__check_grouping(const string& __grouping, unsigned* __g, unsigned* __g_end,
ios_base::iostate& __err)
{
- if (__grouping.size() != 0)
+// if the grouping pattern is empty _or_ there are no grouping bits, then do nothing
+// we always have at least a single entry in [__g, __g_end); the end of the input sequence
+ if (__grouping.size() >= 0 && __g_end - __g > 1)
{
reverse(__g, __g_end);
const char* __ig = __grouping.data();
ios.imbue(std::locale(std::locale(), new my_numpunct));
{
v = -1;
- const char str[] = "123";
+ const char str[] = "123"; // no separators at all
std::ios_base::iostate err = ios.goodbit;
input_iterator<const char*> iter =
f.get(input_iterator<const char*>(str),
input_iterator<const char*>(str+sizeof(str)),
ios, err, v);
assert(iter.base() == str+sizeof(str)-1);
- assert(err == ios.failbit);
+ assert(err == ios.goodbit);
assert(v == 123);
}
{