Conf: Fix symbol lookup

The symbol table used just symbol name as a key, and used a trick with
active flag to find symbols in active scopes with one hash table lookup.

The disadvantage is that it can degenerate to O(n) for negative queries
in situations where are many symbols with the same name in different
scopes.

Thanks to Yanko Kaneti for the bugreport.

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/hash.h b/lib/hash.h
index 8febb33f..b30f7830 100644
--- a/lib/hash.h
+++ b/lib/hash.h
@@ -237,7 +237,7 @@ mem_hash(const void *p, uint s)
 }
 
 static inline uint
-ptr_hash(void *ptr)
+ptr_hash(const void *ptr)
 {
   uintptr_t p = (uintptr_t) ptr;
   return p ^ (p << 8) ^ (p >> 16);