[clang][bytecode] Assertion `isIntegralPointer()' failed.

[k-arrows]

Reproducer:
https://godbolt.org/z/dKzv83M1a

#include <cxxabi.h>
#include <typeinfo>

int foo() {
    auto& pti = static_cast<const abi::__pointer_type_info&>(
        typeid(const int(*)[3])
    );
    return pti.__flags == 0 ? 1 : 0;
}

Backtrace:

clang++: /root/llvm-project/llvm/tools/clang/lib/AST/ByteCode/Pointer.h:474: const clang::interp::IntPointer& clang::interp::Pointer::asIntPointer() const: Assertion `isIntegralPointer()' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.	Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics -fexperimental-new-constant-interpreter <source>
1.	<source>:8:36: current parser token ';'
2.	<source>:4:11: parsing function body 'foo'
3.	<source>:4:11: in compound statement ('{}')
 #0 0x0000000004022128 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4022128)
 #1 0x000000000401f554 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x401f554)
 #2 0x0000000003f63e08 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x0000773663842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x00007736638969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x0000773663842476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x00007736638287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x000077366382871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x0000773663839e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x0000000007a46144 clang::interp::EvalEmitter::emitGetPtrBasePop(unsigned int, bool, clang::interp::SourceInfo const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7a46144)
#10 0x0000000007e2f866 clang::interp::Compiler<clang::interp::EvalEmitter>::VisitCastExpr(clang::CastExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e2f866)
#11 0x0000000007e2ece0 clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e2ece0)
#12 0x0000000007e34787 clang::interp::Compiler<clang::interp::EvalEmitter>::VisitMemberExpr(clang::MemberExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e34787)
#13 0x0000000007e2ece0 clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e2ece0)
#14 0x0000000007e303e5 clang::interp::Compiler<clang::interp::EvalEmitter>::VisitCastExpr(clang::CastExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e303e5)
#15 0x0000000007e2ece0 clang::interp::Compiler<clang::interp::EvalEmitter>::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e2ece0)
#16 0x0000000007e23c8a clang::interp::Compiler<clang::interp::EvalEmitter>::visitExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e23c8a)
#17 0x00000000079bac71 clang::interp::EvalEmitter::interpretExpr(clang::Expr const*, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x79bac71)
#18 0x00000000079ae2af clang::interp::Context::evaluateAsRValue(clang::interp::State&, clang::Expr const*, clang::APValue&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x79ae2af)
#19 0x0000000007928063 EvaluateAsRValue((anonymous namespace)::EvalInfo&, clang::Expr const*, clang::APValue&) ExprConstant.cpp:0:0
#20 0x000000000792a343 clang::Expr::isCXX11ConstantExpr(clang::ASTContext const&, clang::APValue*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x792a343)
#21 0x000000000792a670 EvaluateCPlusPlus11IntegralConstantExpr(clang::ASTContext const&, clang::Expr const*, llvm::APSInt*) ExprConstant.cpp:0:0
#22 0x000000000792e47f clang::Expr::getIntegerConstantExpr(clang::ASTContext const&) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x792e47f)
#23 0x000000000695db7a AnalyzeImplicitConversions(clang::Sema&, clang::Expr*, clang::SourceLocation, bool) (.constprop.0) SemaChecking.cpp:0:0
#24 0x000000000695c6a8 CheckConditionalOperator(clang::Sema&, clang::AbstractConditionalOperator*, clang::SourceLocation, clang::QualType) SemaChecking.cpp:0:0
#25 0x000000000695cdde AnalyzeImplicitConversions(clang::Sema&, clang::Expr*, clang::SourceLocation, bool) (.constprop.0) SemaChecking.cpp:0:0
#26 0x000000000695e77d clang::Sema::CheckCompletedExpr(clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x695e77d)
#27 0x0000000006cde267 clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6cde267)
#28 0x0000000007003e7e clang::Sema::BuildReturnStmt(clang::SourceLocation, clang::Expr*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7003e7e)
#29 0x0000000007004c18 clang::Sema::ActOnReturnStmt(clang::SourceLocation, clang::Expr*, clang::Scope*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7004c18)
#30 0x00000000067de25a clang::Parser::ParseReturnStatement() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67de25a)
#31 0x00000000067e22e1 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&, clang::ParsedAttributes&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67e22e1)
#32 0x00000000067e3749 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector<clang::Stmt*, 24u>&, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67e3749)
#33 0x00000000067eb89b clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67eb89b)
#34 0x00000000067ec0aa clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67ec0aa)
#35 0x00000000066e26a3 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66e26a3)
#36 0x0000000006718a7d clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::ParsedAttributes&, clang::Parser::ParsedTemplateInfo&, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6718a7d)
#37 0x00000000066d52fe clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec&, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66d52fe)
#38 0x00000000066d5a9f clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66d5a9f)
#39 0x00000000066dd8fa clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&, clang::ParsedAttributes&, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66dd8fa)
#40 0x00000000066de895 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66de895)
#41 0x00000000066d03fa clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66d03fa)
#42 0x00000000049c4218 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49c4218)
#43 0x0000000004cb8795 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4cb8795)
#44 0x0000000004c34aae clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c34aae)
#45 0x0000000004daa3b1 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4daa3b1)
#46 0x0000000000daf54f cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdaf54f)
#47 0x0000000000da61fa ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&) driver.cpp:0:0
#48 0x0000000004a2bc09 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#49 0x0000000003f642a4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3f642a4)
#50 0x0000000004a2c21f clang::driver::CC1Command::Execute(llvm::ArrayRef<std::optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#51 0x00000000049ee4bd clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49ee4bd)
#52 0x00000000049ef54e clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49ef54e)
#53 0x00000000049f6f95 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49f6f95)
#54 0x0000000000daba05 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdaba05)
#55 0x0000000000c5fa04 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc5fa04)
#56 0x0000773663829d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#57 0x0000773663829e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#58 0x0000000000da5ca5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xda5ca5)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: None (k-arrows)

