Clang Crash: Assertion NumBits <= MAX_INT_BITS failed in IntegerType::get with large ext_vector_type

[Theaamadu]

Compiler Explorer: https://godbolt.org/z/9fE8sP7PG

• It crashed on clang Trunk
• generated by fuzzer

Console:

typedef _Bool bool512 __attribute__((ext_vector_type(187553262)));

bool512 b;

Assertion:

clang: /root/llvm-project/llvm/lib/IR/Type.cpp:321: static llvm::IntegerType* llvm::IntegerType::get(llvm::LLVMContext&, unsigned int): Assertion `NumBits <= MAX_INT_BITS && "bitwidth too large"' failed.

Backtrace:

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 -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 <source>
1.	<eof> parser at end of file
 #0 0x0000000004224288 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4224288)
 #1 0x00000000042216b4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x42216b4)
 #2 0x0000000004165908 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #3 0x000072a639c42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #4 0x000072a639c969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #5 0x000072a639c42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #6 0x000072a639c287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #7 0x000072a639c2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #8 0x000072a639c39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #9 0x0000000003b93fea llvm::IntegerType::get(llvm::LLVMContext&, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3b93fea)
#10 0x00000000045db4a1 clang::CodeGen::CodeGenModule::EmitNullConstant(clang::QualType) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x45db4a1)
#11 0x00000000047da037 clang::CodeGen::CodeGenModule::EmitGlobalVarDefinition(clang::VarDecl const*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x47da037)
#12 0x00000000047dac03 clang::CodeGen::CodeGenModule::EmitTentativeDefinition(clang::VarDecl const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x47dac03)
#13 0x0000000006acc9a6 clang::Sema::ActOnEndOfTranslationUnit() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6acc9a6)
#14 0x0000000006933ff5 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, clang::Sema::ModuleImportState&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6933ff5)
#15 0x00000000069155aa clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x69155aa)
#16 0x0000000004b6f288 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4b6f288)
#17 0x0000000004e5c665 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4e5c665)
#18 0x0000000004ddd63e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4ddd63e)
#19 0x0000000004f5369d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4f5369d)
#20 0x0000000000dcf7b0 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdcf7b0)
#21 0x0000000000dc631a ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&, llvm::ToolContext const&, llvm::IntrusiveRefCntPtr<llvm::vfs::FileSystem>) driver.cpp:0:0
#22 0x0000000000dc649d int llvm::function_ref<int (llvm::SmallVectorImpl<char const*>&)>::callback_fn<clang_main(int, char**, llvm::ToolContext const&)::'lambda'(llvm::SmallVectorImpl<char const*>&)>(long, llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
#23 0x0000000004bd8649 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
#24 0x0000000004165da4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4165da4)
#25 0x0000000004bd8c5f 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
#26 0x0000000004b99d72 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4b99d72)
#27 0x0000000004b9ad1e 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+0x4b9ad1e)
#28 0x0000000004ba2455 clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4ba2455)
#29 0x0000000000dcbcd9 clang_main(int, char**, llvm::ToolContext const&) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdcbcd9)
#30 0x0000000000c7a954 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xc7a954)
#31 0x000072a639c29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#32 0x000072a639c29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#33 0x0000000000dc5db5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdc5db5)
clang: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134

Code:

typedef _Bool bool512 __attribute__((ext_vector_type(187553262)));
bool512 b;

[llvmbot]

@llvm/issue-subscribers-clang-codegen

Author: None (Theaamadu)

## Compiler Explorer: https://godbolt.org/z/9fE8sP7PG - It crashed on clang `Trunk` - generated by fuzzer

Console:

Compiler Explorer logo
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C
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C
123
typedef _Bool bool512 __attribute__((ext_vector_type(187553262)));

bool512 b;

x86-64 clang (assertions trunk)
x86-64 clang (assertions trunk)
Compiler options...
123
<Compilation failed>

