[llvm-bugs] [Bug 50873] New: ICE on valid code: clang::CodeGen::CodeGenModule::GetWeakRefReference(const clang::ValueDecl*): Assertion `AA && "No alias?"' failed.
via llvm-bugs
llvm-bugs at lists.llvm.org
Fri Jun 25 14:16:59 PDT 2021
https://bugs.llvm.org/show_bug.cgi?id=50873
Bug ID: 50873
Summary: ICE on valid code:
clang::CodeGen::CodeGenModule::GetWeakRefReference(con
st clang::ValueDecl*): Assertion `AA && "No alias?"'
failed.
Product: clang
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: C
Assignee: unassignedclangbugs at nondot.org
Reporter: cnsun at uwaterloo.ca
CC: blitzrakete at gmail.com, dgregor at apple.com,
erik.pilkington at gmail.com, llvm-bugs at lists.llvm.org,
richard-llvm at metafoo.co.uk
GCC can compile the following test program.
$ clang-trunk -v
clang version 13.0.0 (https://github.com/llvm/llvm-project.git
ef906573a127cffef7cae75d5155c15a8a2a3a5e)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/cnsun/usr/bin
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/9
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/10
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$ cat mutant.c
static void test6_f() __attribute__((weakref("test3_f")));
void test6_f();
test6_foo() { test6_f; }
$ clang-trunk mutant.c
mutant.c:3:1: warning: type specifier missing, defaults to 'int'
[-Wimplicit-int]
test6_foo() { test6_f; }
^
mutant.c:3:15: warning: expression result unused [-Wunused-value]
test6_foo() { test6_f; }
^~~~~~~
mutant.c:3:24: warning: non-void function does not return a value
[-Wreturn-type]
test6_foo() { test6_f; }
^
clang-13:
/tmp/tmp.B1HwadcXIH-clang-builder/llvm-project/clang/lib/CodeGen/CodeGenModule.cpp:2814:
clang::CodeGen::ConstantAddress
clang::CodeGen::CodeGenModule::GetWeakRefReference(const clang::ValueDecl*):
Assertion `AA && "No alias?"' failed.
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace, preprocessed source, and associated run script.
Stack dump:
0. Program arguments: /scratch/software/clang-trunk/bin/clang-13 -cc1
-triple x86_64-unknown-linux-gnu -emit-obj -mrelax-all --mrelax-relocations
-disable-free -main-file-name mutant.c -mrelocation-model static
-mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases
-munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb
-fcoverage-compilation-dir=/scratch/cnsun/workspace/perses-fuzzer/default_c_finding_folder/crash_20210625_052330_0c3f/delta/perses_result
-resource-dir /scratch/software/clang-trunk/lib/clang/13.0.0 -c-isystem .
-c-isystem /usr/local/include/cmsith -internal-isystem
/scratch/software/clang-trunk/lib/clang/13.0.0/include -internal-isystem
/usr/local/include -internal-isystem
/usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include
-internal-externc-isystem /usr/include/x86_64-linux-gnu
-internal-externc-isystem /include -internal-externc-isystem /usr/include
-fdebug-compilation-dir=/scratch/cnsun/workspace/perses-fuzzer/default_c_finding_folder/crash_20210625_052330_0c3f/delta/perses_result
-ferror-limit 19 -fgnuc-version=4.2.1 -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1
-o /tmp/mutant-9d3406.o -x c mutant.c
1. <eof> parser at end of file
2. mutant.c:3:1: LLVM IR generation of declaration 'test6_foo'
3. mutant.c:3:1: Generating code for declaration 'test6_foo'
#0 0x000055e22f4ad1f4 PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
#1 0x000055e22f4aa9ae SignalHandler(int) Signals.cpp:0:0
#2 0x00007feae75153c0 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x153c0)
#3 0x00007feae6fb418b raise
/build/glibc-ZN95T4/glibc-2.31/signal/../sysdeps/unix/sysv/linux/raise.c:51:1
#4 0x00007feae6f93859 abort /build/glibc-ZN95T4/glibc-2.31/stdlib/abort.c:81:7
#5 0x00007feae6f93729 get_sysdep_segment_value
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:509:8
#6 0x00007feae6f93729 _nl_load_domain
/build/glibc-ZN95T4/glibc-2.31/intl/loadmsgcat.c:970:34
#7 0x00007feae6fa4f36 (/lib/x86_64-linux-gnu/libc.so.6+0x36f36)
#8 0x000055e22f9094ef
clang::CodeGen::CodeGenModule::GetWeakRefReference(clang::ValueDecl const*)
(/scratch/software/clang-trunk/bin/clang-13+0x3db54ef)
#9 0x000055e22fb5072d