Reproducer: https://godbolt.org/z/dKzv83M1a ```cpp #include <cxxabi.h> #include <typeinfo>

int foo() {
auto& pti = static_cast<const abi::__pointer_type_info&>(
typeid(const int(*)[3])
);
return pti.__flags == 0 ? 1 : 0;
}

Backtrace:
```console
clang++: /root/llvm-project/llvm/tools/clang/lib/AST/ByteCode/Pointer.h:474: const clang::interp::IntPointer& clang::interp::Pointer::asIntPointer() const: Assertion `isIntegralPointer()' failed.
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace, preprocessed source, and associated run script.
Stack dump:
0.	Program arguments: /opt/compiler-explorer/clang-assertions-trunk/bin/clang++ -gdwarf-4 -g -o /app/output.s -mllvm --x86-asm-syntax=intel -fno-verbose-asm -S --gcc-toolchain=/opt/compiler-explorer/gcc-snapshot -fcolor-diagnostics -fno-crash-diagnostics -fexperimental-new-constant-interpreter <source>
1.	<source>:8:36: current parser token ';'
2.	<source>:4:11: parsing function body 'foo'
3.	<source>:4:11: in compound statement ('{}')
 #<!-- -->0 0x0000000004022128 llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4022128)
 #<!-- -->1 0x000000000401f554 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x401f554)
 #<!-- -->2 0x0000000003f63e08 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #<!-- -->3 0x0000773663842520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #<!-- -->4 0x00007736638969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #<!-- -->5 0x0000773663842476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #<!-- -->6 0x00007736638287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #<!-- -->7 0x000077366382871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #<!-- -->8 0x0000773663839e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #<!-- -->9 0x0000000007a46144 clang::interp::EvalEmitter::emitGetPtrBasePop(unsigned int, bool, clang::interp::SourceInfo const&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7a46144)
#<!-- -->10 0x0000000007e2f866 clang::interp::Compiler&lt;clang::interp::EvalEmitter&gt;::VisitCastExpr(clang::CastExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e2f866)
#<!-- -->11 0x0000000007e2ece0 clang::interp::Compiler&lt;clang::interp::EvalEmitter&gt;::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e2ece0)
#<!-- -->12 0x0000000007e34787 clang::interp::Compiler&lt;clang::interp::EvalEmitter&gt;::VisitMemberExpr(clang::MemberExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e34787)
#<!-- -->13 0x0000000007e2ece0 clang::interp::Compiler&lt;clang::interp::EvalEmitter&gt;::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e2ece0)
#<!-- -->14 0x0000000007e303e5 clang::interp::Compiler&lt;clang::interp::EvalEmitter&gt;::VisitCastExpr(clang::CastExpr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e303e5)
#<!-- -->15 0x0000000007e2ece0 clang::interp::Compiler&lt;clang::interp::EvalEmitter&gt;::visit(clang::Expr const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e2ece0)
#<!-- -->16 0x0000000007e23c8a clang::interp::Compiler&lt;clang::interp::EvalEmitter&gt;::visitExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7e23c8a)
#<!-- -->17 0x00000000079bac71 clang::interp::EvalEmitter::interpretExpr(clang::Expr const*, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x79bac71)
#<!-- -->18 0x00000000079ae2af clang::interp::Context::evaluateAsRValue(clang::interp::State&amp;, clang::Expr const*, clang::APValue&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x79ae2af)
