sparse: Allow override of sizeof(bool) warning

Allow an override to emit or not the sizeof(bool) warning.
Add a "-Wsizeof-bool" description to the manpage.

Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Christopher Li <sparse@chrisli.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/evaluate.c b/evaluate.c
index 66556150..a45f59ba 100644
--- a/evaluate.c
+++ b/evaluate.c
@@ -2057,7 +2057,8 @@ static struct symbol *evaluate_sizeof(struct expression *expr)
 	}
 
 	if (size == 1 && is_bool_type(type)) {
-		warning(expr->pos, "expression using sizeof bool");
+		if (Wsizeof_bool)
+			warning(expr->pos, "expression using sizeof bool");
 		size = bits_in_char;
 	}