sed: fix bug 623 (SEGV on some sed commands)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/editors/sed.c b/editors/sed.c
index b74941944..e7b2c214a 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -690,10 +690,8 @@ static int do_subst_command(sed_cmd_t *sed_cmd, char **line_p)
                 if (sed_cmd->which_match)
                         break;
 
-                if (*line == '\0')
-                        break;
 //maybe (G.regmatch[0].rm_eo ? REG_NOTBOL : 0) instead of unconditional REG_NOTBOL?
-        } while (regexec(current_regex, line, 10, G.regmatch, REG_NOTBOL) != REG_NOMATCH);
+        } while (*line && regexec(current_regex, line, 10, G.regmatch, REG_NOTBOL) != REG_NOMATCH);
 
         /* Copy rest of string into output pipeline */
         while (1) {