import gdb
import itertools
import re
-import sys
+import sys, os, errno
### Python 2 + Python 3 compatibility code
name = names[int(self.val)]
return 'std::{}::{}'.format(self.typename, name)
+class StdErrorCatPrinter:
+ "Print an object derived from std::error_category"
+
+ def __init__ (self, typename, val):
+ self.val = val
+ self.typename = typename
+
+ def to_string (self):
+ gdb.set_convenience_variable('__cat', self.val)
+ name = gdb.parse_and_eval('$__cat->name()').string()
+ return 'error category = "{}"'.format(name)
+
+class StdErrorCodePrinter:
+ "Print a std::error_code or std::error_condition"
+
+ _errno_categories = None # List of categories that use errno values
+
+ def __init__ (self, typename, val):
+ self.val = val
+ self.typename = typename
+ # Do this only once ...
+ if StdErrorCodePrinter._errno_categories is None:
+ StdErrorCodePrinter._errno_categories = ['generic']
+ try:
+ import posix
+ StdErrorCodePrinter._errno_categories.append('system')
+ except ImportError:
+ pass
+
+ @staticmethod
+ def _category_name(cat):
+ "Call the virtual function that overrides std::error_category::name()"
+ gdb.set_convenience_variable('__cat', cat)
+ return gdb.parse_and_eval('$__cat->name()').string()
+
+ def to_string (self):
+ value = self.val['_M_value']
+ category = self._category_name(self.val['_M_cat'])
+ strval = str(value)
+ if value == 0:
+ default_cats = {'error_code':'system', 'error_condition':'generic'}
+ unqualified = self.typename.split('::')[-1]
+ if category == default_cats[unqualified]:
+ return self.typename + ' = { }' # default-constructed value
+ if value > 0 and category in StdErrorCodePrinter._errno_categories:
+ try:
+ strval = errno.errorcode[int(value)]
+ except:
+ pass
+ return '%s = {"%s": %s}' % (self.typename, category, strval)
+
# A "regular expression" printer which conforms to the
# "SubPrettyPrinter" protocol from gdb.printing.
class RxPrinter(object):
libstdcxx_printer.add_version('std::__cxx11::', 'basic_string', StdStringPrinter)
libstdcxx_printer.add_container('std::', 'bitset', StdBitsetPrinter)
libstdcxx_printer.add_container('std::', 'deque', StdDequePrinter)
+ libstdcxx_printer.add_version('std::', 'error_code', StdErrorCodePrinter)
+ libstdcxx_printer.add_version('std::', 'error_condition', StdErrorCodePrinter)
libstdcxx_printer.add_container('std::', 'list', StdListPrinter)
libstdcxx_printer.add_container('std::__cxx11::', 'list', StdListPrinter)
libstdcxx_printer.add_container('std::', 'map', StdMapPrinter)
// { dg-final { note-test tpl {std::tuple containing = {[1] = 6, [2] = 7}} } }
ExTuple &rtpl = tpl;
// { dg-final { note-test rtpl {std::tuple containing = {[1] = 6, [2] = 7}} } }
+
+ std::error_code e0;
+ // { dg-final { note-test e0 {std::error_code = { }} } }
+ std::error_condition ec0;
+ // { dg-final { note-test ec0 {std::error_condition = { }} } }
+ std::error_code einval = std::make_error_code(std::errc::invalid_argument);
+ // { dg-final { note-test einval {std::error_code = {"generic": EINVAL}} } }
+ std::error_condition ecinval = std::make_error_condition(std::errc::invalid_argument);
+ // { dg-final { note-test ecinval {std::error_condition = {"generic": EINVAL}} } }
+
+ struct custom_cat : std::error_category {
+ const char* name() const noexcept { return "miaow"; }
+ std::string message(int) const { return ""; }
+ } cat;
+ std::error_code emiaow(42, cat);
+ // { dg-final { note-test emiaow {std::error_code = {"miaow": 42}} } }
+ std::error_condition ecmiaow(42, cat);
+ // { dg-final { note-test ecmiaow {std::error_condition = {"miaow": 42}} } }
+
placeholder(""); // Mark SPOT
use(efl);
use(fl);