From: Jerry DeLisle <jvdelisle@gcc.gnu.org>
Date: Sat, 17 Jan 2026 17:23:53 +0000 (-0800)
Subject: Fortran: Documentation update on -fdefault-real-8 and family
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a38310ca138319c463b6892cc723970a37aeee9e;p=thirdparty%2Fgcc.git

Fortran: Documentation update on -fdefault-real-8 and family

	PR fortran/122957

gcc/fortran/ChangeLog:

	* invoke.texi: Add note that these features are incompatible
	with user defined derived type I/O. (DTIO)
---

diff --git a/gcc/fortran/invoke.texi b/gcc/fortran/invoke.texi
index 0f92f325a70..549c45032fd 100644
--- a/gcc/fortran/invoke.texi
+++ b/gcc/fortran/invoke.texi
@@ -592,6 +592,8 @@ BOZ literal constant conversion, and I/O and calls to intrinsic procedures
 when passing a value to the @code{kind=} dummy argument.  Inspection of the
 intermediate representation of the translated Fortran code, produced by
 @option{-fdump-fortran-original} or @option{-fdump-tree-original}, is suggested.
+NOTE: These options are incompatible with user defined derived
+type I/O (DTIO).
 
 @opindex std=@var{std}
 @item -std=@var{std}