Masayuki Yamamoto added the comment: I tried another two case changing variable declaration. First case of just removing "extern", Compiler similarly warns, and test passed. Second case of removing "_PyOS_ReadlineTState" declaration, Compiler has not warned, and test passed.
First: $ hg diff diff -r a50707a73d84 Modules/readline.c --- a/Modules/readline.c Wed Nov 05 15:11:34 2014 +0100 +++ b/Modules/readline.c Mon Apr 27 03:09:06 2015 +0900 @@ -1062,7 +1062,7 @@ rl_callback_handler_remove(); } -extern PyThreadState* _PyOS_ReadlineTState; +PyThreadState* _PyOS_ReadlineTState; static char * readline_until_enter_or_signal(const char *prompt, int *signal) $ ./configure --prefix=/opt/py34 && make ... building 'readline' extension ... /cygdrive/d/cyghome/masayuki/src/CPython-3.4/Modules/readline.c:1065:16: warning: '_PyOS_ReadlineTState' redeclared without dllimport attribute: previous dllimport ignored [-Wattributes] PyThreadState* _PyOS_ReadlineTState; ^ ... $ make install $ /opt/py34/bin/python3.4m.exe -E -Wd -mtest -v test_readline == CPython 3.4.3+ (3.4:a50707a73d84+, Apr 27 2015, 02:59:04) [GCC 4.9.2] == CYGWIN_NT-6.0-1.7.35-0.287-5-3-i686-32bit-WindowsPE little-endian == hash algorithm: siphash24 32bit == /tmp/test_python_3872 Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=1, verbose=0, bytes_warning=0, quiet=0, hash_randomization=1, isolated=0) [1/1] test_readline testHistoryUpdates (test.test_readline.TestHistoryManipulation) ... ok test_init (test.test_readline.TestReadline) ... ok ---------------------------------------------------------------------- Ran 2 tests in 0.203s OK 1 test OK. Second: $ hg diff diff -r a50707a73d84 Modules/readline.c --- a/Modules/readline.c Wed Nov 05 15:11:34 2014 +0100 +++ b/Modules/readline.c Mon Apr 27 04:13:45 2015 +0900 @@ -1062,7 +1062,6 @@ rl_callback_handler_remove(); } -extern PyThreadState* _PyOS_ReadlineTState; static char * readline_until_enter_or_signal(const char *prompt, int *signal) $ ./configure --prefix=/opt/py34 && make ... building 'readline' extension has not warned. $ make install $ /opt/py34/bin/python3.4m.exe -E -Wd -mtest -v test_readline == CPython 3.4.3+ (3.4:a50707a73d84+, Apr 27 2015, 04:19:36) [GCC 4.9.2] == CYGWIN_NT-6.0-1.7.35-0.287-5-3-i686-32bit-WindowsPE little-endian == hash algorithm: siphash24 32bit == /tmp/test_python_5936 Testing with flags: sys.flags(debug=0, inspect=0, interactive=0, optimize=0, dont_write_bytecode=0, no_user_site=0, no_site=0, ignore_environment=1, verbose=0, bytes_warning=0, quiet=0, hash_randomization=1, isolated=0) [1/1] test_readline testHistoryUpdates (test.test_readline.TestHistoryManipulation) ... ok test_init (test.test_readline.TestReadline) ... ok ---------------------------------------------------------------------- Ran 2 tests in 0.160s OK 1 test OK. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue24058> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com