re PR fortran/85084 (ICE: out of memory allocating 18446744073709551600 bytes ...)

2018-03-27  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/85084
	* frontend-passes.c (gfc_run_passes): Do not run front-end
	optimizations if a previous error occurred.

2018-03-27  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/85084
	* gfortran.dg/matmul_rank_1.f90: New test.

From-SVN: r258900

gcc/fortran/ChangeLog

 2018-03-27  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
+	PR fortran/85084
+	* frontend-passes.c (gfc_run_passes): Do not run front-end
+	optimizations if a previous error occurred.
+
+2018-03-27  Thomas Koenig  <tkoenig@gcc.gnu.org>
 	Harald Anlauf  <anlauf@gmx.de>
 
 	PR fortran/85083

gcc/fortran/frontend-passes.c

@@ -156,6 +156,10 @@ gfc_run_passes (gfc_namespace *ns)
   check_locus (ns);
 #endif
 
+  gfc_get_errors (&w, &e);
+  if (e > 0)
+    return;
+
   if (flag_frontend_optimize || flag_frontend_loop_interchange)
     optimize_namespace (ns);
 
@@ -168,10 +172,6 @@ gfc_run_passes (gfc_namespace *ns)
       expr_array.release ();
     }
 
-  gfc_get_errors (&w, &e);
-  if (e > 0)
-   return;
-
   if (flag_realloc_lhs)
     realloc_strings (ns);
 }

gcc/testsuite/ChangeLog

 2018-03-27  Thomas Koenig  <tkoenig@gcc.gnu.org>
+
+	PR fortran/85084
+	* gfortran.dg/matmul_rank_1.f90: New test.
+
+2018-03-27  Thomas Koenig  <tkoenig@gcc.gnu.org>
 	Harald Anlauf  <anlauf@gmx.de>
 
 	* gfortran.dg/structure_constructor_15.f90: New test.

gcc/testsuite/gfortran.dg/matmul_rank_1.f90

+! { dg-do compile }
+! { dg-additional-options "-ffrontend-optimize" }
+! PR 85044 - used to die on allocating a negative amount of memory.
+! Test case by Gerhard Steinmetz.
+program p
+   real :: a(3,3) = 1.0
+   real :: b(33)
+   b = matmul(a, a) ! { dg-error "Incompatible ranks" }
+end