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

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

diff --git a/editors/sed.c b/editors/sed.c
index b74941944e7e904d36c6c527d6213e3dbe91be72..e7b2c214af2e34d7a64351cfb624a68a2189b07c 100644 (file)
--- 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) {