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-rw-r--r--typecheck.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/typecheck.c b/typecheck.c
index ea3cd3af..7f655606 100644
--- a/typecheck.c
+++ b/typecheck.c
@@ -1027,6 +1027,9 @@ type_t *get_type(env_t *env, ast_t *ast)
case BINOP_AND: {
if (lhs_t->tag == BoolType && rhs_t->tag == BoolType) {
return lhs_t;
+ } else if ((lhs_t->tag == BoolType && rhs_t->tag == OptionalType) ||
+ (lhs_t->tag == OptionalType && rhs_t->tag == BoolType)) {
+ return Type(BoolType);
} else if (lhs_t->tag == BoolType && (rhs_t->tag == AbortType || rhs_t->tag == ReturnType)) {
return lhs_t;
} else if (rhs_t->tag == AbortType || rhs_t->tag == ReturnType) {
@@ -1048,6 +1051,9 @@ type_t *get_type(env_t *env, ast_t *ast)
case BINOP_OR: {
if (lhs_t->tag == BoolType && rhs_t->tag == BoolType) {
return lhs_t;
+ } else if ((lhs_t->tag == BoolType && rhs_t->tag == OptionalType) ||
+ (lhs_t->tag == OptionalType && rhs_t->tag == BoolType)) {
+ return Type(BoolType);
} else if (lhs_t->tag == BoolType && (rhs_t->tag == AbortType || rhs_t->tag == ReturnType)) {
return lhs_t;
} else if ((is_int_type(lhs_t) && is_int_type(rhs_t))
@@ -1075,6 +1081,9 @@ type_t *get_type(env_t *env, ast_t *ast)
case BINOP_XOR: {
if (lhs_t->tag == BoolType && rhs_t->tag == BoolType) {
return lhs_t;
+ } else if ((lhs_t->tag == BoolType && rhs_t->tag == OptionalType) ||
+ (lhs_t->tag == OptionalType && rhs_t->tag == BoolType)) {
+ return Type(BoolType);
} else if ((is_int_type(lhs_t) && is_int_type(rhs_t))
|| (lhs_t->tag == ByteType && rhs_t->tag == ByteType)) {
return get_math_type(env, ast, lhs_t, rhs_t);