[1080042][8f245009b0] Big bundle of regexp engine fixes and improvements

contributed from Tom Lane of the postgres project.

1 files changed, 53 insertions, 0 deletions

diff --git a/tests/reg.test b/tests/reg.test
index 0ebfa11..6cd2eb3 100644
--- a/tests/reg.test
+++ b/tests/reg.test
@@ -1068,6 +1068,59 @@ test reg-33.13 {Bug 1810264 - infinite loop} {
 test reg-33.14 {Bug 1810264 - super-expensive expression} nonPortable {
     regexp {(x{200}){200}$y} {x}
 } 0
+
+test reg-33.15 {constraint fixes} {
+    regexp {(^)+^} x
+} 1
+test reg-33.16 {constraint fixes} {
+    regexp {($^)+} x
+} 0
+test reg-33.17 {constraint fixes} {
+    regexp {(^$)*} x
+} 1
+test reg-33.18 {constraint fixes} {
+    regexp {(^(?!aa))+} {aa bb cc}
+} 0
+test reg-33.19 {constraint fixes} {
+    regexp {(^(?!aa)(?!bb)(?!cc))+} {aa x}
+} 0
+test reg-33.20 {constraint fixes} {
+    regexp {(^(?!aa)(?!bb)(?!cc))+} {bb x}
+} 0
+test reg-33.21 {constraint fixes} {
+    regexp {(^(?!aa)(?!bb)(?!cc))+} {cc x}
+} 0
+test reg-33.22 {constraint fixes} {
+    regexp {(^(?!aa)(?!bb)(?!cc))+} {dd x}
+} 1
+
+test reg-33.23 {} {
+    regexp {abcd(\m)+xyz} x
+} 0
+test reg-33.24 {} {
+    regexp {abcd(\m)+xyz} a
+} 0
+test reg-33.25 {} {
+    regexp {^abcd*(((((^(a c(e?d)a+|)+|)+|)+|)+|a)+|)} x
+} 0
+test reg-33.26 {} {
+    regexp {a^(^)bcd*xy(((((($a+|)+|)+|)+$|)+|)+|)^$} x
+} 0
+test reg-33.27 {} {
+    regexp {xyz(\Y\Y)+} x
+} 0
+test reg-33.28 {} {
+    regexp {x|(?:\M)+} x
+} 1
+test reg-33.29 {} {
+    # This is near the limits of the RE engine
+    regexp [string repeat x*y*z* 480] x
+} 1
+
+test reg-33.30 {Bug 1080042} {
+    regexp {(\Y)+} foo
+} 1
+
 
 # cleanup
 ::tcltest::cleanupTests