[Bug symtab/15962] break / rbreak fails to match C linkage C++ functions with user-defined types

["jifl-bugzilla at jifvik dot org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=15962

--- Comment #1 from Jonathan Larmour <jifl-bugzilla at jifvik dot org> ---
Created attachment 8099
  --> https://sourceware.org/bugzilla/attachment.cgi?id=8099&action=edit
Candidate patch to try with and without canonicalization

Hi,

I've come back to this issue as it is still present in 7.8.2. The suggested fix
I proposed was not right - cp_canonicalize_string_no_typedefs() will eventually
call lookup_symbol() (via replace_typedefs() or inspect_type()) which can cause
infinite recursion.

Therefore I am attaching a possible more straightforward fix which is to adjust
find_linespec_symbols() so that it first tries to find a function symbol for
the passed-in name, and only then repeats the search with a canonicalized
version of the name.

It certainly fixes the reported issue. So can someone have a look at it?
Thanks.

I do have an FSF assignment.

Jifl

2014-02-03  Jonathan Larmour  <jifl@eCosCentric.com>

    PR symtab/15962
    * linespec.c (find_linespec_symbols): Attempt to find function symbol
    both without and with C++ canonicalization.

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