2 files changed, 45 insertions, 0 deletions
diff --git a/src/test/regress/expected/regex.out b/src/test/regress/expected/regex.out
index 0923ad9b5b0..86477cc506c 100644
--- a/src/test/regress/expected/regex.out
+++ b/src/test/regress/expected/regex.out
@@ -567,6 +567,43 @@ select 'a' ~ '()+\1';
  t
 (1 row)
 
+-- Add coverage for some cases in checkmatchall
+select regexp_match('xy', '.|...');
+ regexp_match 
+--------------
+ {x}
+(1 row)
+
+select regexp_match('xyz', '.|...');
+ regexp_match 
+--------------
+ {xyz}
+(1 row)
+
+select regexp_match('xy', '.*');
+ regexp_match 
+--------------
+ {xy}
+(1 row)
+
+select regexp_match('fooba', '(?:..)*');
+ regexp_match 
+--------------
+ {foob}
+(1 row)
+
+select regexp_match('xyz', repeat('.', 260));
+ regexp_match 
+--------------
+ 
+(1 row)
+
+select regexp_match('foo', '(?:.|){99}');
+ regexp_match 
+--------------
+ {foo}
+(1 row)
+
 -- Error conditions
 select 'xyz' ~ 'x(\w)(?=\1)';  -- no backrefs in LACONs
 ERROR:  invalid regular expression: invalid backreference number
diff --git a/src/test/regress/sql/regex.sql b/src/test/regress/sql/regex.sql
index a1742240c4b..b03a8d9ac22 100644
--- a/src/test/regress/sql/regex.sql
+++ b/src/test/regress/sql/regex.sql
@@ -135,6 +135,14 @@ select 'a' ~ '.. ()|\1';
 select 'a' ~ '()*\1';
 select 'a' ~ '()+\1';
 
+-- Add coverage for some cases in checkmatchall
+select regexp_match('xy', '.|...');
+select regexp_match('xyz', '.|...');
+select regexp_match('xy', '.*');
+select regexp_match('fooba', '(?:..)*');
+select regexp_match('xyz', repeat('.', 260));
+select regexp_match('foo', '(?:.|){99}');
+
 -- Error conditions
 select 'xyz' ~ 'x(\w)(?=\1)';  -- no backrefs in LACONs
 select 'xyz' ~ 'x(\w)(?=(\1))';