carbon-language/carbon-lang
1
0
Fork 0
mirror of https://github.com/carbon-language/carbon-lang.git synced 2026-10-05 14:21:09 +01:00
Code Issues Packages Projects Releases 10 Wiki Activity

Prevent ostream << for pointers to printable types. (#837)

Browse Source 
Co-authored-by: Geoff Romer <gromer@google.com>
This commit is contained in:
Jon Meow
2021-09-21 10:44:00 -07:00
committed by GitHub
co-authored by Geoff Romer
parent 15434320e6
commit 7beaabc934
1 changed files with 8 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
common/ostream.h
+8
View File
@@ -18,6 +18,14 @@ auto operator<<(llvm::raw_ostream& out, const T& obj) -> llvm::raw_ostream& {
return out;
}
// Prevents ostream << for pointers to printable types.
template <typename T, typename std::enable_if<std::is_member_function_pointer<
decltype(&T::Print)>::value>::type* = nullptr>
__attribute__((unavailable(
"Received a pointer to a printable type, are you missing a `*`? "
"To print as a pointer, cast to void*."))) auto
operator<<(llvm::raw_ostream& out, const T* /*obj*/) -> llvm::raw_ostream&;
} // namespace Carbon
#endif // COMMON_OSTREAM_H_