[LLVMbugs] [Bug 6531] New: crash with __attribute__ __aligned__ in union (libstdc++ tr1/type_traits)

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=6531

           Summary: crash with __attribute__ __aligned__ in union
                    (libstdc++ tr1/type_traits)
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: sorokin at rain.ifmo.ru
                CC: llvmbugs at cs.uiuc.edu, dgregor at apple.com


clang crashes on this code:

  template<unsigned long _Len, unsigned long _Align>
    struct aligned_storage
    {
      union type
      {
 unsigned char __data[_Len];
 struct __attribute__((__aligned__((_Align)))) { } __align;
      };
    };

clang: /home/ivan/d/llvm/tools/clang/lib/AST/Expr.cpp:1600: ICEDiag
CheckICE(const clang::Expr*, clang::ASTContext&): Assertion
`!E->isValueDependent() && "Should not see value dependent exprs!"' failed.
0  clang           0x000000000141ceba
1  clang           0x000000000141cd33
2  libpthread.so.0 0x00007f5aef456190
3  libc.so.6       0x00007f5aee75c4b5 gsignal + 53
4  libc.so.6       0x00007f5aee75ff50 abort + 384
5  libc.so.6       0x00007f5aee755481 __assert_fail + 241
6  clang           0x00000000009b8e1d
7  clang           0x00000000009b9d59
8  clang           0x00000000006f0609
9  clang           0x00000000006f29d1
10 clang           0x00000000006f2f88
11 clang           0x00000000006db8e4
12 clang           0x0000000000a47636
13 clang           0x0000000000a3b95b
14 clang           0x0000000000a4889f
15 clang           0x0000000000a498fa
16 clang           0x0000000000a477f7
17 clang           0x0000000000a3b95b
18 clang           0x0000000000a4889f
19 clang           0x0000000000a498fa
20 clang           0x0000000000a477f7
21 clang           0x0000000000a3b95b
22 clang           0x0000000000a60407
23 clang           0x0000000000a60237
24 clang           0x0000000000a5fd63
25 clang           0x0000000000a3828c
26 clang           0x0000000000a32603
27 clang           0x0000000000a31fcd
28 clang           0x00000000006895bb
29 clang           0x00000000004351aa
30 clang           0x0000000000434e38
31 clang           0x000000000041f556
32 clang           0x0000000000408ec7
33 clang           0x000000000040da36 main + 259
34 libc.so.6       0x00007f5aee747abd __libc_start_main + 253
35 clang           0x00000000004079e9
Stack dump:
0.    Program arguments: /home/ivan/d/llvm-build/Debug/bin/clang -cc1 -triple
x86_64-unknown-linux-gnu -S -disable-free -main-file-name 13.cpp
-mrelocation-model static -mdisable-fp-elim -mconstructor-aliases
-munwind-tables -target-cpu x86-64 -resource-dir
/home/ivan/d/llvm-build/Debug/lib/clang/1.1 -fmessage-length 157 -fexceptions
-fgnu-runtime -fdiagnostics-show-option -fcolor-diagnostics -o /tmp/cc-XT3UNc.s
-x c++ 13.cpp 
1.    13.cpp:7:48: current parser token '{'
2.    13.cpp:2:5: parsing struct/union/class body 'aligned_storage'
3.    13.cpp:4:7: parsing struct/union/class body 'aligned_storage::type'
clang: error: compiler command failed due to signal 6 (use -v to see
invocation)

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