On 10/13/2011 04:24 PM, Jason Merrill wrote:
On 10/13/2011 09:53 AM, Paolo Carlini wrote:
Yes I briefly wondered that but I know *so* little about that front
end... Do you think we can just add it? Probably yes ;)
Definitely. Anything supported in C++ should also be in Obj-C++ by
default.
Ok, many thanks to Mike too for the additional clarifications.
I tested on x86_64-linux the below. Ok for mainline?
Thanks,
Paolo.
//////////////////////
/gcc
2011-10-13 Paolo Carlini <paolo.carl...@oracle.com>
PR c++/17212
* c-family/c.opt ([Wformat-zero-length]): Add C++ and Objective-C++.
* doc/invoke.texi: Update.
/testsuite
2011-10-13 Paolo Carlini <paolo.carl...@oracle.com>
PR c++/17212
* g++.dg/warn/format6.C: New.
* obj-c++.dg/warn6.mm: Likewise.
Index: doc/invoke.texi
===================================================================
--- doc/invoke.texi (revision 179947)
+++ doc/invoke.texi (working copy)
@@ -3190,7 +3190,7 @@ in the case of @code{scanf} formats, this option w
warning if the unused arguments are all pointers, since the Single
Unix Specification says that such unused arguments are allowed.
-@item -Wno-format-zero-length @r{(C and Objective-C only)}
+@item -Wno-format-zero-length @r{(C, C++, Objective-C and Objective-C++ only)}
@opindex Wno-format-zero-length
@opindex Wformat-zero-length
If @option{-Wformat} is specified, do not warn about zero-length formats.
Index: c-family/c.opt
===================================================================
--- c-family/c.opt (revision 179947)
+++ c-family/c.opt (working copy)
@@ -396,7 +396,7 @@ C ObjC C++ ObjC++ Var(warn_format_y2k) Warning
Warn about strftime formats yielding 2-digit years
Wformat-zero-length
-C ObjC Var(warn_format_zero_length) Warning
+C ObjC C++ ObjC++ Var(warn_format_zero_length) Warning
Warn about zero-length formats
Wformat=
Index: testsuite/g++.dg/warn/format6.C
===================================================================
--- testsuite/g++.dg/warn/format6.C (revision 0)
+++ testsuite/g++.dg/warn/format6.C (revision 0)
@@ -0,0 +1,7 @@
+// PR c++/17212
+// { dg-options "-Wformat -Wno-format-zero-length" }
+
+void f()
+{
+ __builtin_printf("");
+}
Index: testsuite/obj-c++.dg/warn6.mm
===================================================================
--- testsuite/obj-c++.dg/warn6.mm (revision 0)
+++ testsuite/obj-c++.dg/warn6.mm (revision 0)
@@ -0,0 +1,7 @@
+// PR c++/17212
+// { dg-options "-Wformat -Wno-format-zero-length" }
+
+void f()
+{
+ __builtin_printf("");
+}
