $4 = (const dmd.root.array.Array!(dmd.expression.Expression).Array &) @0x555555da6398: {length = 3, data = {0x7ffff4f4ca00, 0x7ffff4f4c730, 0x7ffff4f4c730, 0x7ffff4f4a350, 0x7ffff4f4a170, 0x7fffdbfa30c0, 0x7fffdbd3f1e0, 0x7fffdbfa3c10, 0x7ffff4f4db10, 0x7ffff4f4db60, 0x7ffff4f4db60, 0x7ffff4f4db10, 0x7fffdbd3e300, 0x7ffff4f4c910, 0x7fffdbd3e3f0, 0x7fffdbd3dd80, 0x7fffdbd3dd80, 0x7ffff4f4cf70, 0x7ffff3d4d420, 0x7fffdbd3dd80, 0x7ffff4f4d150, 0x7ffff4f4d360, 0x7ffff4f4d3c0, 0x7ffff4f4d3f0, 0x7fffdbd3dd80, 0x7ffff4f4d1b0, 0x7ffff4f4d230, 0x7ffff4f4d260, 0x7fffdc25a2f0, 0x7fffdc243570, 0x7fffdc243570, 0x7fffdc366260, 0x7fffdc366c20, 0x7fffdc6bd600, 0x7ffff4f77f40, 0x7ffff4f7c0a0, 0x7ffff4f82390, 0x7fffdc6bd680, 0x7fffdc243a20, 0x7fffdc25a2f0, 0x7ffff4f94860, 0x7fffdc243a20, 0x7fffdc482ff0, 0x7fffdc260500, 0x7fffdc482ff0, 0x7ffff4f94800, 0x7fffdc482ff0, 0x7ffff37973a0, 0x7fffdc243570, 0x7ffff4f94800, 0x7ffff4f96830, 0x7ffff4f96890, 0x7ffff4f968c0, 0x7fffdc243570, 0x7ffff4f963e0, 0x7ffff4f96460, 0x7ffff4f96490, 0x7ffff2c1a760, 0x7ffff2c1a7a0, 0x7ffff4f948c0, 0x7ffff283ff70, 0x7ffff283ff40, 0x7fffdc482ff0, 0x7ffff2c1a760, 0x7ffff2c1a7a0, 0x7ffff2c24140, 0x7ffff4f948c0, 0x7ffff283ff70, 0x7ffff2c27be0, 0x7ffff2c3a1a0, 0x7ffff4f949f0, 0x7ffff4f94a50, 0x7ffff2c3a5b0, 0x7ffff54223d0, 0x7ffff27ae960, 0x7ffff27aec70, 0x7ffff27aeda0, 0x7ffff54223d0, 0x7ffff4f94bc0, 0x7ffff4f94bf0, 0x7ffff27b6460, 0x7ffff2835f80, 0x7ffff27b6460, 0x7ffff2839790, 0x7ffff27aeda0, 0x7fffdc482ff0, 0x7ffff4f948c0, 0x7fffdc482ff0, 0x7ffff27e28e0, 0x7fffdc243570, 0x7ffff4f948c0, 0x7ffff4f96000, 0x7ffff4f96060, 0x7ffff4f96090, 0x7fffdc243570, 0x7ffff4f95bb0, 0x7ffff4f95c30, 0x7ffff4f95c60, 0x7ffff45a1d40, 0x7ffff4f84d80, 0x7fffec3f85b0, 0x7fffec3f85e0, 0x7fffec3f85b0, 0x7ffff4f84e70, 0x7ffff4f84f30, 0x7ffff45a1ef0, 0x7ffff4f84f30, 0x7fffec3f9180, 0x7fffec3f9150, 0x7fffec3f9120, 0x7ffff4f7aa90, 0x7fffec3c0680, 0x7ffff45a1d40, 0x7ffff4f7aa90, 0x7fffec3cc210, 0x7fffec3cc240, 0x7fffec3cc210, 0x7ffff4f7ab80, 0x7ffff4f7ac40, 0x7ffff45a1ef0, 0x7ffff4f7ac40, 0x7fffec3ccde0, 0x7fffec3ccdb0, 0x7fffec3ccd80, 0xffffffffffffffff <repeats 17 times>}, smallarray = {0x7ffff4e03e80}} (gdb) where #0 Array<Expression*>::operator[](unsigned long) (this=..., i=1722) at /home/andrey/dmd/dmd/compiler/src/dmd/root/array.d:269 #1 0x0000555555906f1b in CtfeStack::push(VarDeclaration*) (this=..., v=0x7fffdbbf7e90) at src/dmd/dinterpret.d:353 #2 0x000055555590cc25 in _D3dmd10dinterpret11Interpreter5visitMRCQBm10expression14DeclarationExpZ__T9__lambda6TCQDh7dsymbol7DsymbolZQBgMFQBaZi (__capture=0x7fffffff3210, s=0x7fffdbbf7e90) at src/dmd/dinterpret.d:2316 #3 0x0000555555900346 in _D3dmd11declaration16TupleDeclaration10foreachVarMFMDFCQCb7dsymbol7DsymbolZiZi (this=0x7fffdbbf8c60, dg=...) at src/dmd/declaration.d:701 #4 0x000055555590c876 in Interpreter::visit(DeclarationExp*) (this=0x7fffffff3260, e=0x7fffdbbf4170) at src/dmd/dinterpret.d:2309 #5 0x000055555598862e in DeclarationExp::accept(Visitor*) (this=0x7fffdbbf4170, v=0x7fffffff3260) at src/dmd/expression.d:4112 #6 0x0000555555919f19 