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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/28093] set language unknown -> print "foo" -> GDB crash
Date: Thu, 15 Jul 2021 15:52:57 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D28093

--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Not technically a regression, I suppose.
Fedora 32 /bin/gdb:

(gdb) print "hi"
../../gdb/parse.c:725: internal-error: int prefixify_expression(expression*,
int): Assertion `expr->nelts > 0' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)=20


The default language "parser" just does:

  int parser (struct parser_state *ps) const override
  {
    /* No parsing is done, just claim success.  */
    return 1;
  }

... which is pretty lame / wrong.

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