On 10/24/2011 07:47 AM, Paolo Carlini wrote:
the below is a new variant removing -Wc++0x-compat from -Wall (cannot be added to -Wextra either because bootstrap passes -W)
I don't understand the rationale for this. If the warning is problematic for bootstrap, why not just add -Wno-narrowing to the bootstrap warning flags? I haven't read the whole discussion thread yet, though.
and also, as requested by Gaby, preventing -Wno-narrowing from suppressing the warning in C++0x mode (if the user really needs to silence it, -Wno-c++0x-compat works). I also added a new testcase for that.
No. I added -Wno-narrowing specifically to suppress the diagnostic in C++0x mode; see c++/49793. There are several diagnostics required by standards that can be suppressed by -Wno- flags, such as -Wno-long-long.
Jason
