cgosqlite: remove allocs in bind_{int64,null,double}

Updates tailscale/corp#9919

Signed-off-by: Brad Fitzpatrick <[email protected]>

Author: bradfitz

cgosqlite/cgosqlite.go

@@ -302,15 +302,15 @@ func (stmt *Stmt) StepResult() (row bool, lastInsertRowID, changes int64, d time
 }
 
 func (stmt *Stmt) BindDouble(col int, val float64) error {
-	return errCode(C.sqlite3_bind_double(stmt.stmt.ptr(), C.int(col), C.double(val)))
+	return errCode(C.ts_sqlite3_bind_double(stmt.stmt.int(), C.int(col), C.double(val)))
 }
 
 func (stmt *Stmt) BindInt64(col int, val int64) error {
-	return errCode(C.sqlite3_bind_int64(stmt.stmt.ptr(), C.int(col), C.sqlite3_int64(val)))
+	return errCode(C.ts_sqlite3_bind_int64(stmt.stmt.int(), C.int(col), C.sqlite3_int64(val)))
 }
 
 func (stmt *Stmt) BindNull(col int) error {
-	return errCode(C.sqlite3_bind_null(stmt.stmt.ptr(), C.int(col)))
+	return errCode(C.ts_sqlite3_bind_null(stmt.stmt.int(), C.int(col)))
 }
 
 func (stmt *Stmt) BindText64(col int, val string) error {

cgosqlite/cgosqlite.h

@@ -23,6 +23,18 @@ static int bind_blob64(handle_sqlite3_stmt stmt, int col, char* str, sqlite3_uin
 	return sqlite3_bind_blob64((sqlite3_stmt*)(stmt), col, str, n, SQLITE_TRANSIENT);
 }
 
+static int ts_sqlite3_bind_double(handle_sqlite3_stmt stmt, int col, double v) {
+	return sqlite3_bind_double((sqlite3_stmt*)(stmt), col, v);
+}
+
+static int ts_sqlite3_bind_int64(handle_sqlite3_stmt stmt, int col, sqlite3_int64 v) {
+	return sqlite3_bind_int64((sqlite3_stmt*)(stmt), col, v);
+}
+
+static int ts_sqlite3_bind_null(handle_sqlite3_stmt stmt, int col) {
+	return sqlite3_bind_null((sqlite3_stmt*)(stmt), col);
+}
+
 // We only need the Go string's memory for the duration of the call,
 // and the GC pins it for us if we pass the gostring_t to C, so we
 // do the conversion here instead of with C.CString.