[LLVMbugs] [Bug 10082] New: invalid cast assertion

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10082

           Summary: invalid cast assertion
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: marc.glisse at normalesup.org
                CC: llvmbugs at cs.uiuc.edu


clang++ -O2 a.cc -c
fails with an invalid cast assertion. This may or may not be related to bug
8769 (I discovered this one when I finally removed the workaround for 8769).

template<typename >     struct array     {
        float _M_instance[3] __attribute__((__aligned__));
        const float&       operator[](int __n) const       {
                return _M_instance[__n];
        }
};
struct PointC3 {
        array<float> base;
        const float & x() const   {
                return base[0];
        }
};
struct Point_3 : public PointC3 {
};
struct Equal_3   {
        bool     operator()(const PointC3 &p, const PointC3 &q) const     {
                return p.x() == q.x();
        }
};
Equal_3 equal_3_object();
inline bool operator==(const Point_3& p, const Point_3& q) {
        return equal_3_object()(p, q);
}
Point_3 f();
int main() {
        f() == f();
}





clang: /data/repos/llvm/lib/VMCore/Instructions.cpp:2079: static
llvm::CastInst* llvm::CastInst::Create(llvm::Instruction::CastOps,
llvm::Value*, const llvm::Type*, const llvm::Twine&, llvm::Instruction*):
Assertion `castIsValid(op, S, Ty) && "Invalid cast!"' failed.
0  clang           0x0000000001ab601f
1  clang           0x0000000001ab6b5a
2  libpthread.so.0 0x00007ff490785020
3  libc.so.6       0x00007ff48fa7f3d5 gsignal + 53
4  libc.so.6       0x00007ff48fa82650 abort + 384
5  libc.so.6       0x00007ff48fa78581 __assert_fail + 241
6  clang           0x00000000019bfcad
7  clang           0x00000000007fca66 llvm::IRBuilder<true,
llvm::ConstantFolder, llvm::IRBuilderDefaultInserter<true>
>::CreateCast(llvm::Instruction::CastOps, llvm::Value*, llvm::Type const*,
llvm::Twine const&) + 118
8  clang           0x0000000001779276
9  clang           0x0000000001779c84
10 clang           0x0000000001779b4c
11 clang           0x0000000001779a01
12 clang           0x000000000177e339
13 clang           0x0000000001780f49
14 clang           0x00000000019e296f
llvm::FPPassManager::runOnFunction(llvm::Function&) + 655
15 clang           0x0000000001862727
16 clang           0x0000000001864aee
17 clang           0x00000000019e2467
llvm::MPPassManager::runOnModule(llvm::Module&) + 551
18 clang           0x00000000019e25cb llvm::PassManagerImpl::run(llvm::Module&)
+ 187
19 clang           0x00000000007cf0f7
clang::EmitBackendOutput(clang::Diagnostic&, clang::CodeGenOptions const&,
clang::TargetOptions const&, llvm::Module*, clang::BackendAction,
llvm::raw_ostream*) + 2967
20 clang           0x00000000007cce8b
clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) + 251
21 clang           0x000000000092362f clang::ParseAST(clang::Sema&, bool) + 351
22 clang           0x00000000007cba94 clang::CodeGenAction::ExecuteAction() +
68
23 clang           0x00000000006ca233
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 371
24 clang           0x00000000006a306a
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1290
25 clang           0x000000000069783b cc1_main(char const**, char const**, char
const*, void*) + 779
26 clang           0x00000000006a1f43 main + 7667
27 libc.so.6       0x00007ff48fa6bead __libc_start_main + 253
28 clang           0x0000000000697349
Stack dump:
0.      Program arguments: /tmp/clang/inst/bin/clang -cc1 -triple
x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name a.cc
-mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases
-munwind-tables -target-cpu x86-64 -target-linker-version 2.21.51.20110523
-momit-leaf-frame-pointer -coverage-file a.o -resource-dir
/tmp/clang/inst/bin/../lib/clang/3.0 -O2 -fdeprecated-macro -ferror-limit 19
-fmessage-length 0 -fcxx-exceptions -fexceptions -fgnu-runtime
-fdiagnostics-show-option -o a.o -x c++ a.cc 
1.      <eof> parser at end of file
2.      Per-module optimization passes
3.      Running pass 'CallGraph Pass Manager' on module 'a.cc'.
4.      Running pass 'Scalar Replacement of Aggregates (SSAUp)' on function
'@main'
clang: error: unable to execute command: Aborted
clang: error: clang frontend command failed due to signal 2 (use -v to see
invocation)

-- 
Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.