Thread overview
Weird LDC error on mac
Mar 03
Bogdan
Mar 03
Bogdan
Mar 03
Sergey
March 03

Hey everyone!

After a long time, I wanted to build my Vibe project on Mac using LDC, and I got weird compiling errors that made no sense and didn't know how to debug or fix. Does anyone have any tips on how I should make it work?

lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
DtoOverloadedIntrinsicName
* template instance: llvm_bswap!uint
* template declaration: llvm_bswap(T)(T val) if (__traits(isIntegral, T) && (T.sizeof >= 2))
* intrinsic name: llvm.bswap.i#
* final intrinsic name: llvm.bswap.i32
DtoOverloadedIntrinsicName
* template instance: llvm_bswap!ulong
* template declaration: llvm_bswap(T)(T val) if (__traits(isIntegral, T) && (T.sizeof >= 2))
* intrinsic name: llvm.bswap.i#
* final intrinsic name: llvm.bswap.i64
import    vibe.core.channel     (submodules/vibe-core/source/vibe/core/channel.d)
import    std.zlib      (/opt/homebrew/Cellar/ldc/1.40.0/include/dlang/ldc/std/zlib.d)
import    diet.html     (../../.dub/packages/diet-ng/1.8.1/diet-ng/source/diet/html.d)
import    diet.defs     (../../.dub/packages/diet-ng/1.8.1/diet-ng/source/diet/defs.d)
import    diet.internal.html    (../../.dub/packages/diet-ng/1.8.1/diet-ng/source/diet/internal/html.d)
import    diet.input    (../../.dub/packages/diet-ng/1.8.1/diet-ng/source/diet/input.d)
import    diet.parser   (../../.dub/packages/diet-ng/1.8.1/diet-ng/source/diet/parser.d)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
lowered   this._data.refCountedPayload()._payload[] = value =>
          _d_arraysetassign(this._data.refCountedPayload()._payload[], value)
lowered   slice[i..j] = value =>
          _d_arraysetassign(slice[i..j], value)
lowered   this._outer_[] = data =>
          _d_arraysetctor(this._outer_[], data)
#0 0x000000010ec6a610 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/homebrew/Cellar/llvm/19.1.7_1/lib/libLLVM.dylib+0x4a12610)
#1 0x000000010ec6a9d0 SignalHandler(int) (/opt/homebrew/Cellar/llvm/19.1.7_1/lib/libLLVM.dylib+0x4a129d0)
#2 0x0000000185a66de4 (/usr/lib/system/libsystem_platform.dylib+0x180482de4)
#3 0x0000000100010b64 DsymbolSemanticVisitor::visit(UserAttributeDeclaration*) (/opt/homebrew/Cellar/ldc/1.40.0/bin/ldc2+0x100008b64)
#4 0x00000001004d0f1c _D2rt6dmain212_d_run_main2UAAamPUQgZiZ6runAllMFZv (/opt/homebrew/Cellar/ldc/1.40.0/bin/ldc2+0x1004c8f1c)
#5 0x00000001004d0b4c _d_run_main (/opt/homebrew/Cellar/ldc/1.40.0/bin/ldc2+0x1004c8b4c)
#6 0x0000000100382610 main (/opt/homebrew/Cellar/ldc/1.40.0/bin/ldc2+0x10037a610)
#7 0x00000001856b0274
Error ldc2 failed with exit code -5.
ldc2 --version                                                                                                          127 ✘
LDC - the LLVM D compiler (1.40.0):
  based on DMD v2.110.0 and LLVM 19.1.6
  built with LDC - the LLVM D compiler (1.40.0)
  Default target: arm64-apple-darwin24.3.0
  Host CPU: apple-m2
  http://dlang.org - http://wiki.dlang.org/LDC


  Registered Targets:
    aarch64     - AArch64 (little endian)
    aarch64_32  - AArch64 (little endian ILP32)
    aarch64_be  - AArch64 (big endian)
    amdgcn      - AMD GCN GPUs
    arm         - ARM
    arm64       - ARM64 (little endian)
    arm64_32    - ARM64 (little endian ILP32)
    armeb       - ARM (big endian)
    avr         - Atmel AVR Microcontroller
    bpf         - BPF (host endian)
    bpfeb       - BPF (big endian)
    bpfel       - BPF (little endian)
    hexagon     - Hexagon
    lanai       - Lanai
    loongarch32 - 32-bit LoongArch
    loongarch64 - 64-bit LoongArch
    mips        - MIPS (32-bit big endian)
    mips64      - MIPS (64-bit big endian)
    mips64el    - MIPS (64-bit little endian)
    mipsel      - MIPS (32-bit little endian)
    msp430      - MSP430 [experimental]
    nvptx       - NVIDIA PTX 32-bit
    nvptx64     - NVIDIA PTX 64-bit
    ppc32       - PowerPC 32
    ppc32le     - PowerPC 32 LE
    ppc64       - PowerPC 64
    ppc64le     - PowerPC 64 LE
    r600        - AMD GPUs HD2XXX-HD6XXX
    riscv32     - 32-bit RISC-V
    riscv64     - 64-bit RISC-V
    sparc       - Sparc
    sparcel     - Sparc LE
    sparcv9     - Sparc V9
    systemz     - SystemZ
    thumb       - Thumb
    thumbeb     - Thumb (big endian)
    ve          - VE
    wasm32      - WebAssembly 32-bit
    wasm64      - WebAssembly 64-bit
    x86         - 32-bit X86: Pentium-Pro and above
    x86-64      - 64-bit X86: EM64T and AMD64
    xcore       - XCore
March 03

