D.gnu - [Bug 207] New: _d_throw is not treated as `noreturn`.
- via D.gnu (27/29) Jan 08 2016 Date: Sat, 9 Jan 2016 06:09:11 +0000
Date: Sat, 9 Jan 2016 06:09:11 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" http://bugzilla.gdcproject.org/show_bug.cgi?id=207 Bug ID: 207 Summary: _d_throw is not treated as `noreturn`. Product: GDC Version: development Hardware: All OS: All Status: NEW Severity: normal Priority: Normal Component: gdc Assignee: ibuclaw gdcproject.org Reporter: art.08.09 gmail.com `throw expr;` is not assumed to never return. This results in *much* worse codegen, which can be seen by substituting{ throw expr; import gcc.builtins; __builtin_unreachable(); }forthrow expr;That is not a perfect workaround, as the compiler then warns about that `builtin_unreachable()` statement being unreachable (but at least does the right thing and eliminates the unreachable paths). Using `assert(0)` works, but adds unnecessary bloat (the dead trap code in release mode). -- You are receiving this mail because: You are watching all bug changes.
Jan 08 2016