global c++ parser misses C++11 type alias (using)

[Evghenii Gaburov]

OS: Linux Ubuntu 14.04LTS & Mac OS X 10.10.2

GLOBAL: v6.5, built from source via configure && make && make install

COMMAND : gtags -v

EXPECT: detect C++11 type alias (using A = B;)

RESULT: C++11 type alias is not tagged

Here is the reproducer:

—————————————

$ cat > cvt.cpp

using my_type1 = double;

typedef float my_type2;

my_type2 cvt(my_type1 x)

{

   return static_cast<my_type2>(x);

}

^C

$ gtags --version

gtags (GNU GLOBAL) 6.5

Copyright (c) 2015 Tama Communications Corporation

License GPLv3+: GNU GPL version 3 or later <http://www.gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law.

$ gtags -v

[Wed Jul 08 13:11:29 CEST 2015] Gtags started.

[Wed Jul 08 13:11:29 CEST 2015] Creating 'GTAGS' and 'GRTAGS'.

 [1] extracting tags of cvt.cpp

[Wed Jul 08 13:11:29 CEST 2015] Done.

$ global -x my_type1

$ global -x my_type2

my_type2            2 cvt.cpp          typedef float my_type2;

$ 

Attached is a simple patch [by no means complete] that seems to fix the problem:

—————————————————

$ patch -p1 < global-6.5-using.patch 

patching file libparser/Cpp.c

$ make && make install

$ rm -rf G*

$ gtags -v

[Wed Jul 08 13:14:09 CEST 2015] Gtags started.

[Wed Jul 08 13:14:09 CEST 2015] Creating 'GTAGS' and 'GRTAGS'.

 [1] extracting tags of cvt.cpp

[Wed Jul 08 13:14:09 CEST 2015] Done.

$ global -x my_type1

my_type1            1 cvt.cpp          using my_type1 = double;

$ global -x my_type2

my_type2            2 cvt.cpp          typedef float my_type2;

Cheers,

  Evghenii

global-6.5-using.patch
Description: Binary data