[Touch-packages] [Bug 1341125] Re: Cannot enter floating point (double) numbers
Sorry, but I can still reproduce it. Precondition is that gdb is built with Python 3 support (and the one distributed with Ubuntu 14.10 is) and the current locale has a comma as decimal separator (I am using it_IT.UTF-8). At startup, gdb executes _initialize_python () (in file python/python.c): the following lines of code changhe the locale from C (which is the appropriate one, since gdb must be able to parse numbers that are valid in C language) to the one of the machine 1651 progname = concat (ldirname (python_libdir), SLASH_STRING, bin, 1652 SLASH_STRING, python, NULL); 1653#ifdef IS_PY3K 1654 oldloc = setlocale (LC_ALL, NULL); 1655 setlocale (LC_ALL, ); From this point on, gdb assumes that the decimal separator is a comma, and becomes unable to parse the number 1.0 ** Changed in: gdb (Ubuntu) Status: Fix Released = New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gdb in Ubuntu. https://bugs.launchpad.net/bugs/1341125 Title: Cannot enter floating point (double) numbers Status in GNU Debugger: Unknown Status in gdb package in Ubuntu: New Bug description: (gdb) show version GNU gdb (Ubuntu 7.7-0ubuntu3.1) 7.7 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://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. Type show copying and show warranty for details. This GDB was configured as x86_64-linux-gnu. Type show configuration for configuration details. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/. For help, type help. Type apropos word to search for commands related to word. (gdb) p 1.0 Invalid number 1.0. Yet, the latest git (tested 76bd66cfb5207137dac01534cf7d8af8f708743b from today) recognises 1.0 just fine, as a double To manage notifications about this bug go to: https://bugs.launchpad.net/gdb/+bug/1341125/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1341125] Re: Cannot enter floating point (double) numbers
It works correctly if started as LC_NUMERIC=C gdb to force the correct locale -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gdb in Ubuntu. https://bugs.launchpad.net/bugs/1341125 Title: Cannot enter floating point (double) numbers Status in GNU Debugger: Unknown Status in gdb package in Ubuntu: New Bug description: (gdb) show version GNU gdb (Ubuntu 7.7-0ubuntu3.1) 7.7 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://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. Type show copying and show warranty for details. This GDB was configured as x86_64-linux-gnu. Type show configuration for configuration details. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/. For help, type help. Type apropos word to search for commands related to word. (gdb) p 1.0 Invalid number 1.0. Yet, the latest git (tested 76bd66cfb5207137dac01534cf7d8af8f708743b from today) recognises 1.0 just fine, as a double To manage notifications about this bug go to: https://bugs.launchpad.net/gdb/+bug/1341125/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1341125] Re: Cannot enter floating point (double) numbers
After further investigation it seems that gdb assumes that floating- point numbers use . as decimal mark, as these lines from c-exp.y show else if (!got_dot *p == '.') got_dot = 1; but, later, the function parse_float() (in parse.c) feeds the string into sscanf num = sscanf (copy, % DOUBLEST_SCAN_FORMAT %n, d, n); and, apparently, sscanf is locale-sensitive, so, if the current locale has , as decimal mark, sscanf will leave everything past the . sign unscanned. gdb, then, notices that something is unscanned and says invalid number -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gdb in Ubuntu. https://bugs.launchpad.net/bugs/1341125 Title: Cannot enter floating point (double) numbers Status in “gdb” package in Ubuntu: New Bug description: (gdb) show version GNU gdb (Ubuntu 7.7-0ubuntu3.1) 7.7 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://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. Type show copying and show warranty for details. This GDB was configured as x86_64-linux-gnu. Type show configuration for configuration details. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/. For help, type help. Type apropos word to search for commands related to word. (gdb) p 1.0 Invalid number 1.0. Yet, the latest git (tested 76bd66cfb5207137dac01534cf7d8af8f708743b from today) recognises 1.0 just fine, as a double To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdb/+bug/1341125/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
[Touch-packages] [Bug 1341125] Re: Cannot enter floating point (double) numbers
Filed upstream bug https://sourceware.org/bugzilla/show_bug.cgi?id=17607 ** Bug watch added: Sourceware.org Bugzilla #17607 http://sourceware.org/bugzilla/show_bug.cgi?id=17607 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to gdb in Ubuntu. https://bugs.launchpad.net/bugs/1341125 Title: Cannot enter floating point (double) numbers Status in “gdb” package in Ubuntu: New Bug description: (gdb) show version GNU gdb (Ubuntu 7.7-0ubuntu3.1) 7.7 Copyright (C) 2014 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://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. Type show copying and show warranty for details. This GDB was configured as x86_64-linux-gnu. Type show configuration for configuration details. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/. Find the GDB manual and other documentation resources online at: http://www.gnu.org/software/gdb/documentation/. For help, type help. Type apropos word to search for commands related to word. (gdb) p 1.0 Invalid number 1.0. Yet, the latest git (tested 76bd66cfb5207137dac01534cf7d8af8f708743b from today) recognises 1.0 just fine, as a double To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdb/+bug/1341125/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