#<!-- -->19 0x0000000007928063 EvaluateAsRValue((anonymous namespace)::EvalInfo&amp;, clang::Expr const*, clang::APValue&amp;) ExprConstant.cpp:0:0
#<!-- -->20 0x000000000792a343 clang::Expr::isCXX11ConstantExpr(clang::ASTContext const&amp;, clang::APValue*) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x792a343)
#<!-- -->21 0x000000000792a670 EvaluateCPlusPlus11IntegralConstantExpr(clang::ASTContext const&amp;, clang::Expr const*, llvm::APSInt*) ExprConstant.cpp:0:0
#<!-- -->22 0x000000000792e47f clang::Expr::getIntegerConstantExpr(clang::ASTContext const&amp;) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x792e47f)
#<!-- -->23 0x000000000695db7a AnalyzeImplicitConversions(clang::Sema&amp;, clang::Expr*, clang::SourceLocation, bool) (.constprop.0) SemaChecking.cpp:0:0
#<!-- -->24 0x000000000695c6a8 CheckConditionalOperator(clang::Sema&amp;, clang::AbstractConditionalOperator*, clang::SourceLocation, clang::QualType) SemaChecking.cpp:0:0
#<!-- -->25 0x000000000695cdde AnalyzeImplicitConversions(clang::Sema&amp;, clang::Expr*, clang::SourceLocation, bool) (.constprop.0) SemaChecking.cpp:0:0
#<!-- -->26 0x000000000695e77d clang::Sema::CheckCompletedExpr(clang::Expr*, clang::SourceLocation, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x695e77d)
#<!-- -->27 0x0000000006cde267 clang::Sema::ActOnFinishFullExpr(clang::Expr*, clang::SourceLocation, bool, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6cde267)
#<!-- -->28 0x0000000007003e7e clang::Sema::BuildReturnStmt(clang::SourceLocation, clang::Expr*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7003e7e)
#<!-- -->29 0x0000000007004c18 clang::Sema::ActOnReturnStmt(clang::SourceLocation, clang::Expr*, clang::Scope*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x7004c18)
#<!-- -->30 0x00000000067de25a clang::Parser::ParseReturnStatement() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67de25a)
#<!-- -->31 0x00000000067e22e1 clang::Parser::ParseStatementOrDeclarationAfterAttributes(llvm::SmallVector&lt;clang::Stmt*, 24u&gt;&amp;, clang::Parser::ParsedStmtContext, clang::SourceLocation*, clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67e22e1)
#<!-- -->32 0x00000000067e3749 clang::Parser::ParseStatementOrDeclaration(llvm::SmallVector&lt;clang::Stmt*, 24u&gt;&amp;, clang::Parser::ParsedStmtContext, clang::SourceLocation*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67e3749)
#<!-- -->33 0x00000000067eb89b clang::Parser::ParseCompoundStatementBody(bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67eb89b)
#<!-- -->34 0x00000000067ec0aa clang::Parser::ParseFunctionStatementBody(clang::Decl*, clang::Parser::ParseScope&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x67ec0aa)
#<!-- -->35 0x00000000066e26a3 clang::Parser::ParseFunctionDefinition(clang::ParsingDeclarator&amp;, clang::Parser::ParsedTemplateInfo const&amp;, clang::Parser::LateParsedAttrList*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66e26a3)
#<!-- -->36 0x0000000006718a7d clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&amp;, clang::DeclaratorContext, clang::ParsedAttributes&amp;, clang::Parser::ParsedTemplateInfo&amp;, clang::SourceLocation*, clang::Parser::ForRangeInit*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x6718a7d)
#<!-- -->37 0x00000000066d52fe clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec&amp;, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66d52fe)
#<!-- -->38 0x00000000066d5a9f clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec*, clang::AccessSpecifier) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66d5a9f)
