update src/common/backend/regex/regexec.cpp.

return not matched if start point falls beyond the string
2022-08-04 12:30:22 +00:00
parent ea53267931
commit 955c8b4383
1 changed files with 2 additions and 1 deletions
--- a/src/common/backend/regex/regexec.cpp
+++ b/src/common/backend/regex/regexec.cpp
@ -181,7 +181,8 @@ int pg_regexec(regex_t* re, const chr* string, size_t len, size_t search_start,
        return REG_INVARG;
    if (re->re_csize != sizeof(chr))
        return REG_MIXED;
-
+    if (search_start > len)
+        return REG_NOMATCH;
    /* Initialize locale-dependent support */
    pg_set_regex_collation(re->re_collation);