change some Exceptions to CatchableError or Defect, fixes #10288 (#14069)

lib/impure/nre.nim

@@ -198,7 +198,7 @@ type
   Captures* = distinct RegexMatch
   CaptureBounds* = distinct RegexMatch
 
-  RegexError* = ref object of Exception
+  RegexError* = ref object of CatchableError
 
   RegexInternalError* = ref object of RegexError
     ## Internal error in the module, this probably means that there is a bug

lib/pure/asyncfutures.nim

@@ -33,7 +33,7 @@ type
 
   FutureVar*[T] = distinct Future[T]
 
-  FutureError* = object of Exception
+  FutureError* = object of Defect
     cause*: FutureBase
 
 when not defined(release):

lib/pure/net.nim

@@ -83,7 +83,7 @@ when defineSsl:
   type
     Certificate* = string ## DER encoded certificate
 
-    SslError* = object of Exception
+    SslError* = object of CatchableError
 
     SslCVerifyMode* = enum
       CVerifyNone, CVerifyPeer, CVerifyPeerUseEnvVars
@@ -146,7 +146,7 @@ type
   ReadLineResult* = enum ## result for readLineAsync
     ReadFullLine, ReadPartialLine, ReadDisconnected, ReadNone
 
-  TimeoutError* = object of Exception
+  TimeoutError* = object of CatchableError
 
   SocketFlag* {.pure.} = enum
     Peek,

lib/pure/selectors.nim

@@ -252,7 +252,7 @@ else:
       VnodeRename, VnodeRevoke
 
   type
-    IOSelectorsException* = object of Exception
+    IOSelectorsException* = object of CatchableError
 
     ReadyKey* = object
       fd* : int