Check if the target-specific variable is the same as the global

variable, and if so don't try to update it.  Savannah bug #31743.

1 files changed, 2 insertions, 1 deletions

diff --git a/read.c b/read.c
index 7b5b0dd0..761e9763 100644
--- a/read.c
+++ b/read.c
@@ -1802,7 +1802,8 @@ record_target_var (struct nameseq *filenames, char *defn,
           int len = strlen(v->name);
 
           gv = lookup_variable (v->name, len);
-          if (gv && (gv->origin == o_env_override || gv->origin == o_command))
+          if (gv && v != gv
+              && (gv->origin == o_env_override || gv->origin == o_command))
             {
               if (v->value != 0)
                 free (v->value);