[llvm-bugs] [Bug 42437] New: C++ compiler crashes on the code that uses stdatomic.h

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42437

            Bug ID: 42437
           Summary: C++ compiler crashes on the code that uses stdatomic.h
           Product: new-bugs
           Version: unspecified
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: dimak at communigate.ru
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

Created attachment 22162
  --> https://bugs.llvm.org/attachment.cgi?id=22162&action=edit
Piece if code to reporoduce the crash

clang compiler crashes on attempt to compile the attached piece of code, namely
the attempt to get result of increment/decrement operation "a += step;" where
"a" is atomic. First encountered with Apple LLVM clang version 9, reproduced
with version 10 and older versions of the compiler on FreeBSD 11.

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