I managed to get a stack trace from my error:

core.exception.AssertError@/Users/gedaiu/workspace/ldc/dmd/parsetimevisitor.d(20): Assertion failure
----------------
/tmp/ldc-20241231-7715-mkgqdh/ldc-1.40.0-src/runtime/druntime/src/core/exception.d:569 onAssertError [0x10083ccf3]
/tmp/ldc-20241231-7715-mkgqdh/ldc-1.40.0-src/runtime/druntime/src/core/exception.d:808 _d_assert [0x100899bf7]
/Users/gedaiu/workspace/ldc/dmd/parsetimevisitor.d:20 ParseTimeVisitor<ASTCodegen>::visit(Parameter*) [0x10001397f]
/Users/gedaiu/workspace/ldc/dmd/mtype.d:4354 Parameter::accept(Visitor*) [0x10003fd7f]
/Users/gedaiu/workspace/ldc/dmd/expressionsem.d:14145 dmd.expression.Expression dmd.expressionsem.expressionSemantic(dmd.expression.Expression, dmd.dscope.Scope*) [0x10003c5ff]
/Users/gedaiu/workspace/ldc/dmd/expressionsem.d:758 bool dmd.expressionsem.arrayExpressionSemantic(dmd.expression.Expression[], dmd.dscope.Scope*, bool) [0x1001e512b]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1938 DsymbolSemanticVisitor::visit(UserAttributeDeclaration*) [0x100009a1b]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:138 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(UserAttributeDeclaration*) [0x10000997b]
/Users/gedaiu/workspace/ldc/dmd/attrib.d:1151 UserAttributeDeclaration::accept(Visitor*) [0x100324c17]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:3612 void dmd.dsymbolsem.DsymbolSemanticVisitor.visit(dmd.dclass.ClassDeclaration).__lambda_L3612_C39!(dmd.dsymbol.Dsymbol).__lambda_L3612_C39(dmd.dsymbol.Dsymbol) [0x1002722b3]
/Users/gedaiu/workspace/ldc/dmd/dsymbol.d:111 void dmd.dsymbol.foreachDsymbol(dmd.root.array.Array!(dmd.dsymbol.Dsymbol).Array*, void delegate(dmd.dsymbol.Dsymbol)) [0x100065773]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:3612 DsymbolSemanticVisitor::visit(ClassDeclaration*) [0x10001123b]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:192 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(ClassDeclaration*) [0x10000edff]
/Users/gedaiu/workspace/ldc/dmd/dclass.d:958 ClassDeclaration::accept(Visitor*) [0x100042c47]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1987 void dmd.dsymbolsem.DsymbolSemanticVisitor.visit(dmd.dmodule.Module).__lambda_L1984_C35!(dmd.dsymbol.Dsymbol).__lambda_L1984_C35(dmd.dsymbol.Dsymbol) [0x10026bdfb]
/Users/gedaiu/workspace/ldc/dmd/dsymbol.d:111 void dmd.dsymbol.foreachDsymbol(dmd.root.array.Array!(dmd.dsymbol.Dsymbol).Array*, void delegate(dmd.dsymbol.Dsymbol)) [0x100065773]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1984 DsymbolSemanticVisitor::visit(Module*) [0x10000a013]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:154 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(Module*) [0x100009e03]
/Users/gedaiu/workspace/ldc/dmd/dmodule.d:1245 Module::accept(Visitor*) [0x100199d1b]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1625 DsymbolSemanticVisitor::visit(Import*) [0x1000084f3]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:115 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(Import*) [0x100007cf3]
/Users/gedaiu/workspace/ldc/dmd/dimport.d:181 Import::accept(Visitor*) [0x1002d16bf]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1987 void dmd.dsymbolsem.DsymbolSemanticVisitor.visit(dmd.dmodule.Module).__lambda_L1984_C35!(dmd.dsymbol.Dsymbol).__lambda_L1984_C35(dmd.dsymbol.Dsymbol) [0x10026bdfb]
/Users/gedaiu/workspace/ldc/dmd/dsymbol.d:111 void dmd.dsymbol.foreachDsymbol(dmd.root.array.Array!(dmd.dsymbol.Dsymbol).Array*, void delegate(dmd.dsymbol.Dsymbol)) [0x100065773]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1984 DsymbolSemanticVisitor::visit(Module*) [0x10000a013]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:154 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(Module*) [0x100009e03]
