https://gcc.gnu.org/g:21ee71afa72746367cab7847f950448f04607dd2
commit r15-6704-g21ee71afa72746367cab7847f950448f04607dd2
Author: Jakub Jelinek <ja...@redhat.com>
Date: Wed Jan 8 20:07:47 2025 +0100
fortran: Bump MOD_VERSION to "16" [PR118337]
As mentioned in the PR, there is a *.mod incompatibility between GCC 14 and
GCC 15, at least when using iso_c_binding or iso_fortran_env intrinsic
modules, because new entries have been added to those modules in the middle,
causing changes in the constants emitted in the *.mod files.
Also, I fear modules produced with GCC 15 with -funsigned and using UNSIGNED
in the modules will be unreadable by GCC 14.
The following patch just bumps MOD_VERSION for this.
Note, a patch for accepting also MOD_VERSION "15" has been posted
incrementally.
2025-01-08 Jakub Jelinek <ja...@redhat.com>
PR fortran/118337
* module.cc (MOD_VERSION): Bump to "16".
Diff:
---
gcc/fortran/module.cc | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/gcc/fortran/module.cc b/gcc/fortran/module.cc
index 6ac51d7c3b12..a058a714805a 100644
--- a/gcc/fortran/module.cc
+++ b/gcc/fortran/module.cc
@@ -84,7 +84,7 @@ along with GCC; see the file COPYING3. If not see
/* Don't put any single quote (') in MOD_VERSION, if you want it to be
recognized. */
-#define MOD_VERSION "15"
+#define MOD_VERSION "16"
/* Structure that describes a position within a module file. */
