[gcc(refs/vendors/redhat/heads/gcc-8-branch)] PR fortran/89574 - ICE in conv_function_val, at fortran/trans-expr.c:3792

[Jakub Jelinek <jakub@gcc.gnu.org>]

https://gcc.gnu.org/g:9eb343c0782078badde5fa839c79e3e7dc589165

commit 9eb343c0782078badde5fa839c79e3e7dc589165
Author: Harald Anlauf <anlauf@gmx.de>
Date:   Tue Jul 21 21:37:30 2020 +0200

    PR fortran/89574 - ICE in conv_function_val, at fortran/trans-expr.c:3792
    
    When checking for an external procedure from the same file, do not
    consider symbols from different modules.
    
    gcc/fortran/
            PR fortran/89574
            * trans-decl.c (gfc_get_extern_function_decl): Check whether a
            symbol belongs to a different module.
    
    (cherry picked from commit 28f2a080cc27531a8c78aec9f44aeff4961c2a4c)

Diff:
---
 gcc/fortran/trans-decl.c              |  7 ++++++-
 gcc/testsuite/gfortran.dg/pr89574.f90 | 29 +++++++++++++++++++++++++++++
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/gcc/fortran/trans-decl.c b/gcc/fortran/trans-decl.c
index 3780d27a9f6..46cc742e23f 100644
--- a/gcc/fortran/trans-decl.c
+++ b/gcc/fortran/trans-decl.c
@@ -2064,12 +2064,17 @@ gfc_get_extern_function_decl (gfc_symbol * sym, gfc_actual_arglist *actual_args)
       if (gsym && !gsym->bind_c)
 	gsym = NULL;
     }
-  else
+  else if (sym->module == NULL)
     {
       gsym = gfc_find_gsymbol (gfc_gsym_root, sym->name);
       if (gsym && gsym->bind_c)
 	gsym = NULL;
     }
+  else
+    {
+      /* Procedure from a different module.  */
+      gsym = NULL;
+    }
 
   if (gsym && !gsym->defined)
     gsym = NULL;
diff --git a/gcc/testsuite/gfortran.dg/pr89574.f90 b/gcc/testsuite/gfortran.dg/pr89574.f90
new file mode 100644
index 00000000000..48dd0680a48
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr89574.f90
@@ -0,0 +1,29 @@
+! { dg-do compile }
+! PR fortran/89574 - ICE in conv_function_val, at fortran/trans-expr.c:3792
+
+module mod1
+contains
+  subroutine init
+  end subroutine
+end module
+
+module mod2
+contains
+  subroutine init
+  end subroutine
+end module
+
+module init
+  use mod1, only : test_init1 => init
+  use mod2, only : test_init2 => init
+  implicit none
+contains
+  subroutine sub
+    call test_init1
+    call test_init2
+    call init
+  contains
+    subroutine init
+    end subroutine
+  end subroutine
+end module