Hi All,

This is a more or less obvious patch. The action is in resolve.cc. The
chunk in symbol.cc is a tidy up of a diagnostic marker to distinguish where
the 'no IMPLICIT type' error was coming from and the chunk in trans-decl.cc
follows from discussion with Harald on the PR.

Regtests fine. OK for mainline and backporting in a couple of weeks?

Paul

Fortran: Detect 'no implicit type' error in right place [PR103471]

2024-04-19  Paul Thomas  <pa...@gcc.gnu.org>

gcc/fortran
PR fortran/103471
* resolve.cc (gfc_resolve_index_1): Block index expressions of
unknown type from being converted to default integer, avoiding
the fatal error in trans-decl.cc.
* symbol.cc (gfc_set_default_type): Remove '(symbol)' from the
'no IMPLICIT type' error message.
* trans-decl.cc (gfc_get_symbol_decl): Change fatal error locus
to that of the symbol declaration.
(gfc_trans_deferred_vars): Remove two trailing tabs.

gcc/testsuite/
PR fortran/103471
* gfortran.dg/pr103471.f90: New test.
diff --git a/gcc/fortran/resolve.cc b/gcc/fortran/resolve.cc
index 6b3e5ba4fcb..9b7fabd3707 100644
--- a/gcc/fortran/resolve.cc
+++ b/gcc/fortran/resolve.cc
@@ -5001,7 +5001,8 @@ gfc_resolve_index_1 (gfc_expr *index, int check_scalar,

   if ((index->ts.kind != gfc_index_integer_kind
        && force_index_integer_kind)
-      || index->ts.type != BT_INTEGER)
+      || (index->ts.type != BT_INTEGER
+	  && index->ts.type != BT_UNKNOWN))
     {
       gfc_clear_ts (&ts);
       ts.type = BT_INTEGER;
diff --git a/gcc/fortran/symbol.cc b/gcc/fortran/symbol.cc
index 3a3b6de5cec..8f7deac1d1e 100644
--- a/gcc/fortran/symbol.cc
+++ b/gcc/fortran/symbol.cc
@@ -320,7 +320,7 @@ gfc_set_default_type (gfc_symbol *sym, int error_flag, gfc_namespace *ns)
 		       "; did you mean %qs?",
 		       sym->name, &sym->declared_at, guessed);
 	  else
-	    gfc_error ("Symbol %qs at %L has no IMPLICIT type(symbol)",
+	    gfc_error ("Symbol %qs at %L has no IMPLICIT type",
 		       sym->name, &sym->declared_at);
 	  sym->attr.untyped = 1; /* Ensure we only give an error once.  */
 	}
diff --git a/gcc/fortran/trans-decl.cc b/gcc/fortran/trans-decl.cc
index e160c5c98c1..301439baaf5 100644
--- a/gcc/fortran/trans-decl.cc
+++ b/gcc/fortran/trans-decl.cc
@@ -1797,7 +1797,8 @@ gfc_get_symbol_decl (gfc_symbol * sym)
     }

   if (sym->ts.type == BT_UNKNOWN)
-    gfc_fatal_error ("%s at %C has no default type", sym->name);
+    gfc_fatal_error ("%s at %L has no default type", sym->name,
+		     &sym->declared_at);

   if (sym->attr.intrinsic)
     gfc_internal_error ("intrinsic variable which isn't a procedure");
@@ -5214,8 +5215,8 @@ gfc_trans_deferred_vars (gfc_symbol * proc_sym, gfc_wrapped_block * block)
 	tree tmp = lookup_attribute ("omp allocate",
 				     DECL_ATTRIBUTES (n->sym->backend_decl));
 	tmp = TREE_VALUE (tmp);
-	TREE_PURPOSE (tmp) = se.expr;
-	TREE_VALUE (tmp) = align;
+	TREE_PURPOSE (tmp) = se.expr;
+	TREE_VALUE (tmp) = align;
 	TREE_PURPOSE (TREE_CHAIN (tmp)) = init_stmtlist;
 	TREE_VALUE (TREE_CHAIN (tmp)) = cleanup_stmtlist;
       }
diff --git a/gcc/testsuite/gfortran.dg/pr93484.f90 b/gcc/testsuite/gfortran.dg/pr93484.f90
new file mode 100644
index 00000000000..4dcad47e8da
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/pr103471.f90
@@ -0,0 +1,13 @@
+! { dg-do compile }
+! Test the fix for PR103471 in which, rather than giving a "no IMPLICIT type"
+! message, gfortran took to ICEing. The fuzzy symbol check for 'kk' demonstrates
+! that the error is being detected in the right place.
+!
+! Contributed by Gerhard Steinmetz  <gs...@t-online.de>
+!
+program p
+   implicit none
+   integer, parameter :: x(4) = [1,2,3,4]
+   integer :: kk
+   print *, [real(x(k))] ! { dg-error "has no IMPLICIT type; did you mean .kk.\\?" }
+end

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