From: Harald Anlauf <anlauf@gmx.de>
Date: Tue, 21 Mar 2023 18:58:31 +0000 (+0100)
Subject: Fortran: reject MODULE PROCEDURE outside generic module interface [PR99036]
X-Git-Tag: basepoints/gcc-14~417
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=dd282b16bfd3c6e218dffb7798a375365b10ae22;p=thirdparty%2Fgcc.git

Fortran: reject MODULE PROCEDURE outside generic module interface [PR99036]

gcc/fortran/ChangeLog:

	PR fortran/99036
	* decl.cc (gfc_match_modproc): Reject MODULE PROCEDURE if not in a
	generic module interface.

gcc/testsuite/ChangeLog:

	PR fortran/99036
	* gfortran.dg/pr99036.f90: New test.
---

diff --git a/gcc/fortran/decl.cc b/gcc/fortran/decl.cc
index c8f0bb83c2c6..233bf244d621 100644
--- a/gcc/fortran/decl.cc
+++ b/gcc/fortran/decl.cc
@@ -9995,9 +9995,10 @@ gfc_match_modproc (void)
   gfc_namespace *module_ns;
   gfc_interface *old_interface_head, *interface;
 
-  if ((gfc_state_stack->state != COMP_INTERFACE
-       && gfc_state_stack->state != COMP_CONTAINS)
-      || gfc_state_stack->previous == NULL
+  if (gfc_state_stack->previous == NULL
+      || (gfc_state_stack->state != COMP_INTERFACE
+	  && (gfc_state_stack->state != COMP_CONTAINS
+	      || gfc_state_stack->previous->state != COMP_INTERFACE))
       || current_interface.type == INTERFACE_NAMELESS
       || current_interface.type == INTERFACE_ABSTRACT)
     {
diff --git a/gcc/testsuite/gfortran.dg/pr99036.f90 b/gcc/testsuite/gfortran.dg/pr99036.f90
new file mode 100644
index 000000000000..a6e396f6f71c
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr99036.f90
@@ -0,0 +1,9 @@
+! { dg-do compile }
+! PR fortran/99036 - ICE in gfc_current_interface_head
+! Contributed by G. Steinmetz
+
+module m
+contains
+  module procedure s ! { dg-error "must be in a generic module interface" }
+  end
+end