# For more information see the output window
x86-64 clang (assertions trunk) - cached
clang: /root/llvm-project/llvm/lib/IR/Type.cpp:321: static llvm::IntegerType* llvm::IntegerType::get(llvm::LLVMContext&, unsigned int): Assertion `NumBits <= MAX_INT_BITS && "bitwidth too large"' 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 -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 <source>
1.	<eof> parser at end of file
 #<!-- -->0 0x0000000004224288 llvm::sys::PrintStackTrace(llvm::raw_ostream&amp;, int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4224288)
 #<!-- -->1 0x00000000042216b4 llvm::sys::CleanupOnSignal(unsigned long) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x42216b4)
 #<!-- -->2 0x0000000004165908 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
 #<!-- -->3 0x000072a639c42520 (/lib/x86_64-linux-gnu/libc.so.6+0x42520)
 #<!-- -->4 0x000072a639c969fc pthread_kill (/lib/x86_64-linux-gnu/libc.so.6+0x969fc)
 #<!-- -->5 0x000072a639c42476 gsignal (/lib/x86_64-linux-gnu/libc.so.6+0x42476)
 #<!-- -->6 0x000072a639c287f3 abort (/lib/x86_64-linux-gnu/libc.so.6+0x287f3)
 #<!-- -->7 0x000072a639c2871b (/lib/x86_64-linux-gnu/libc.so.6+0x2871b)
 #<!-- -->8 0x000072a639c39e96 (/lib/x86_64-linux-gnu/libc.so.6+0x39e96)
 #<!-- -->9 0x0000000003b93fea llvm::IntegerType::get(llvm::LLVMContext&amp;, unsigned int) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x3b93fea)
#<!-- -->10 0x00000000045db4a1 clang::CodeGen::CodeGenModule::EmitNullConstant(clang::QualType) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x45db4a1)
#<!-- -->11 0x00000000047da037 clang::CodeGen::CodeGenModule::EmitGlobalVarDefinition(clang::VarDecl const*, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x47da037)
#<!-- -->12 0x00000000047dac03 clang::CodeGen::CodeGenModule::EmitTentativeDefinition(clang::VarDecl const*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x47dac03)
#<!-- -->13 0x0000000006acc9a6 clang::Sema::ActOnEndOfTranslationUnit() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6acc9a6)
#<!-- -->14 0x0000000006933ff5 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr&lt;clang::DeclGroupRef&gt;&amp;, clang::Sema::ModuleImportState&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x6933ff5)
#<!-- -->15 0x00000000069155aa clang::ParseAST(clang::Sema&amp;, bool, bool) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x69155aa)
#<!-- -->16 0x0000000004b6f288 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4b6f288)
#<!-- -->17 0x0000000004e5c665 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4e5c665)
#<!-- -->18 0x0000000004ddd63e clang::CompilerInstance::ExecuteAction(clang::FrontendAction&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4ddd63e)
#<!-- -->19 0x0000000004f5369d clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4f5369d)
#<!-- -->20 0x0000000000dcf7b0 cc1_main(llvm::ArrayRef&lt;char const*&gt;, char const*, void*) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdcf7b0)
#<!-- -->21 0x0000000000dc631a ExecuteCC1Tool(llvm::SmallVectorImpl&lt;char const*&gt;&amp;, llvm::ToolContext const&amp;, llvm::IntrusiveRefCntPtr&lt;llvm::vfs::FileSystem&gt;) driver.cpp:0:0
#<!-- -->22 0x0000000000dc649d int llvm::function_ref&lt;int (llvm::SmallVectorImpl&lt;char const*&gt;&amp;)&gt;::callback_fn&lt;clang_main(int, char**, llvm::ToolContext const&amp;)::'lambda'(llvm::SmallVectorImpl&lt;char const*&gt;&amp;)&gt;(long, llvm::SmallVectorImpl&lt;char const*&gt;&amp;) driver.cpp:0:0
#<!-- -->23 0x0000000004bd8649 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
#<!-- -->24 0x0000000004165da4 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref&lt;void ()&gt;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4165da4)
#<!-- -->25 0x0000000004bd8c5f 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
#<!-- -->26 0x0000000004b99d72 clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&amp;, clang::driver::Command const*&amp;, bool) const (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0x4b99d72)
#<!-- -->27 0x0000000004b9ad1e 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+0x4b9ad1e)
#<!-- -->28 0x0000000004ba2455 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+0x4ba2455)
#<!-- -->29 0x0000000000dcbcd9 clang_main(int, char**, llvm::ToolContext const&amp;) (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdcbcd9)
#<!-- -->30 0x0000000000c7a954 main (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xc7a954)
#<!-- -->31 0x000072a639c29d90 (/lib/x86_64-linux-gnu/libc.so.6+0x29d90)
#<!-- -->32 0x000072a639c29e40 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29e40)
#<!-- -->33 0x0000000000dc5db5 _start (/opt/compiler-explorer/clang-assertions-trunk/bin/clang+0xdc5db5)
clang: error: clang frontend command failed with exit code 134 (use -v to see invocation)
Compiler returned: 134

Code:

typedef _Bool bool512 __attribute__((ext_vector_type(187553262)));
bool512 b;

[shafik]

Please, take a little more care when copying the information into the report, the code should be in a separate block from the rest of the report. This allows us to just copy and paste the code using githubs copy tool-tip. It would also be helpful to have the command line also be in a separate block.

Looks like this goes back to clang-15.