[PATCH 06/20] c2xml: Use an unsigned shift in examine_modifiers()

[Bart Van Assche <bvanassche@acm.org>]

Replace the signed integer shift expression 1 << i with (1UL << i) in
examine_modifiers() when testing bits in sym->ctype.modifiers across
indices 0 through 31.

Avoid shifting a signed 32-bit int value into its sign bit when i is 31,
eliminating undefined signed left-shift behavior in C and matching the
unsigned long type of sym->ctype.modifiers.

Fixes: f744a1419d92 ("add c2xml program")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 c2xml.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/c2xml.c b/c2xml.c
index 1a24c3a8120a..519769f72a71 100644
--- a/c2xml.c
+++ b/c2xml.c
@@ -149,7 +149,7 @@ static void examine_modifiers(struct symbol *sym, xmlNodePtr node)
 
 	/*iterate over the 32 bit bitfield*/
 	for (i=0; i < 32; i++) {
-		if ((sym->ctype.modifiers & 1<<i) && modifiers[i])
+		if ((sym->ctype.modifiers & (1UL << i)) && modifiers[i])
 			newProp(node, modifiers[i], "1");
 	}
 }