[llvm-bugs] [Bug 45754] New: llvm-symbolizer in interactive mode produces crash report message on Ctrl+C

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=45754

            Bug ID: 45754
           Summary: llvm-symbolizer in interactive mode produces crash
                    report message on Ctrl+C
           Product: tools
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: llvm-symbolizer
          Assignee: unassignedbugs at nondot.org
          Reporter: jh7370.2008 at my.bristol.ac.uk
                CC: llvm-bugs at lists.llvm.org

This appears to be a regression sometime between LLVM 9 and the current head of
master. When using llvm-symbolizer in interactive mode (i.e. without specifying
any addresses on the command-line and without feeding a file via stdin), it
produces the crash report message (but no backtrace) when the user presses
Ctrl+C to terminate the process.

Further investigation suggests that this only happens when the user provides
the input file on the command-line, and not until they have entered at least
one address. Additionally, on occasion I didn't see the message in my
experiments with this.

Example:

PS C:\Work\TempWork> C:\llvm\build\Debug\bin\llvm-symbolizer.exe -e test.elf
0x1234 <-- entered via stdin
??
??:0:0

<enter Ctrl+C>
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash
backtrace.
PS C:\Work\TempWork>

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