[llvm-bugs] [Bug 43728] New: hang on invalid code at x86_64-linux-gnu

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=43728

            Bug ID: 43728
           Summary: hang on invalid code at x86_64-linux-gnu
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: Frontend
          Assignee: unassignedclangbugs at nondot.org
          Reporter: tangyixuan at mail.dlut.edu.cn
                CC: llvm-bugs at lists.llvm.org, neeilans at live.com,
                    richard-llvm at metafoo.co.uk

clang-10 hangs for the following:

$ cat s.c
  static int *f1(int p_7, int *p_8)
  {
    int l_406[3];
    int b = 1;
    for (int c = 0; c <= 11; c++)
    {
      b = *p_46;
    }
  }

$: timeout -s 9 30 clang -c s.c
Killed
$: clang-trunk -v
clang version 10.0.0 (https://github.com/llvm/llvm-project.git
49c4e58b75ecec8dce75dd13c61aaeb30e14b531)
Target: x86_64-unknown-linux-gnu
Thread model: posix

While clang-8 is okay:
s.c:7:10: error: use of undeclared identifier 'p_46'; did you mean 'l_406'?
    b = *p_46;
         ^~~~
         l_406
s.c:3:7: note: 'l_406' declared here
  int l_406[3];
      ^
1 error generated.

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