Add size for indexstoredb_symbol_role_t

This was previously miscompiling with clang (would be 32 bit instead of
64 bit) and now errors with clang 19. `1ull << 63` works fine on gcc and
clang, but is still 32 bit with MSVC which requires `: uint64_t`.

Note that this doesn't seem to have had any impact within indexstore-db
itself - the C++ side is using a different enum (`SymbolRole`) which
has:
```
Canonical = uint64_t(1) << 63,
```

And seems like the only real use of `Canonical` is
`foreachCanonicalSymbolOccurrenceImpl` itself (also C++).

Author: bnbarham

Sources/IndexStoreDB/SymbolRole.swift

@@ -42,9 +42,7 @@ public struct SymbolRole: OptionSet, Hashable, Sendable {
 
   // MARK: Additional IndexStoreDB index roles
 
-  // Note: the imported constant INDEXSTOREDB_SYMBOL_ROLE_CANONICAL is signed by default and
-  // fails to construct in Swift.
-  public static let canonical: SymbolRole = SymbolRole(rawValue: 1 << 63)
+  public static let canonical: SymbolRole = SymbolRole(rawValue: INDEXSTOREDB_SYMBOL_ROLE_CANONICAL)
 
   public static let all: SymbolRole = SymbolRole(rawValue: ~0)
 

include/CIndexStoreDB/CIndexStoreDB.h

@@ -59,7 +59,7 @@ typedef void *indexstoredb_symbol_location_t;
 typedef void *indexstoredb_symbol_relation_t;
 typedef void *indexstoredb_unit_info_t;
 
-typedef enum {
+typedef enum : uint64_t {
   INDEXSTOREDB_SYMBOL_ROLE_DECLARATION = 1 << 0,
   INDEXSTOREDB_SYMBOL_ROLE_DEFINITION  = 1 << 1,
   INDEXSTOREDB_SYMBOL_ROLE_REFERENCE   = 1 << 2,
@@ -82,7 +82,7 @@ typedef enum {
   INDEXSTOREDB_SYMBOL_ROLE_REL_IBTYPEOF    = 1 << 17,
   INDEXSTOREDB_SYMBOL_ROLE_REL_SPECIALIZATIONOF = 1 << 18,
 
-  INDEXSTOREDB_SYMBOL_ROLE_CANONICAL = 1 << 63,
+  INDEXSTOREDB_SYMBOL_ROLE_CANONICAL = uint64_t(1) << 63,
 } indexstoredb_symbol_role_t;
 
 typedef enum {