in _D3dmd10dinterpret9interpretFPSQBd10expression8UnionExpCQCcQz10ExpressionPSQCvQCu10InterStateEQDoQDn8CTFEGoalZQCd (goal=<incomplete type>, istate=0x7fffffff3640, e=0x7fffdbbf4170, pue=0x7fffffff39f0) at src/dmd/dinterpret.d:6526 #7 0x0000555555908930 in Interpreter::visit(ExpStatement*) (this=0x7fffffff3320, s=0x7fffdbbf4140) at src/dmd/dinterpret.d:816 #8 0x0000555555a3bb32 in ExpStatement::accept(Visitor*) (this=0x7fffdbbf4140, v=0x7fffffff3320) at src/dmd/statement.d:485 #9 0x000055555591a13c in _D3dmd10dinterpret9interpretFPSQBd10expression8UnionExpCQCc9statement9StatementPSQDbQDa10InterStateZCQDvQCs10Expression (istate=0x7fffffff3640, s=0x7fffdbbf4140, pue=0x7fffffff39f0) at src/dmd/dinterpret.d:6591 #10 0x00005555559089f2 in Interpreter::visit(CompoundStatement*) (this=0x7fffffff3400, s=0x7fffdbbf3de0) at src/dmd/dinterpret.d:834 #11 0x0000555555a3c056 in CompoundStatement::accept(Visitor*) (this=0x7fffdbbf3de0, v=0x7fffffff3400) at src/dmd/statement.d:628 #12 0x000055555591a13c in _D3dmd10dinterpret9interpretFPSQBd10expression8UnionExpCQCc9statement9StatementPSQDbQDa10InterStateZCQDvQCs10Expression (istate=0x7fffffff3640, s=0x7fffdbbf3de0, pue=0x7fffffff39f0) at src/dmd/dinterpret.d:6591 #13 0x00005555559089f2 in Interpreter::visit(CompoundStatement*) (this=0x7fffffff34e0, s=0x7fffdbbfd460) at src/dmd/dinterpret.d:834 #14 0x0000555555a3c056 in CompoundStatement::accept(Visitor*) (this=0x7fffdbbfd460, v=0x7fffffff34e0) at src/dmd/statement.d:628 #15 0x000055555591a13c in _D3dmd10dinterpret9interpretFPSQBd10expression8UnionExpCQCc9statement9StatementPSQDbQDa10InterStateZCQDvQCs10Expression (istate=0x7fffffff3640, s=0x7fffdbbfd460, pue=0x7fffffff39f0) at src/dmd/dinterpret.d:6591 #16 0x00005555559082c0 in _D3dmd10dinterpret17interpretFunctionFPSQBm10expression8UnionExpCQCl4func15FuncDeclarationPSQDmQDl10InterStatePSQEg4root5array__T5ArrayTCQFfQDt10ExpressionZQBbQxZQBa ( thisarg=0x0, arguments=0x7fffdbbf6840, istate=0x0, fd=0x7fffdbbf3ad0, pue=0x7fffffff39f0) at src/dmd/dinterpret.d:644 #17 0x0000555555914ff9 in Interpreter::visit(CallExp*) (this=0x7fffffff3990, e=0x7fffdbbf3a30) at src/dmd/dinterpret.d:4986 #18 0x000055555598ae46 in CallExp::accept(Visitor*) (this=0x7fffdbbf3a30, v=0x7fffffff3990) at src/dmd/expression.d:5169 #19 0x0000555555919f19 in _D3dmd10dinterpret9interpretFPSQBd10expression8UnionExpCQCcQz10ExpressionPSQCvQCu10InterStateEQDoQDn8CTFEGoalZQCd (goal=<incomplete type>, istate=0x0, e=0x7fffdbbf3a30, pue=0x7fffffff39f0) at src/dmd/dinterpret.d:6526 #20 0x0000555555919f72 in _D3dmd10dinterpret9interpretFCQBc10expression10ExpressionPSQCfQCe10InterStateEQCyQCx8CTFEGoalZQCn (goal=<incomplete type>, istate=0x0, e=0x7fffdbbf3a30) at src/dmd/dinterpret.d:6536 #21 0x000055555590620b in _D3dmd10dinterpret13ctfeInterpretFCQBh10expression10ExpressionZQBd (e=0x7fffdbbf3a30) at src/dmd/dinterpret.d:100 #22 0x00005555559821ed in Expression::ctfeInterpret() (this=0x7fffdbbf3a30) at src/dmd/expression.d:1619 #23 0x00005555559e005e in _D3dmd7initsem19initializerSemanticRCQBj4init11InitializerPSQCg6dscope5ScopeKCQCy5mtype4TypeEQDnQCe13NeedInterpretZ8visitExpMFCQEvQDm14ExpInitializerZQEk ( __capture=0x7fffffff3cc0, i=0x7fffdbbf3a00) at src/dmd/initsem.d:465 #24 0x00005555559de692 in initializerSemantic(Initializer*, Scope*, Type*&, NeedInterpret) (init=0x7fffdbbf3a00, sc=0x7fffdbbf6ef0, tx=@0x7fffdbbf3950: 0x7fffebb7d280, needInterpret=<incomplete type>) at src/dmd/initsem.d:1058 #25 0x0000555555a335e9 in Semantic2Visitor::visit(VarDeclaration*) (this=0x7fffffff3d60, vd=0x7fffdbbf38f0) at src/dmd/semantic2.d:259 #26 0x0000555555902766 in VarDeclaration::accept(Visitor*) (this=0x7fffdbbf38f0, v=0x7fffffff3d60) at src/dmd/declaration.d:1703 #27 0x0000555555a32e7e in semantic2(Dsymbol*, Scope*) (dsym=0x7fffdbbf38f0, sc=0x7fffdbbf6ef0) at src/dmd/semantic2.d:79 #28 0x0000555555a332d1 in Semantic2Visitor::visit(TemplateInstance*) (this=0x7fffffff3e40, tempinst=0x7fffdbf35f00) at src/dmd/semantic2.d:173 #29 0x000055555596c19e in TemplateInstance::accept(Visitor*) (this=0x7fffdbf35f00, v=0x7fffffff3e40) at src/dmd/dtemplate.d:7518 #30 0x0000555555a32e7e in semantic2(Dsymbol*, Scope*) (dsym=0x7fffdbf35f00, sc=0x7fffdbbe4a70) at src/dmd/semantic2.d:79 #31 0x0000555555957095 in _D3dmd10dsymbolsem24templateInstanceSemanticFCQBs9dtemplate16TemplateInstancePSQCz6dscope5ScopePSQDr4root5array__T5ArrayTCQEq10expression10ExpressionZQBkZv (fargs=0x0, (gdb) #32 0x000055555594c3b7 in DsymbolSemanticVisitor::visit(TemplateInstance*) (this=0x7fffffff41e0, ti=0x7fffdbf35f00) at src/dmd/dsymbolsem.d:2639 #33 0x000055555596c19e in TemplateInstance::accept(Visitor*) (this=0x7fffdbf35f00, v=0x7fffffff41e0) at src/dmd/dtemplate.d:7518 #34 0x0000555555944396 in dsymbolSemantic(Dsymbol*, Scope*) (dsym=0x7fffdbf35f00, sc=0x7fffdbf3e310) at src/dmd/dsymbolsem.d:130 #35 0x0000555555a661dc in _D3dmd7typesem7resolveFCQw5mtype4TypeKxSQBm7globals3LocPSQCd6dscope5ScopeJCQCv10expression10ExpressionJQDcJCQEc7dsymbol7DsymbolbZ13visitInstanceMFCQFpQEu12TypeInstanceZv ( __capture=0x7fffffff4280, mt=0x7fffdbf35e80) at src/dmd/typesem.d:2799 #36 0x0000555555a65785 in _D3dmd7typesem7resolveFCQw5mtype4TypeKxSQBm7globals3LocPSQCd6dscope5ScopeJCQCv10expression10ExpressionJQDcJCQEc7dsymbol7DsymbolbZv (intypeid=false, ps=@0x7fffffff42e0: 0x0, pt=@0x7fffffff42d0: 0x0, pe=@0x7fffffff42d8: 0x0, sc=0x7fffdbf3e310, loc=..., mt=0x7fffdbf35e80) at src/dmd/typesem.d:3169 #37 0x000055555596986e in _D3dmd9dtemplate16TemplateInstance14semanticTiargsFKxSQCa7globals3LocPSQCr6dscope5ScopePSQDj4root5array__T5ArrayTCQEiQz10rootobject10RootObjectZQBmiCQFr11declaration16TupleDeclarationZb (atd=0x0, flags=0, tiargs=0x7fffdbf35dd0, sc=0x7fffdbf3e310, loc=...) at src/dmd/dtemplate.d:6599 #38 0x000055555596a0b0 in _D3dmd9dtemplate16TemplateInstance14semanticTiargsMFPSQCa6dscope5ScopeZb (this=0x7fffdbf362c0, sc=0x7fffdbf3e310) at src/dmd/dtemplate.d:6851 #39 0x00005555559bc57b in _D3dmd13expressionsem9semanticYFCQBf10expression22DotTemplateInstanceExpPSQCu6dscope5ScopeiZCQDnQCi10Expression (flag=1, sc=0x7fffdbf3e310, exp=0x7fffdbf35d60) ```

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