Allow to build application with --debug #298

miry · 2025-03-16T13:56:47Z

miry
Mar 16, 2025

I noticed that backtraces are not visible during exceptions unless --debug mode is enabled.

However, when I try to enable --debug for my application, I encounter an issue. This problem can be reproduced using marten_cli as well.

`crystal build --debug src/marten_cli.cr`

$ crystal build --debug src/marten_cli.cr

BUG: called create_llvm_type for M (Exception)
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'raise<Exception>:NoReturn'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'raise<String>:NoReturn'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#create_llvm_type<Crystal::Type+, Bool>:NoReturn'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#llvm_type<Crystal::Type+, Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#create_llvm_type<Crystal::PointerInstanceType, Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#llvm_type<Crystal::Type+, Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#create_llvm_struct_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#llvm_struct_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#create_llvm_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#llvm_type<Crystal::Type+, Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#llvm_type<Crystal::Type+, Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#create_llvm_struct_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#llvm_struct_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#create_llvm_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#llvm_type<Crystal::Type+, Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#create_llvm_struct_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::LLVMTyper#llvm_struct_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Bool>:LLVM::Type'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<(Crystal::NilableReferenceUnionType | Crystal::ReferenceUnionType), Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<Crystal::MixedUnionType, Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<Crystal::PointerInstanceType, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<Crystal::PointerInstanceType, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<Crystal::PointerInstanceType, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_debug_type<(Crystal::GenericClassInstanceType+ | Crystal::GenericClassType+ | Crystal::GenericModuleInstanceType | Crystal::GenericModuleType | Crystal::NonGenericClassType | Crystal::NonGenericModuleType+ | Crystal::VirtualType), Crystal::Type+>:Pointer(Void)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#get_debug_type<Crystal::Type+, Crystal::Type+>:(LibLLVM::MetadataRef | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#codegen_fun<String, Crystal::Def+, Crystal::Type+, Bool, Crystal::CodeGenVisitor::ModuleInfo, Bool, Bool>:Crystal::LLVMTypedFunction'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#target_def_fun<Crystal::Def+, Crystal::Type+>:Crystal::LLVMTypedFunction'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::Call>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#create_initialize_class_var_function<Crystal::MetaTypeVar, Crystal::ClassVarInitializer>:(Crystal::LLVMTypedFunction | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#initialize_class_var<Crystal::MetaTypeVar>:(LLVM::Value | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::Expressions>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::ClassDef>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::ModuleDef>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::ModuleDef>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::ModuleDef>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::FileNode>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::Expressions>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::FileNode>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::CodeGenVisitor#visit<Crystal::Expressions>:Bool'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::ASTNode+@Crystal::ASTNode#accept<Crystal::CodeGenVisitor>:Nil'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::Compiler#codegen<Crystal::Program, Crystal::ASTNode+, Array(Crystal::Compiler::Source), String>:Array(Crystal::Compiler::CompilationUnit)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::Compiler#compile<Array(Crystal::Compiler::Source), String>:Crystal::Compiler::Result'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::Command#run:(Bool | Crystal::Repl::Value | Nil)'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in '__crystal_main'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'Crystal::main<Int32, Pointer(Pointer(UInt8))>:Int32'
  from /opt/homebrew/Cellar/crystal/1.15.1/bin/crystal in 'main'
Error: you've found a bug in the Crystal compiler. Please open an issue, including source code that will allow us to reproduce the bug: https://github.com/crystal-lang/crystal/issues

As I understand, this is a common issue in Crystal that requires improvements in type detection or macro handling.

Answered by ellmetha

Mar 23, 2025

Hey! I believe this is the same issue as #219. And yes, it appears to be an issue with Crystal.

View full answer

ellmetha · 2025-03-23T17:19:41Z

ellmetha
Mar 23, 2025
Maintainer

Hey! I believe this is the same issue as #219. And yes, it appears to be an issue with Crystal.

0 replies

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Allow to build application with --debug #298

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Allow to build application with --debug #298

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miry Mar 16, 2025

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ellmetha Mar 23, 2025 Maintainer

miry
Mar 16, 2025

ellmetha
Mar 23, 2025
Maintainer