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-rw-r--r--gcc/doc/invoke.texi6
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 4f93c7e..7c09680 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -4337,8 +4337,10 @@ without this option, certain GNU extensions and traditional C and C++
features are supported as well. With this option, they are rejected.
@option{-Wpedantic} does not cause warning messages for use of the
-alternate keywords whose names begin and end with @samp{__}. Pedantic
-warnings are also disabled in the expression that follows
+alternate keywords whose names begin and end with @samp{__}. This alternate
+format can also be used to disable warnings for non-ISO @samp{__intN} types,
+i.e. @samp{__intN__}.
+Pedantic warnings are also disabled in the expression that follows
@code{__extension__}. However, only system header files should use
these escape routes; application programs should avoid them.
@xref{Alternate Keywords}.