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authorHarald Anlauf <anlauf@gmx.de>2023-11-23 22:48:38 +0100
committerHarald Anlauf <anlauf@gmx.de>2023-11-26 20:10:20 +0100
commitc9d029ba2ceb435e31492c1f3f0fd3edf0e386be (patch)
treead58c9235693685fca039d938a84549ef40dc772 /gcc
parent22f42cdcb091b7046f4d687342ac0913efb95838 (diff)
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Fortran: avoid obsolescence warning for COMMON with submodule [PR111880]
gcc/fortran/ChangeLog: PR fortran/111880 * resolve.cc (resolve_common_vars): Do not call gfc_add_in_common for symbols that are USE associated or used in a submodule. gcc/testsuite/ChangeLog: PR fortran/111880 * gfortran.dg/pr111880.f90: New test.
Diffstat (limited to 'gcc')
-rw-r--r--gcc/fortran/resolve.cc4
-rw-r--r--gcc/testsuite/gfortran.dg/pr111880.f9022
2 files changed, 24 insertions, 2 deletions
diff --git a/gcc/fortran/resolve.cc b/gcc/fortran/resolve.cc
index 81a1465..166b702 100644
--- a/gcc/fortran/resolve.cc
+++ b/gcc/fortran/resolve.cc
@@ -986,8 +986,8 @@ resolve_common_vars (gfc_common_head *common_block, bool named_common)
/* gfc_add_in_common may have been called before, but the reported errors
have been ignored to continue parsing.
- We do the checks again here. */
- if (!csym->attr.use_assoc)
+ We do the checks again here, unless the symbol is USE associated. */
+ if (!csym->attr.use_assoc && !csym->attr.used_in_submodule)
{
gfc_add_in_common (&csym->attr, csym->name, &common_block->where);
gfc_notify_std (GFC_STD_F2018_OBS, "COMMON block at %L",
diff --git a/gcc/testsuite/gfortran.dg/pr111880.f90 b/gcc/testsuite/gfortran.dg/pr111880.f90
new file mode 100644
index 0000000..c0cd98a
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr111880.f90
@@ -0,0 +1,22 @@
+! { dg-do compile }
+! { dg-options "-std=f2018" }
+! PR fortran/111880 - redundant warning of obsolescent COMMON with submodule
+
+module third_party_module
+ integer :: some_param
+ common /not_my_code/ some_param ! { dg-warning "COMMON block" }
+end module third_party_module
+
+module foo
+ use third_party_module
+ interface
+ module subroutine bar()
+ end subroutine bar
+ end interface
+end module foo
+
+submodule (foo) foo_submod ! We do not need a warning here!
+contains
+ module procedure bar
+ end procedure bar
+end submodule foo_submod