[llvm-bugs] [Bug 42787] New: inline crashes: Assertion `!CheckingMode && "CallGraphSCCPass did not update the CallGraph correctly!"' failed.

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42787

            Bug ID: 42787
           Summary: inline crashes: Assertion `!CheckingMode &&
                    "CallGraphSCCPass did not update the CallGraph
                    correctly!"' failed.
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Interprocedural Optimizations
          Assignee: unassignedbugs at nondot.org
          Reporter: cszide at 163.com
                CC: llvm-bugs at lists.llvm.org

Created attachment 22300
  --> https://bugs.llvm.org/attachment.cgi?id=22300&action=edit
.bc file of the source code

$clang -v
clang version 10.0.0 (trunk 367076)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build4/bin
Found candidate GCC installation: /usr/lib/gcc/i686-linux-gnu/8
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/5.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/6.5.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0
Found candidate GCC installation: /usr/lib/gcc/x86_64-linux-gnu/8
Selected GCC installation: /usr/lib/gcc/x86_64-linux-gnu/7.4.0
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Candidate multilib: x32;@mx32
Selected multilib: .;@m64

$clang -O3 -c -emit-llvm -femit-all-decls -mllvm -disable-llvm-optzns small.c

$opt -functionattrs -rpo-functionattrs -die -inline  small.bc -o small-opt.bc
opt:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/lib/Analysis/CallGraphSCCPass.cpp:248:
bool {anonymous}::CGPassManager::RefreshCallGraph(const llvm::CallGraphSCC&,
llvm::CallGraph&, bool): Assertion `!CheckingMode && "CallGraphSCCPass did not
update the CallGraph correctly!"' failed.
Stack dump:
0.      Program arguments:
/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build4/bin/opt -functionattrs
-rpo-functionattrs -die -inline small.bc -o small-opt.bc 
1.      Running pass 'CallGraph Pass Manager' on module 'small.bc'.
 #0 0x00005579bc9c268a llvm::sys::PrintStackTrace(llvm::raw_ostream&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build4/bin/opt+0x26bb68a)
 #1 0x00005579bc9c0334 llvm::sys::RunSignalHandlers()
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build4/bin/opt+0x26b9334)
 #2 0x00005579bc9c0472 SignalHandler(int)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build4/bin/opt+0x26b9472)
 #3 0x00007fb6d309a890 __restore_rt
(/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)
 #4 0x00007fb6d1d4ce97 raise
/build/glibc-OTsEL5/glibc-2.27/signal/../sysdeps/unix/sysv/linux/raise.c:51:0
 #5 0x00007fb6d1d4e801 abort /build/glibc-OTsEL5/glibc-2.27/stdlib/abort.c:81:0
 #6 0x00007fb6d1d3e39a __assert_fail_base
/build/glibc-OTsEL5/glibc-2.27/assert/assert.c:89:0
 #7 0x00007fb6d1d3e412 (/lib/x86_64-linux-gnu/libc.so.6+0x30412)
 #8 0x00005579bbc2ff88 (anonymous
namespace)::CGPassManager::runOnModule(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build4/bin/opt+0x1928f88)
 #9 0x00005579bc34e2d1 llvm::legacy::PassManagerImpl::run(llvm::Module&)
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build4/bin/opt+0x20472d1)
#10 0x00005579bab69425 main
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build4/bin/opt+0x862425)
#11 0x00007fb6d1d2fb97 __libc_start_main
/build/glibc-OTsEL5/glibc-2.27/csu/../csu/libc-start.c:344:0
#12 0x00005579babef93a _start
(/home/jack-zhou/Documents/llvm/llvm_truck/llvm2/build4/bin/opt+0x8e893a)
Aborted (core dumped)

----------------------------------------------
int a;
void b() { a = 0; }
void c() {}
void main() {
  b();
  c();
}

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