<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang crashes on x86_64-linux-gnu with Assertion `Us < (1u << NumUserOperandsBits) && "Too many operands"' failed."
href="https://bugs.llvm.org/show_bug.cgi?id=35118">35118</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang crashes on x86_64-linux-gnu with Assertion `Us < (1u << NumUserOperandsBits) && "Too many operands"' failed.
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>helloqirun@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>$ clang-trunk -v
clang version 6.0.0 (trunk 316829)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
$ clang-trunk -c abc.c
clang-6.0: /home/absozero/trunk/llvm/lib/IR/User.cpp:116: static void*
llvm::User::allocateFixedOperandUser(size_t, unsigned int, unsigned int):
Assertion `Us < (1u << NumUserOperandsBits) && "Too many operands"' failed.
#0 0x00000000020c308a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x20c308a)
#1 0x00000000020c0f2e llvm::sys::RunSignalHandlers()
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x20c0f2e)
#2 0x00000000020c1082 SignalHandler(int)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x20c1082)
#3 0x00007fd5c5b7c330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#4 0x00007fd5c46f9c37 gsignal
/build/eglibc-oGUzwX/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007fd5c46fd028 abort
/build/eglibc-oGUzwX/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007fd5c46f2bf6 __assert_fail_base
/build/eglibc-oGUzwX/eglibc-2.19/assert/assert.c:92:0
#7 0x00007fd5c46f2ca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#8 0x0000000001c2f806 (/home/absozero/trunk/root-clang/bin/clang-6.0+0x1c2f806)
#9 0x0000000001b6048a
llvm::ConstantUniqueMap<llvm::ConstantArray>::getOrCreate(llvm::ArrayType*,
llvm::ConstantAggrKeyType<llvm::ConstantArray>)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x1b6048a)
#10 0x0000000001b6068b llvm::ConstantArray::get(llvm::ArrayType*,
llvm::ArrayRef<llvm::Constant*>)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x1b6068b)
#11 0x0000000002299cbb clang::StmtVisitorBase<clang::make_ptr, (anonymous
namespace)::ConstExprEmitter, llvm::Constant*,
clang::QualType>::Visit(clang::Stmt*, clang::QualType)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x2299cbb)
#12 0x0000000002297b93
clang::CodeGen::ConstantEmitter::tryEmitPrivate(clang::Expr const*,
clang::QualType) (/home/absozero/trunk/root-clang/bin/clang-6.0+0x2297b93)
#13 0x0000000002297d76
clang::CodeGen::ConstantEmitter::tryEmitPrivateForMemory(clang::Expr const*,
clang::QualType) (/home/absozero/trunk/root-clang/bin/clang-6.0+0x2297d76)
#14 0x00000000022998e1 clang::StmtVisitorBase<clang::make_ptr, (anonymous
namespace)::ConstExprEmitter, llvm::Constant*,
clang::QualType>::Visit(clang::Stmt*, clang::QualType)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22998e1)
#15 0x0000000002299f09
clang::CodeGen::ConstantEmitter::tryEmitPrivateForVarInit(clang::VarDecl
const&) (/home/absozero/trunk/root-clang/bin/clang-6.0+0x2299f09)
#16 0x000000000229a012
clang::CodeGen::ConstantEmitter::tryEmitAbstractForInitializer(clang::VarDecl
const&) (/home/absozero/trunk/root-clang/bin/clang-6.0+0x229a012)
#17 0x00000000023fec78
clang::CodeGen::CodeGenFunction::EmitAutoVarInit(clang::CodeGen::CodeGenFunction::AutoVarEmission
const&) (/home/absozero/trunk/root-clang/bin/clang-6.0+0x23fec78)
#18 0x0000000002402932
clang::CodeGen::CodeGenFunction::EmitAutoVarDecl(clang::VarDecl const&)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x2402932)
#19 0x0000000002402a16
clang::CodeGen::CodeGenFunction::EmitVarDecl(clang::VarDecl const&)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x2402a16)
#20 0x0000000002402d94 clang::CodeGen::CodeGenFunction::EmitDecl(clang::Decl
const&) (/home/absozero/trunk/root-clang/bin/clang-6.0+0x2402d94)
#21 0x00000000022a716f
clang::CodeGen::CodeGenFunction::EmitDeclStmt(clang::DeclStmt const&)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22a716f)
#22 0x00000000022b4362
clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b4362)
#23 0x00000000022b0130 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt
const*, llvm::ArrayRef<clang::Attr const*>)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b0130)
#24 0x00000000022b12db
clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b12db)
#25 0x00000000022b15b4
clang::CodeGen::CodeGenFunction::EmitCompoundStmt(clang::CompoundStmt const&,
bool, clang::CodeGen::AggValueSlot)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b15b4)
#26 0x00000000022b43c3
clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b43c3)
#27 0x00000000022b0130 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt
const*, llvm::ArrayRef<clang::Attr const*>)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b0130)
#28 0x00000000022b12db
clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b12db)
#29 0x00000000022b15b4
clang::CodeGen::CodeGenFunction::EmitCompoundStmt(clang::CompoundStmt const&,
bool, clang::CodeGen::AggValueSlot)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b15b4)
#30 0x00000000022b43c3
clang::CodeGen::CodeGenFunction::EmitSimpleStmt(clang::Stmt const*)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b43c3)
#31 0x00000000022b0130 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt
const*, llvm::ArrayRef<clang::Attr const*>)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b0130)
#32 0x00000000022b12db
clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22b12db)
#33 0x00000000022e53f0
clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::CodeGen::FunctionArgList&,
clang::Stmt const*) (/home/absozero/trunk/root-clang/bin/clang-6.0+0x22e53f0)
#34 0x00000000022f222e
clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl,
llvm::Function*, clang::CodeGen::CGFunctionInfo const&)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x22f222e)
#35 0x0000000002311358
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/home/absozero/trunk/root-clang/bin/clang-6.0+0x2311358)
#36 0x0000000002321ec7
clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/home/absozero/trunk/root-clang/bin/clang-6.0+0x2321ec7)
#37 0x0000000002322d1a
clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x2322d1a)
#38 0x000000000232350a
clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) [clone
.part.6149] [clone .constprop.6154]
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x232350a)
#39 0x0000000002a96afb (anonymous
namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x2a96afb)
#40 0x0000000002a8d87b
clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x2a8d87b)
#41 0x0000000002c75356 clang::ParseAST(clang::Sema&, bool, bool)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x2c75356)
#42 0x0000000002a943ec clang::CodeGenAction::ExecuteAction()
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x2a943ec)
#43 0x000000000262981e clang::FrontendAction::Execute()
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x262981e)
#44 0x00000000025f8c86
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x25f8c86)
#45 0x00000000026bc363
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x26bc363)
#46 0x0000000000a528a8 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/home/absozero/trunk/root-clang/bin/clang-6.0+0xa528a8)
#47 0x00000000009cf245 main
(/home/absozero/trunk/root-clang/bin/clang-6.0+0x9cf245)
#48 0x00007fd5c46e4f45 __libc_start_main
/build/eglibc-oGUzwX/eglibc-2.19/csu/libc-start.c:321:0
#49 0x0000000000a4edb9 _start
(/home/absozero/trunk/root-clang/bin/clang-6.0+0xa4edb9)
Stack dump:
0. Program arguments: /home/absozero/trunk/root-clang/bin/clang-6.0 -cc1
-triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all -disable-free
-main-file-name abc.c -mrelocation-model static -mthread-model posix
-mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases
-munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info
-debugger-tuning=gdb -coverage-notes-file
/home/absozero/projects/reduction/crash/abc.gcno -resource-dir
/home/absozero/trunk/root-clang/lib/clang/6.0.0 -internal-isystem
/usr/local/include -internal-isystem
/home/absozero/trunk/root-clang/lib/clang/6.0.0/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include
-fdebug-compilation-dir /home/absozero/projects/reduction/crash -ferror-limit
19 -fmessage-length 172 -fobjc-runtime=gcc -fdiagnostics-show-option
-fcolor-diagnostics -o abc.o -x c abc.c
1. <eof> parser at end of file
2. abc.c:1:6: LLVM IR generation of declaration 'fn1'
3. abc.c:1:6: Generating code for declaration 'fn1'
4. abc.c:2:3: LLVM IR generation of compound statement ('{}')
5. abc.c:3:5: LLVM IR generation of compound statement ('{}')
clang-6.0: error: unable to execute command: Aborted (core dumped)
clang-6.0: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 6.0.0 (trunk 316829)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/bin
clang-6.0: note: diagnostic msg: PLEASE submit a bug report to
<a href="http://llvm.org/bugs/">http://llvm.org/bugs/</a> and include the crash backtrace, preprocessed source, and
associated run script.
clang-6.0: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-6.0: note: diagnostic msg: /tmp/abc-db7b2c.c
clang-6.0: note: diagnostic msg: /tmp/abc-db7b2c.sh
clang-6.0: note: diagnostic msg:
********************
$ cat abc.c
void fn1() {
{
{ int a[][757177340][1] = {{{6}}}; }
}
}</pre>
</div>
</p>
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