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commit 014e9215fec0ef61057938b63a11e7b45766ce6e
Author: Thomas Koenig <tkoe...@gcc.gnu.org>
Date: Sun Mar 16 08:49:40 2025 +0100
Fortran: Clean up UNSIGNED, mention option changes.
* htdocs/gcc-15/changes.html: Clean up UNSIGNED
description. Mention changes to -fc-prototypes.
Describe -Wexternal-interface-mismatch.
diff --git a/htdocs/gcc-15/changes.html b/htdocs/gcc-15/changes.html
index 7e5da369..42b713a2 100644
--- a/htdocs/gcc-15/changes.html
+++ b/htdocs/gcc-15/changes.html
@@ -182,6 +182,7 @@ asm (".text; %cc0: mov %cc2, %%r0; .previous;"
either add
<a
href="https://gcc.gnu.org/onlinedocs/gcc/C-Dialect-Options.html#index-std-1";>-std=</a>
to your build flags, or port your code; see <a
href="porting_to.html#c23">the porting notes</a>.
+ </li>
<li>Some more C23 features have been implemented:
<ul>
<li><code>#embed</code> preprocessing directive support.</li>
@@ -427,15 +428,18 @@ asm (".text; %cc0: mov %cc2, %%r0; .previous;"
<h3 id="fortran">Fortran</h3>
<ul>
- <li>Fortran 2023: The <code>selected_logical_kind</code> intrinsic function
- and, in the <code>ISO_FORTRAN_ENV</code> module, the named constants
- <code>logical{8,16,32,64}</code> and <code>real16</code> were added.</li>
- <li>Experimental support for <code>unsigned</code> integers, enabled by
- <code>-funsigned</code>; see <a
- href="https://gcc.gnu.org/onlinedocs/gfortran/Unsigned-integers.html";
- >gfortran documentation</a> for details. These have been proposed
- (<a href="https://j3-fortran.org/doc/year/24/24-116.txt";>J3/24-116</a>)
- for inclusion in the next Fortran standard.</li>
+ <li>
+ Experimental support for <code>unsigned</code> modular integers,
+ enabled by <code>-funsigned</code>;
+ see <a
href="https://gcc.gnu.org/onlinedocs/gfortran/Unsigned-integers.html";>
+ gfortran documentation</a> for details. This follows
+ (<a href="https://j3-fortran.org/doc/year/24/24-116.txt";>J3/24-116</a>).
+ With this option in force, the <code>selected_logical_kind</code>
+ intrinsic function and, in the <code>ISO_FORTRAN_ENV</code>
+ module, the named constants <code>logical{8,16,32,64}</code> and
+ <code>real16</code> were added. The <code>ISO_C_BINDING</code>
+ module has been extended accordingly.
+ </li>
<li>Missing commas separating descriptors in input/output format strings are
no
longer permitted by default and are rejected at run-time unless
-std=legacy
is used when compiling the main program unit. See Fortran 2023
constraint C1302.
@@ -453,6 +457,18 @@ asm (".text; %cc0: mov %cc2, %%r0; .previous;"
it is recommended to recompile all artifacts. The OpenCoarrays library
is not affected, because it provides backwards compatibility with the
older ABI.</li>
+ <li>
+ The <code>-Wexternal-interface-mismatch</code> option has been
+ added. This checks for mismatches between the argument lists in
+ dummy external arguments, and is implied by <code>-Wall</code>
+ and <code>-fc-prototypes-external</code> options.
+ </li>
+ <li>
+ The <code>-fc-prototypes</code> now also generates prototypes for
+ interoperable procedures with assumed shape and assumed rank
+ arguments that require the header file
+ <code><ISO_Fortran_binding.h></code>.
+ </li>
</ul>
<!-- <h3 id="go">Go</h3> -->
-----------------------------------------------------------------------
Summary of changes:
htdocs/gcc-15/changes.html | 34 +++++++++++++++++++++++++---------
1 file changed, 25 insertions(+), 9 deletions(-)
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