Add comment

nurse · nurse · commit 25bf14c28985 · 2016-07-07T15:15:55.000+09:00
diff --git a/ext/mysql2/statement.c b/ext/mysql2/statement.c
@@ -224,6 +224,7 @@ static int my_big2ll(VALUE bignum, LONG_LONG *ptr)
     }
     else {
         if (len == 8 && nlz_bits == 0 &&
+          /* only -0x8000000000000000 is safe if `len == 8 && nlz_bits == 0` */
 #ifdef HAVE_RB_ABSINT_SINGLEBIT_P
                 !rb_absint_singlebit_p(bignum)
 #elif defined(HAVE_RB_BIG_AND)

Original file line number	Diff line number	Diff line change
`@@ -224,6 +224,7 @@ static int my_big2ll(VALUE bignum, LONG_LONG *ptr)`
`224`	`224`	`}`
`225`	`225`	`else {`
`226`	`226`	`if (len == 8 && nlz_bits == 0 &&`
	`227`	+ /* only -0x8000000000000000 is safe if `len == 8 && nlz_bits == 0` */
`227`	`228`	`#ifdef HAVE_RB_ABSINT_SINGLEBIT_P`
`228`	`229`	`!rb_absint_singlebit_p(bignum)`
`229`	`230`	`#elif defined(HAVE_RB_BIG_AND)`