[llvm-bugs] [Bug 31188] New: opt crashes with "opt -globals-aa -lcssa -inline": UNREACHABLE executed at /tmp/llvm-builder/llvm-source-trunk/lib/IR/Value.cpp:822!

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31188

            Bug ID: 31188
           Summary: opt crashes with "opt -globals-aa -lcssa -inline":
                    UNREACHABLE executed at
                    /tmp/llvm-builder/llvm-source-trunk/lib/IR/Value.cpp:8
                    22!
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Scalar Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: su at cs.ucdavis.edu
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

$ clang -v
clang version 4.0.0 (trunk 287975)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/local/clang-trunk/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/4.9.4
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.6.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.7.3
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.8.5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9.4
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.3.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.2.0
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/4.9
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64
$ 
$ clang -c -emit-llvm -o small.bc small.c
$ opt -globals-aa -lcssa -inline -o small-opt.bc small.bc
While deleting: void ()* %foo
An asserting value handle still pointed to this value!
UNREACHABLE executed at
/tmp/llvm-builder/llvm-source-trunk/lib/IR/Value.cpp:822!
#0 0x0000000001c45a45 (opt+0x1c45a45)
#1 0x0000000001c43b2e (opt+0x1c43b2e)
#2 0x0000000001c43c90 (opt+0x1c43c90)
#3 0x00007f96639a9330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#4 0x00007f9662795c37 gsignal
/build/eglibc-oGUzwX/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007f9662799028 abort
/build/eglibc-oGUzwX/eglibc-2.19/stdlib/abort.c:91:0
#6 0x0000000001bef25a (opt+0x1bef25a)
#7 0x0000000001819d08 (opt+0x1819d08)
#8 0x000000000181ab4d (opt+0x181ab4d)
#9 0x00000000017a4382 (opt+0x17a4382)
#10 0x00000000017a43d9 (opt+0x17a43d9)
#11 0x000000000188df31 (opt+0x188df31)
#12 0x00000000012b8052 (opt+0x12b8052)
#13 0x00000000017e0bda (opt+0x17e0bda)
#14 0x000000000078c9a1 (opt+0x78c9a1)
#15 0x00007f9662780f45 __libc_start_main
/build/eglibc-oGUzwX/eglibc-2.19/csu/libc-start.c:321:0
#16 0x00000000007e6f4b (opt+0x7e6f4b)
Stack dump:
0.      Program arguments: opt -globals-aa -lcssa -inline -o small-opt.bc
small.bc 
1.      Running pass 'CallGraph Pass Manager' on module 'small.bc'.
Aborted (core dumped)
$ 


------------------------------


static void foo () {}

int main ()
{
  foo ();
  return 0; 
}

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