diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/gmock/gmock-printers.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/include/gmock/gmock-printers.h b/include/gmock/gmock-printers.h index eae6e52d..759aa347 100644 --- a/include/gmock/gmock-printers.h +++ b/include/gmock/gmock-printers.h @@ -116,8 +116,19 @@ class TypeWithoutFormatter<T, true> { // to simplify the implementation, as much code in 'internal' needs to // use << in STL, which would conflict with our own << were it defined // in 'internal'. -template <typename T> -::std::ostream& operator<<(::std::ostream& os, const T& x) { +// +// Note that this operator<< takes a generic std::basic_ostream<Char, +// CharTraits> type instead of the more restricted std::ostream. If +// we define it to take an std::ostream instead, we'll get an +// "ambiguous overloads" compiler error when trying to print a type +// Foo that supports streaming to std::basic_ostream<Char, +// CharTraits>, as the compiler cannot tell whether +// operator<<(std::ostream&, const T&) or +// operator<<(std::basic_stream<Char, CharTraits>, const Foo&) is more +// specific. +template <typename Char, typename CharTraits, typename T> +::std::basic_ostream<Char, CharTraits>& operator<<( + ::std::basic_ostream<Char, CharTraits>& os, const T& x) { TypeWithoutFormatter<T, ::testing::internal::IsAProtocolMessage<T>::value>:: PrintValue(x, &os); return os; |