use cBOOL for bool casts

bool b = (bool)some_int

doesn't necessarily do what you think. In some builds, bool is defined as
char, and that cast's behaviour is thus undefined. So this line in mg.c:

    const bool was_temp = (bool)SvTEMP(sv);

was actually setting was_temp to false even when the SVs_TEMP flag was set.
Fix this by replacing all the (bool) casts with a new cBOOL() cast macro
that (hopefully) does the right thing.

1 files changed, 1 insertions, 1 deletions

diff --git a/pp.c b/pp.c
index 9565c6c473..2c5f69a6c8 100644
--- a/pp.c
+++ b/pp.c
@@ -1030,7 +1030,7 @@ PP(pp_pow)
 			   on same algorithm as above */
 			register UV result = 1;
 			register UV base = baseuv;
-			const bool odd_power = (bool)(power & 1);
+			const bool odd_power = cBOOL(power & 1);
 			if (odd_power) {
 			    result *= base;
 			}