[LLVMbugs] [Bug 12472] New: Assertion `isa<X>(Val) && "cast_or_null<Ty>() argument of incompatible type!"' failed.

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=12472

             Bug #: 12472
           Summary: Assertion `isa<X>(Val) && "cast_or_null<Ty>() argument
                    of incompatible type!"' failed.
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: regehr at cs.utah.edu
                CC: chenyang at cs.utah.edu, llvmbugs at cs.uiuc.edu
    Classification: Unclassified


[regehr at dyson r6]$ clang -O -c small.c
clang:
/uusoc/exports/scratch/regehr/z/compiler-build/llvm-r154095/include/llvm/Support/Casting.h:205:
typename llvm::cast_retty<X, Y*>::ret_type llvm::cast_or_null(Y*) [with X =
llvm::BasicBlock, Y = llvm::Value]: Assertion `isa<X>(Val) &&
"cast_or_null<Ty>() argument of incompatible type!"' failed.
0  clang           0x0000000001e405cf
1  clang           0x0000000001e42552
2  libpthread.so.0 0x00007ffff7bcf8f0
3  libc.so.6       0x00007ffff6ebea75 gsignal + 53
4  libc.so.6       0x00007ffff6ec25c0 abort + 384
5  libc.so.6       0x00007ffff6eb7941 __assert_fail + 241
6  clang           0x0000000001b4a648 llvm::InlineFunction(llvm::CallSite,
llvm::InlineFunctionInfo&, bool) + 10808
7  clang           0x00000000012a825d
8  clang           0x00000000012a9b7f
llvm::Inliner::runOnSCC(llvm::CallGraphSCC&) + 3247
9  clang           0x0000000001b8fa0a
10 clang           0x0000000001ddc171
llvm::MPPassManager::runOnModule(llvm::Module&) + 497
11 clang           0x0000000001ddc2eb llvm::PassManagerImpl::run(llvm::Module&)
+ 171
12 clang           0x00000000007b69f1
clang::EmitBackendOutput(clang::DiagnosticsEngine&, clang::CodeGenOptions
const&, clang::TargetOptions const&, clang::LangOptions const&, llvm::Module*,
clang::BackendAction, llvm::raw_ostream*) + 1457
13 clang           0x00000000007b4009
14 clang           0x0000000000913f71 clang::ParseAST(clang::Sema&, bool) + 465
15 clang           0x00000000007b2a14 clang::CodeGenAction::ExecuteAction() +
68
16 clang           0x000000000065ce51
clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) + 321
17 clang           0x00000000006460b4
clang::ExecuteCompilerInvocation(clang::CompilerInstance*) + 1348
18 clang           0x000000000063bf80 cc1_main(char const**, char const**, char
const*, void*) + 944
19 clang           0x0000000000644eb9 main + 7241
20 libc.so.6       0x00007ffff6ea9c4d __libc_start_main + 253
21 clang           0x0000000000639a09
Stack dump:
0.    Program arguments:
/uusoc/exports/scratch/regehr/z/compiler-install/llvm-gcc-r154095-install/bin/clang
-cc1 -triple x86_64-unknown-linux-gnu -emit-obj -disable-free -main-file-name
small.c -mrelocation-model static -masm-verbose -mconstructor-aliases
-munwind-tables -target-cpu x86-64 -momit-leaf-frame-pointer -coverage-file
small.o -resource-dir
/uusoc/exports/scratch/regehr/z/compiler-install/llvm-gcc-r154095-install/bin/../lib/clang/3.1
-fmodule-cache-path /var/tmp/clang-module-cache -internal-isystem
/usr/local/include -internal-isystem
/uusoc/exports/scratch/regehr/z/compiler-install/llvm-gcc-r154095-install/bin/../lib/clang/3.1/include
-internal-externc-isystem /include -internal-externc-isystem /usr/include -O2
-fdebug-compilation-dir /home/regehr/z/reduce/r6 -ferror-limit 19
-fmessage-length 96 -mstackrealign -fgnu-runtime -fobjc-runtime-has-arc
-fobjc-runtime-has-weak -fobjc-fragile-abi -fdiagnostics-show-option
-fcolor-diagnostics -o small.o -x c small.c 
1.    <eof> parser at end of file
2.    Per-module optimization passes
3.    Running pass 'CallGraph Pass Manager' on module 'small.c'.
clang: error: unable to execute command: Aborted
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang: note: diagnostic msg: Please submit a bug report to
http://llvm.org/bugs/ and include command line arguments and all diagnostic
information.
clang: note: diagnostic msg: Preprocessed source(s) and associated run
script(s) are located at:
clang: note: diagnostic msg: /tmp/small-J3iOR4.i
clang: note: diagnostic msg: /tmp/small-J3iOR4.sh


[regehr at dyson r6]$ cat small.c
int a;
short fn1 ();
void
fn2 () {
  fn1 (1);
}
short
fn1 (p1) {
  a = 0;
  for (; a != 1; a = 1)
    if (p1)
      for (;;) {
      }
  return 0;
}


[regehr at dyson r6]$ clang -v
clang version 3.1 (trunk 154095)
Target: x86_64-unknown-linux-gnu
Thread model: posix

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