1 files changed, 10 insertions, 4 deletions

diff --git a/editors/sed.c b/editors/sed.c
index 3fc40ceef..7ed9937d2 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -350,10 +350,16 @@ static int get_address(const char *my_str, int *linenum, regex_t ** regex)
                 if (*my_str == '\\')
                         delimiter = *++pos;
                 next = index_of_next_unescaped_regexp_delim(delimiter, ++pos);
-                temp = copy_parsing_escapes(pos, next);
-                *regex = xzalloc(sizeof(regex_t));
-                xregcomp(*regex, temp, G.regex_type);
-                free(temp);
+                if (next != 0) {
+                        temp = copy_parsing_escapes(pos, next);
+                        G.previous_regex_ptr = *regex = xzalloc(sizeof(regex_t));
+                        xregcomp(*regex, temp, G.regex_type);
+                        free(temp);
+                } else {
+                        *regex = G.previous_regex_ptr;
+                        if (!G.previous_regex_ptr)
+                                bb_error_msg_and_die("no previous regexp");
+                }
                 /* Move position to next character after last delimiter */
                 pos += (next+1);
         }