Add an experimental "pointer type" parameter to sqlite3_bind_pointer(),

sqlite3_result_pointer(), and sqlite3_value_pointer().  The pointer type is
a string that must compare equal using strcmp() or else the pointer comes
through as a NULL.

FossilOrigin-Name: 211cce04e97d2e325a6ea3e99738fc71115d673dc13daeffb03ac3140deb11de

1 files changed, 4 insertions, 3 deletions

diff --git a/ext/misc/remember.c b/ext/misc/remember.c
index 97efb6ae8..b6ab2af25 100644
--- a/ext/misc/remember.c
+++ b/ext/misc/remember.c
@@ -21,8 +21,9 @@
 **    UPDATE counterTab SET cnt=remember(cnt,$PTR)+1 WHERE id=$ID
 **
 ** Prepare the above statement once.  Then to use it, bind the address
-** of the output variable to $PTR (using sqlite3_bind_pointer()) and
-** bind the id of the counter to $ID and run the prepared statement.
+** of the output variable to $PTR using sqlite3_bind_pointer() with a
+** pointer type of "carray" and bind the id of the counter to $ID and
+** run the prepared statement.
 **
 ** One can imagine doing similar things with floating-point values and
 ** strings, but this demonstration extension will stick to using just
@@ -47,7 +48,7 @@ static void rememberFunc(
   sqlite3_int64 *ptr;
   assert( argc==2 );
   v = sqlite3_value_int64(argv[0]);
-  ptr = sqlite3_value_pointer(argv[1]);
+  ptr = sqlite3_value_pointer(argv[1], "carray");
   if( ptr ) *ptr = v;
   sqlite3_result_int64(pCtx, v);
 }