Committed to 6-branch and trunk.
2016-10-11 Steven G. Kargl <ka...@gcc.gnu.org>
PR fortran/77942
* simplify.c (gfc_simplify_cshift): Check for zero.
2016-10-11 Steven G. Kargl <ka...@gcc.gnu.org>
PR fortran/77942
* gfortran.dg/pr77942.f90
Index: gcc/fortran/simplify.c
===================================================================
--- gcc/fortran/simplify.c (revision 241006)
+++ gcc/fortran/simplify.c (working copy)
@@ -1989,7 +1989,7 @@ gfc_simplify_cshift (gfc_expr *array, gf
shft = shft < 0 ? 1 - shft : shft;
/* Special case: Shift to the original order! */
- if (shft % sz == 0)
+ if (sz == 0 || shft % sz == 0)
return a;
result = gfc_copy_expr (a);
Index: gcc/testsuite/gfortran.dg/pr77942.f90
===================================================================
--- gcc/testsuite/gfortran.dg/pr77942.f90 (nonexistent)
+++ gcc/testsuite/gfortran.dg/pr77942.f90 (working copy)
@@ -0,0 +1,5 @@
+! { dg-do compile }
+program p
+ character, parameter :: c(2) = 'a'
+ print *, cshift(c(2:1), 1)
+end
--
Steve
