[LLVMbugs] [Bug 20109] New: [AArch64] Compiler crash for function pointer access

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=20109

            Bug ID: 20109
           Summary: [AArch64] Compiler crash for function pointer access
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: weimingz at codeaurora.org
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

//extern void (*foo) (); //GOOD
extern void foo();

unsigned char test(unsigned char *c) {
      *(char*)&foo = 'A'; //BAD
      return *(char*)&foo; //BAD
}

clang-3.5   -Os test.c -c -target aarch64

clang-3.5: llvm/lib/IR/DataLayout.cpp:632: unsigned int
llvm::DataLayout::getAlignment(llvm::Type*, bool) const: Assertion
`Ty->isSized() && "Cannot getTypeInfo() on a type that is unsized!"' failed.
0  clang-3.5       0x0000000000cb8ad2 llvm::sys::PrintStackTrace(_IO_FILE*) +
34
1  clang-3.5       0x0000000000cb86f4
2  libpthread.so.0 0x00007f6e98f608f0
3  libc.so.6       0x00007f6e9823eb25 gsignal + 53
4  libc.so.6       0x00007f6e98242670 abort + 384
5  libc.so.6       0x00007f6e982379f1 __assert_fail + 241
6  clang-3.5       0x000000000099a365
llvm::DataLayout::getAlignment(llvm::Type*, bool) const + 117
7  clang-3.5       0x00000000007b8505
8  clang-3.5       0x00000000007b8f65
9  clang-3.5       0x0000000000fdcadb
llvm::SelectionDAGISel::SelectCodeCommon(llvm::SDNode*, unsigned char const*,
unsigned int) + 8507
10 clang-3.5       0x00000000007bdea7
11 clang-3.5       0x0000000000fd7f15
llvm::SelectionDAGISel::DoInstructionSelection() + 693
12 clang-3.5       0x0000000000fdf590
llvm::SelectionDAGISel::CodeGenAndEmitDAG() + 992
13 clang-3.5       0x0000000000fe354a
llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) + 1690
14 clang-3.5       0x0000000000fe5470
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 800
15 clang-3.5       0x00000000007c5350
16 clang-3.5       0x0000000000a318ef
llvm::FPPassManager::runOnFunction(llvm::Function&) + 655
17 clang-3.5       0x0000000000a31dcb
llvm::FPPassManager::runOnModule(llvm::Module&) + 43
18 clang-3.5       0x0000000000a3210d
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 797
19 clang-3.5       0x00000000012c3776
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions
const&, clang::TargetOptions const&, clang::LangOptions const&,
llvm::StringRef, llvm::Module*, clang::BackendAction, llvm::raw_ostream*) +
3126
20 clang-3.5       0x00000000012bd82f
21 clang-3.5       0x000000000172f3f3 clang::ParseAST(clang::Sema&, bool, bool)
+ 483
22 clang-3.5       0x00000000012be56b clang::CodeGenAction::ExecuteAction() +
59
23 clang-3.5       0x0000000000e1a1e6 clang::FrontendAction::Execute() + 118
24 clang-3.5       0x0000000000dfbdb0
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 304
25 clang-3.5       0x0000000000e9935e
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 2014
26 clang-3.5       0x000000000064a438 cc1_main(char const**, char const**, char
const*, void*) + 952
27 clang-3.5       0x0000000000648806 main + 7846
28 libc.so.6       0x00007f6e98229c4d __libc_start_main + 253
29 clang-3.5       0x00000000006455f9
Stack dump:

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20140623/88ea17aa/attachment.html>