Re-order the terms of an expression in arena_run_reg_dalloc() to correctly

detect whether the integer division table is large enough to handle the
divisor.  Before this change, the last two table elements were never used,
thus causing the slow path to be used for those divisors.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c
index 21504a1..9d0d3b3 100644
--- a/lib/libc/stdlib/malloc.c
+++ b/lib/libc/stdlib/malloc.c
@@ -2209,8 +2209,8 @@ arena_run_reg_dalloc(arena_run_t *run, arena_bin_t *bin, void *ptr, size_t size)
 			 */
 			regind = diff / size;
 		}
-	} else if (size <= ((sizeof(size_invs) / sizeof(unsigned))
-	    << QUANTUM_2POW_MIN) + 2) {
+	} else if (size <= (((sizeof(size_invs) / sizeof(unsigned)) + 2)
+	    << QUANTUM_2POW_MIN)) {
 		regind = size_invs[(size >> QUANTUM_2POW_MIN) - 3] * diff;
 		regind >>= SIZE_INV_SHIFT;
 	} else {