clang::CodeGen::CodeGenFunction::EmitDeclRefLValue(clang::DeclRefExpr const*)
(/scratch/software/clang-trunk/bin/clang-13+0x3ffc72d)
#10 0x000055e22fb4bf39 clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr
const*) (/scratch/software/clang-trunk/bin/clang-13+0x3ff7f39)
#11 0x000055e22fb98ea4 (anonymous
namespace)::ScalarExprEmitter::VisitCastExpr(clang::CastExpr*)
CGExprScalar.cpp:0:0
#12 0x000055e22fb8fd5e (anonymous
namespace)::ScalarExprEmitter::Visit(clang::Expr*) CGExprScalar.cpp:0:0
#13 0x000055e22fb91d9a
clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool)
(/scratch/software/clang-trunk/bin/clang-13+0x403dd9a)
#14 0x000055e22fb39087 clang::CodeGen::CodeGenFunction::EmitAnyExpr(clang::Expr
const*, clang::CodeGen::AggValueSlot, bool)
(/scratch/software/clang-trunk/bin/clang-13+0x3fe5087)
#15 0x000055e22fb579fe
clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(clang::Expr const*)
(/scratch/software/clang-trunk/bin/clang-13+0x40039fe)
#16 0x000055e22f83c6ea clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt
const*, llvm::ArrayRef<clang::Attr const*>)
(/scratch/software/clang-trunk/bin/clang-13+0x3ce86ea)
#17 0x000055e22f842a8c
clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt
const&, bool, clang::CodeGen::AggValueSlot)
(/scratch/software/clang-trunk/bin/clang-13+0x3ceea8c)
#18 0x000055e22f899ed1
clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::Stmt const*)
(/scratch/software/clang-trunk/bin/clang-13+0x3d45ed1)
#19 0x000055e22f8ab72c
clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl,
llvm::Function*, clang::CodeGen::CGFunctionInfo const&)
(/scratch/software/clang-trunk/bin/clang-13+0x3d5772c)
#20 0x000055e22f905036
clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/scratch/software/clang-trunk/bin/clang-13+0x3db1036)
#21 0x000055e22f900bd5
clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl,
llvm::GlobalValue*) (/scratch/software/clang-trunk/bin/clang-13+0x3dacbd5)
#22 0x000055e22f90103b
clang::CodeGen::CodeGenModule::EmitGlobal(clang::GlobalDecl)
(/scratch/software/clang-trunk/bin/clang-13+0x3dad03b)
#23 0x000055e22f909aa2
clang::CodeGen::CodeGenModule::EmitTopLevelDecl(clang::Decl*) (.part.0)
CodeGenModule.cpp:0:0
#24 0x000055e23060c2d9 (anonymous
namespace)::CodeGeneratorImpl::HandleTopLevelDecl(clang::DeclGroupRef)
ModuleBuilder.cpp:0:0
#25 0x000055e2305fe4c0
clang::BackendConsumer::HandleTopLevelDecl(clang::DeclGroupRef)
(/scratch/software/clang-trunk/bin/clang-13+0x4aaa4c0)
#26 0x000055e2316c2174 clang::ParseAST(clang::Sema&, bool, bool)
(/scratch/software/clang-trunk/bin/clang-13+0x5b6e174)
#27 0x000055e230609458 clang::CodeGenAction::ExecuteAction()
(/scratch/software/clang-trunk/bin/clang-13+0x4ab5458)
#28 0x000055e22feb89e9 clang::FrontendAction::Execute()
(/scratch/software/clang-trunk/bin/clang-13+0x43649e9)
#29 0x000055e22fe4bc36
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&)
(/scratch/software/clang-trunk/bin/clang-13+0x42f7c36)
#30 0x000055e22ff96870
clang::ExecuteCompilerInvocation(clang::CompilerInstance*)
(/scratch/software/clang-trunk/bin/clang-13+0x4442870)
#31 0x000055e22cdb6696 cc1_main(llvm::ArrayRef<char const*>, char const*,
void*) (/scratch/software/clang-trunk/bin/clang-13+0x1262696)
#32 0x000055e22cdb29d8 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&)
driver.cpp:0:0
#33 0x000055e22cce00e6 main
(/scratch/software/clang-trunk/bin/clang-13+0x118c0e6)
#34 0x00007feae6f950b3 __libc_start_main
/build/glibc-ZN95T4/glibc-2.31/csu/../csu/libc-start.c:342:3
#35 0x000055e22cdb254e _start
(/scratch/software/clang-trunk/bin/clang-13+0x125e54e)
clang-13: error: unable to execute command: Aborted (core dumped)
clang-13: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 13.0.0 (https://github.com/llvm/llvm-project.git
ef906573a127cffef7cae75d5155c15a8a2a3a5e)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/cnsun/usr/bin
clang-13: note: diagnostic msg:
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-13: note: diagnostic msg: /tmp/mutant-cc88e3.c
clang-13: note: diagnostic msg: /tmp/mutant-cc88e3.sh
clang-13: note: diagnostic msg:
********************
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