[llvm-bugs] [Bug 48323] New: Attempting to redefine a variable fails silently

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=48323

            Bug ID: 48323
           Summary: Attempting to redefine a variable fails silently
           Product: lldb
           Version: unspecified
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: All Bugs
          Assignee: lldb-dev at lists.llvm.org
          Reporter: rgovostes at gmail.com
                CC: jdevlieghere at apple.com, llvm-bugs at lists.llvm.org

This behavior is surprising:

    (lldb) expr int $x = 3
    (lldb) expr int $x = 4
    (lldb) expr $x
    (int) $x = 3

This should either:

    (i) emit an error that $x cannot be redefined, or
   (ii) redefine $x such that the last line outputs `$x = 4`

I would prefer (ii).

lldb-1200.0.41 running on macOS Big Sur (20B29)

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