Fortran: fix front-end memleak after failure during parsing of NULLIFY

gcc/fortran/ChangeLog:

	* match.cc (gfc_match_nullify): Free matched expression when
	cleaning up.
	* primary.cc (match_variable): Initialize result to NULL.

diff --git a/gcc/fortran/match.cc b/gcc/fortran/match.cc
index c3c330520d6f2ddee51aa9a3a2bbe80938f9fa27..ec9e5873204a654bb60b6cb4de45499dfbdb6c05 100644 (file)
--- a/gcc/fortran/match.cc
+++ b/gcc/fortran/match.cc
@@ -5071,6 +5071,7 @@ cleanup:
   new_st.expr1 = NULL;
   gfc_free_expr (new_st.expr2);
   new_st.expr2 = NULL;
+  gfc_free_expr (p);
   return MATCH_ERROR;
 }
 

diff --git a/gcc/fortran/primary.cc b/gcc/fortran/primary.cc
index 8a38720422ec98c5754ebb924e85c925ca5c67c4..161d4c269648053e7017b09932410cd416f5c88c 100644 (file)
--- a/gcc/fortran/primary.cc
+++ b/gcc/fortran/primary.cc
@@ -4298,6 +4298,8 @@ match_variable (gfc_expr **result, int equiv_flag, int host_flag)
   locus where, old_loc;
   match m;
 
+  *result = NULL;
+
   /* Since nothing has any business being an lvalue in a module
      specification block, an interface block or a contains section,
      we force the changed_symbols mechanism to work by setting