doc: mention handling of {0} in -Wmissing-field-initializers (PR 71250)

	PR other/71250
	* doc/invoke.texi (-Wmissing-field-initializers): Mention that warning
	is suppressed for '{ 0 }' in C.

From-SVN: r247018

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5ded09b27fdfbf91b951f88e3cfed10b7285836b..c908048f21b46a70ad66b6c0b8022f7b5031f2e7 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-04-20  Alexander Monakov  <amonakov@ispras.ru>
+
+       PR other/71250
+       * doc/invoke.texi (-Wmissing-field-initializers): Mention that warning
+       is suppressed for '{ 0 }' in C.
+
 2017-04-20  Jakub Jelinek  <jakub@redhat.com>
 
        * BASE-VER: Set to 8.0.0.

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 19a85b6cd9a37d9696d151fd48379c7afc02a662..5ee13b8984a8626f2d2b57841b8aa93a4fba3553 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -6220,7 +6220,15 @@ struct s @{ int f, g, h; @};
 struct s x = @{ .f = 3, .g = 4 @};
 @end smallexample
 
-In C++ this option does not warn either about the empty @{ @}
+In C this option does not warn about the universal zero initializer
+@samp{@{ 0 @}}:
+
+@smallexample
+struct s @{ int f, g, h; @};
+struct s x = @{ 0 @};
+@end smallexample
+
+Likewise, in C++ this option does not warn about the empty @{ @}
 initializer, for example:
 
 @smallexample