[patch #7387] AC_CXX_COMPILE_STDCXX_0X does not work with G++ 4.5

[anonymous]

URL:
  <http://savannah.gnu.org/patch/?7387>

                 Summary: AC_CXX_COMPILE_STDCXX_0X does not work with G++ 4.5
                 Project: GNU Autoconf Archive
            Submitted by: None
            Submitted on: sáb 13 nov 2010 19:29:50 UTC
                Priority: 5 - Normal
                  Status: None
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

    _______________________________________________________

Details:

(didnt found a bug tracker)

the macro AC_CXX_COMPILE_STDCXX_0X fails with GCC 4.5/autoconf 2.65 or later
or later, but works with  GCC 4.4.x and autoconf 2.63

relevant config.log bits

configure:5004: checking if g++ supports C++0x features with -std=c++0x
configure:5043: g++ -c -Wall -march=native -O2 -g -m64 -fmessage-length=0
-D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables
-fasynchronous-unwind-tables -std=c++0x  conftest.cpp >&5
conftest.cpp:40:23: error: invalid initialization of reference of type
'check_type&&' from expression of type 'check_type'
configure:5043: $? = 1
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "pbzip2"
| #define PACKAGE_TARNAME "pbzip2"
| #define PACKAGE_VERSION "1.1.1"
| #define PACKAGE_STRING "pbzip2 1.1.1"
| #define PACKAGE_BUGREPORT "address@hidden"
| #define PACKAGE_URL ""
| #define PACKAGE "pbzip2"
| #define VERSION "1.1.1"
| #define STDC_HEADERS 1
| #define HAVE_SYS_TYPES_H 1
| #define HAVE_SYS_STAT_H 1
| #define HAVE_STDLIB_H 1
| #define HAVE_STRING_H 1
| #define HAVE_MEMORY_H 1
| #define HAVE_STRINGS_H 1
| #define HAVE_INTTYPES_H 1
| #define HAVE_STDINT_H 1
| #define HAVE_UNISTD_H 1
| #define __EXTENSIONS__ 1
| #define _ALL_SOURCE 1
| #define _GNU_SOURCE 1
| #define _POSIX_PTHREAD_SEMANTICS 1
| #define _TANDEM_SOURCE 1
| /* end confdefs.h.  */
| 
|   template <typename T>
|     struct check
|     {
|       static_assert(sizeof(int) <= sizeof(T), "not big enough");
|     };
| 
|     typedef check<check<bool>> right_angle_brackets;
| 
|     int a;
|     decltype(a) b;
| 
|     typedef check<int> check_type;
|     check_type c;
|     check_type&& cr = c;
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:5058: result: no
configure:5061: checking if g++ supports C++0x features with -std=gnu++0x
configure:5100: g++ -c -Wall -march=native -O2 -g -m64 -fmessage-length=0
-D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables
-fasynchronous-unwind-tables -std=gnu++0x  conftest.cpp >&5
conftest.cpp:40:23: error: invalid initialization of reference of type
'check_type&&' from expression of type 'check_type'
configure:5100: $? = 1
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "pbzip2"
| #define PACKAGE_TARNAME "pbzip2"
| #define PACKAGE_VERSION "1.1.1"
| #define PACKAGE_STRING "pbzip2 1.1.1"
| #define PACKAGE_BUGREPORT "address@hidden"
| #define PACKAGE_URL ""
| #define PACKAGE "pbzip2"
| #define VERSION "1.1.1"
| #define STDC_HEADERS 1
| #define HAVE_SYS_TYPES_H 1
| #define HAVE_SYS_STAT_H 1
| #define HAVE_STDLIB_H 1
| #define HAVE_STRING_H 1
| #define HAVE_MEMORY_H 1
| #define HAVE_STRINGS_H 1
| #define HAVE_INTTYPES_H 1
| #define HAVE_STDINT_H 1
| #define HAVE_UNISTD_H 1
| #define __EXTENSIONS__ 1
| #define _ALL_SOURCE 1
| #define _GNU_SOURCE 1
| #define _POSIX_PTHREAD_SEMANTICS 1
| #define _TANDEM_SOURCE 1
| /* end confdefs.h.  */
| 
|   template <typename T>
|     struct check
|     {
|       static_assert(sizeof(int) <= sizeof(T), "not big enough");
|     };
| 
|     typedef check<check<bool>> right_angle_brackets;
| 
|     int a;
|     decltype(a) b;
| 
|     typedef check<int> check_type;
|     check_type c;
|     check_type&& cr = c;
| int
| main ()
| {
| 
|   ;
|   return 0;
| }
configure:5115: result: no




    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/patch/?7387>

_______________________________________________
  Mensaje enviado vía/por Savannah
  http://savannah.gnu.org/