/Users/gedaiu/workspace/ldc/dmd/dmodule.d:1245 Module::accept(Visitor*) [0x100199d1b]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1625 DsymbolSemanticVisitor::visit(Import*) [0x1000084f3]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:115 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(Import*) [0x100007cf3]
/Users/gedaiu/workspace/ldc/dmd/dimport.d:181 Import::accept(Visitor*) [0x1002d16bf]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1987 void dmd.dsymbolsem.DsymbolSemanticVisitor.visit(dmd.dmodule.Module).__lambda_L1984_C35!(dmd.dsymbol.Dsymbol).__lambda_L1984_C35(dmd.dsymbol.Dsymbol) [0x10026bdfb]
/Users/gedaiu/workspace/ldc/dmd/dsymbol.d:111 void dmd.dsymbol.foreachDsymbol(dmd.root.array.Array!(dmd.dsymbol.Dsymbol).Array*, void delegate(dmd.dsymbol.Dsymbol)) [0x100065773]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1984 DsymbolSemanticVisitor::visit(Module*) [0x10000a013]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:154 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(Module*) [0x100009e03]
/Users/gedaiu/workspace/ldc/dmd/dmodule.d:1245 Module::accept(Visitor*) [0x100199d1b]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1625 DsymbolSemanticVisitor::visit(Import*) [0x1000084f3]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:115 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(Import*) [0x100007cf3]
/Users/gedaiu/workspace/ldc/dmd/dimport.d:181 Import::accept(Visitor*) [0x1002d16bf]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1987 void dmd.dsymbolsem.DsymbolSemanticVisitor.visit(dmd.dmodule.Module).__lambda_L1984_C35!(dmd.dsymbol.Dsymbol).__lambda_L1984_C35(dmd.dsymbol.Dsymbol) [0x10026bdfb]
/Users/gedaiu/workspace/ldc/dmd/dsymbol.d:111 void dmd.dsymbol.foreachDsymbol(dmd.root.array.Array!(dmd.dsymbol.Dsymbol).Array*, void delegate(dmd.dsymbol.Dsymbol)) [0x100065773]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1984 DsymbolSemanticVisitor::visit(Module*) [0x10000a013]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:154 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(Module*) [0x100009e03]
/Users/gedaiu/workspace/ldc/dmd/dmodule.d:1245 Module::accept(Visitor*) [0x100199d1b]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1625 DsymbolSemanticVisitor::visit(Import*) [0x1000084f3]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:115 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(Import*) [0x100007cf3]
/Users/gedaiu/workspace/ldc/dmd/dimport.d:181 Import::accept(Visitor*) [0x1002d16bf]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1987 void dmd.dsymbolsem.DsymbolSemanticVisitor.visit(dmd.dmodule.Module).__lambda_L1984_C35!(dmd.dsymbol.Dsymbol).__lambda_L1984_C35(dmd.dsymbol.Dsymbol) [0x10026bdfb]
/Users/gedaiu/workspace/ldc/dmd/dsymbol.d:111 void dmd.dsymbol.foreachDsymbol(dmd.root.array.Array!(dmd.dsymbol.Dsymbol).Array*, void delegate(dmd.dsymbol.Dsymbol)) [0x100065773]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:1984 DsymbolSemanticVisitor::visit(Module*) [0x10000a013]
/Users/gedaiu/workspace/ldc/driver/timetrace_sema.d:154 SemanticTimeTraceVisitor<DsymbolSemanticVisitor*>::visit(Module*) [0x100009e03]
/Users/gedaiu/workspace/ldc/dmd/dmodule.d:1245 Module::accept(Visitor*) [0x100199d1b]
/Users/gedaiu/workspace/ldc/dmd/dsymbolsem.d:96 void dmd.dsymbolsem.dsymbolSemantic(dmd.dsymbol.Dsymbol, dmd.dscope.Scope*) [0x10004bae7]
/Users/gedaiu/workspace/ldc/dmd/main.d:643 mars_tryMain(Param&, Array<char const*>&) [0x1001800e3]
/Users/gedaiu/workspace/ldc/driver/main.cpp:1232 cppmain() [0x10062d547]
/Users/gedaiu/workspace/ldc/driver/main.d:27 _Dmain [0x1000248b7]
Process 91478 exited with status = 1 (0x00000001) ```

it looks like i hit an `assert(0)`:
void visit(AST.Parameter) { assert(0); }

March 03

On Monday, 3 March 2025 at 21:33:17 UTC, Bogdan wrote:

>

I managed to get a stack trace from my error:

I would suggest to post it either to LDC group or to LDC github issue, so Kinke and other LDC team can check it