id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12712	BOOST_AUTO_TEST_SUITE: Generate unique names by using __COUNTER__	ki.stfu@…	Raffi Enficiaud	"There is a problem with non-unique names of <test_suite_name>_registrar in BOOST_AUTO_TEST_SUITE when joining multiple source files into one file using #include:

I have a project with huge number of tests in different files and it takes around 10 minutes to compile. The project structure is like:

.../test/data/foo.cpp:
```
#include ""stdafx.h""

BOOST_AUTO_TEST_SUITE(data)
BOOST_AUTO_TEST_SUITE(foo)

<my test cases>

BOOST_AUTO_TEST_SUITE_END()
BOOST_AUTO_TEST_SUITE_END()
```

.../test/data/bar.cpp:
```
#include ""stdafx.h""

BOOST_AUTO_TEST_SUITE(data)
BOOST_AUTO_TEST_SUITE(bar)

<my test cases>

BOOST_AUTO_TEST_SUITE_END()
BOOST_AUTO_TEST_SUITE_END()
```

To reduce the compilation time I included all sources into one file and after that I need to compile only that file (so it works much faster):
.../test/_all.cpp:
```
#include ""stdafx.h""

#include ""data/foo.cpp""
#include ""data/bar.cpp""
and so on...

```

But when I'm compiling this file I get a multiple definitions of ""data_registrar3"" (3 is a substituted __LINE__).

I think we can use __COUNTER__ if it's supported (it's not a standard feature but most of compilers support it) so that it will fix the problem.

Here is my patch:
```
$ diff unit_test_suite.hpp.original unit_test_suite.hpp -uar
--- unit_test_suite.hpp.original        2016-12-26 11:01:33.272912600 +0300
+++ unit_test_suite.hpp 2016-12-26 11:00:37.171138300 +0300
@@ -24,6 +24,11 @@

 #include <boost/test/detail/pp_variadic.hpp>

+#if defined(__COUNTER__)
+#define BOOST_TEST_UNIQUE_NUMBER __COUNTER__
+#else
+#define BOOST_TEST_UNIQUE_NUMBER __LINE__
+#endif

 //____________________________________________________________________________//

@@ -120,7 +125,7 @@
 // ************************************************************************** //

 #define BOOST_AUTO_TEST_SUITE_END()                                     \
-BOOST_AUTO_TU_REGISTRAR( BOOST_JOIN( end_suite, __LINE__ ) )( 1 );      \
+BOOST_AUTO_TU_REGISTRAR( BOOST_JOIN( end_suite, BOOST_TEST_UNIQUE_NUMBER ) )( 1 );      \
 }                                                                       \
 /**/

@@ -298,7 +303,7 @@

 #define BOOST_TEST_DECORATOR( D )                                       \
 static boost::unit_test::decorator::collector const&                    \
-BOOST_JOIN(decorator_collector,__LINE__) = D;                           \
+BOOST_JOIN(decorator_collector,BOOST_TEST_UNIQUE_NUMBER) = D;                           \
 /**/

 // ************************************************************************** //
@@ -322,7 +327,7 @@

 #define BOOST_AUTO_TU_REGISTRAR( test_name )                    \
 static boost::unit_test::ut_detail::auto_test_unit_registrar    \
-BOOST_JOIN( BOOST_JOIN( test_name, _registrar ), __LINE__ )     \
+BOOST_JOIN( BOOST_JOIN( test_name, _registrar ), BOOST_TEST_UNIQUE_NUMBER )     \
 /**/
 #define BOOST_AUTO_TC_INVOKER( test_name )      BOOST_JOIN( test_name, _invoker )
 #define BOOST_AUTO_TC_UNIQUE_ID( test_name )    BOOST_JOIN( test_name, _id )

```"	Patches	closed	Boost 1.64.0	test	Boost Development Trunk	Problem	fixed		raffi.enficiaud@… ki.stfu@…