'bad_type' is used for ... bad types instead of NULL
in order to avoid later lots of null-checking.
Alas NULL is also often used and so we have to check
for NULL and 'bad_ctype' when checking a type's validity.
Add an helper: valid_type() to make the code a bit simpler.
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@xxxxxxxxx>
---
symbol.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/symbol.h b/symbol.h
index fd5746429..b4d1c2acc 100644
--- a/symbol.h
+++ b/symbol.h
@@ -309,6 +309,11 @@ extern void debug_symbol(struct symbol *);
extern void merge_type(struct symbol *sym, struct symbol *base_type);
extern void check_declaration(struct symbol *sym);
+static inline int valid_type(const struct symbol *ctype)
+{
+ return ctype && ctype != &bad_ctype;
+}
+
static inline struct symbol *get_base_type(const struct symbol *sym)
{
return examine_symbol_type(sym->ctype.base_type);
--
2.16.0
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