[llvm-bugs] [Bug 31106] New: opt crashes while running "CallGraph Pass Manager": Assertion `CallSites.empty() && "Dangling pointers found in call sites map"' failed

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31106

            Bug ID: 31106
           Summary: opt crashes while running "CallGraph Pass Manager":
                    Assertion `CallSites.empty() && "Dangling pointers
                    found in call sites map"' failed
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: Loop Optimizer
          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 287325)
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 -inline -loop-extract -o small-opt.bc small.bc
opt: /tmp/llvm-builder/llvm-source-trunk/lib/Analysis/CallGraphSCCPass.cpp:352:
bool {anonymous}::CGPassManager::RefreshCallGraph(const llvm::CallGraphSCC&,
llvm::CallGraph&, bool): Assertion `CallSites.empty() && "Dangling pointers
found in call sites map"' failed.
#0 0x0000000001c3af05 (opt+0x1c3af05)
#1 0x0000000001c38fee (opt+0x1c38fee)
#2 0x0000000001c39150 (opt+0x1c39150)
#3 0x00007febf8f5e330 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x10330)
#4 0x00007febf7d4ac37 gsignal
/build/eglibc-oGUzwX/eglibc-2.19/signal/../nptl/sysdeps/unix/sysv/linux/raise.c:56:0
#5 0x00007febf7d4e028 abort
/build/eglibc-oGUzwX/eglibc-2.19/stdlib/abort.c:91:0
#6 0x00007febf7d43bf6 __assert_fail_base
/build/eglibc-oGUzwX/eglibc-2.19/assert/assert.c:92:0
#7 0x00007febf7d43ca2 (/lib/x86_64-linux-gnu/libc.so.6+0x2fca2)
#8 0x00000000012b0fd0 (opt+0x12b0fd0)
#9 0x00000000012b1a7b (opt+0x12b1a7b)
#10 0x00000000017d990a (opt+0x17d990a)
#11 0x000000000078a6b1 (opt+0x78a6b1)
#12 0x00007febf7d35f45 __libc_start_main
/build/eglibc-oGUzwX/eglibc-2.19/csu/libc-start.c:321:0
#13 0x00000000007e4336 (opt+0x7e4336)
Stack dump:
0.      Program arguments: opt -inline -loop-extract -o small-opt.bc small.bc
1.      Running pass 'CallGraph Pass Manager' on module 'small.bc'.
Aborted (core dumped)
$


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


int printf (const char *, ...);

int a;

void fn1 ()
{ 
  while (1)
    if (a < 1)
      break;
}

int main ()
{ 
  fn1 ();
  while (a)
    printf ("%d\n", a);
  return 0;
}

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