2 files changed, 8 insertions, 1 deletions
diff --git a/cc.h b/cc.h
index 83c3afa..bc37221 100644
--- a/cc.h
+++ b/cc.h
@@ -440,6 +440,7 @@ extern struct scope filescope;
 
 struct expr *expr(struct scope *);
 struct expr *assignexpr(struct scope *);
+struct expr *constexpr(struct scope *);
 uint64_t intconstexpr(struct scope *, _Bool);
 void delexpr(struct expr *);
 
diff --git a/expr.c b/expr.c
index 099c3e8..a824873 100644
--- a/expr.c
+++ b/expr.c
@@ -820,12 +820,18 @@ condexpr(struct scope *s)
 	return e;
 }
 
+struct expr *
+constexpr(struct scope *s)
+{
+	return eval(condexpr(s));
+}
+
 uint64_t
 intconstexpr(struct scope *s, bool allowneg)
 {
 	struct expr *e;
 
-	e = eval(condexpr(s));
+	e = constexpr(s);
 	if (e->kind != EXPRCONST || !(typeprop(e->type) & PROPINT))
 		error(&tok.loc, "not an integer constant expression");
 	if (!allowneg && e->type->basic.issigned && e->constant.i > INT64_MAX)