Re: [PATCH 2/2] gdb/testsuite: new test for recent dwarf reader issue

[Tom Tromey <tom@tromey.com>]

>>>>> "Andrew" == Andrew Burgess via Gdb-patches <gdb-patches@sourceware.org> writes:

Thank you for doing this.

Andrew>   - However, GDB checks each partial symbol using multiple languages,
Andrew>     not just the current language (C in this case), so, when GDB
Andrew>     checks using the C++ language, the symbol name is first demangled,
Andrew>     the code that does this can be found
Andrew>     lookup_name_info::language_lookup_name.  As the demangled form of
Andrew>     'signed int' is just 'int', GDB then looks for any symbols with
Andrew>     the name 'int', most partial symtabs will contain such a symbol,
Andrew>     so GDB ends up expanding pretty much every symtab.

It's a pedantic point but what happens here is name canonicalization,
not demangling.  Demangling is just used to refer to the translation
from a name like "_Zmumble" to "something::else" -- that is, the input
is a linkage name and the output is a C++ name.  Canonicalization takes
a C++ name as input and returns the standard form, basically dealing
with the fact that C++ (and as we discovered, C) has multiple possible
spellings for some symbols.

Tom