#<!-- -->39 0x00000000066dd8fa clang::Parser::ParseExternalDeclaration(clang::ParsedAttributes&amp;, clang::ParsedAttributes&amp;, clang::ParsingDeclSpec*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66dd8fa)
#<!-- -->40 0x00000000066de895 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr&lt;clang::DeclGroupRef&gt;&amp;, clang::Sema::ModuleImportState&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66de895)
#<!-- -->41 0x00000000066d03fa clang::ParseAST(clang::Sema&amp;, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x66d03fa)
#<!-- -->42 0x00000000049c4218 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49c4218)
#<!-- -->43 0x0000000004cb8795 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4cb8795)
#<!-- -->44 0x0000000004c34aae clang::CompilerInstance::ExecuteAction(clang::FrontendAction&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4c34aae)
#<!-- -->45 0x0000000004daa3b1 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x4daa3b1)
#<!-- -->46 0x0000000000daf54f cc1_main(llvm::ArrayRef&lt;char const*&gt;, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdaf54f)
#<!-- -->47 0x0000000000da61fa ExecuteCC1Tool(llvm::SmallVectorImpl&lt;char const*&gt;&amp;, llvm::ToolContext const&amp;) driver.cpp:0:0
#<!-- -->48 0x0000000004a2bc09 void llvm::function_ref&lt;void ()&gt;::callback_fn&lt;clang::driver::CC1Command::Execute(llvm::ArrayRef&lt;std::optional&lt;llvm::StringRef&gt;&gt;, std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt;&gt;*, bool*) const::'lambda'()&gt;(long) Job.cpp:0:0
#<!-- -->49 0x0000000003f642a4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref&lt;void ()&gt;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x3f642a4)
#<!-- -->50 0x0000000004a2c21f clang::driver::CC1Command::Execute(llvm::ArrayRef&lt;std::optional&lt;llvm::StringRef&gt;&gt;, std::__cxx11::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt;&gt;*, bool*) const (.part.0) Job.cpp:0:0
#<!-- -->51 0x00000000049ee4bd clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&amp;, clang::driver::Command const*&amp;, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49ee4bd)
#<!-- -->52 0x00000000049ef54e clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&amp;, llvm::SmallVectorImpl&lt;std::pair&lt;int, clang::driver::Command const*&gt;&gt;&amp;, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49ef54e)
#<!-- -->53 0x00000000049f6f95 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&amp;, llvm::SmallVectorImpl&lt;std::pair&lt;int, clang::driver::Command const*&gt;&gt;&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0x49f6f95)
#<!-- -->54 0x0000000000daba05 clang_main(int, char**, llvm::ToolContext const&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xdaba05)
#<!-- -->55 0x0000000000c5fa04 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xc5fa04)
#<!-- -->56 0x0000773663829d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#<!-- -->57 0x0000773663829e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#<!-- -->58 0x0000000000da5ca5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+++0xda5ca5)
clang++: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134

[k-arrows]

Goes back to clang-20.1.0:
https://godbolt.org/z/83enea6dc

[k-arrows]

It seems that the message shown when an assertion failure occurs has changed between the latest Clang and Clang 20.1.0. In the former, it is “Assertion isIntegralPointer() failed.”, but in the latter, it is “Assertion isBlockPointer() failed.”