+/* When set, ggc_collect will do collection. */
+extern bool ggc_force_collect;
+
+/* When true, identifier nodes are considered as GC roots. When
+ false, identifier nodes are treated like any other GC-allocated
+ object, and the identifier hash table is treated as a weak
+ hash. */
+extern bool ggc_protect_identifiers;
+
+/* The internal primitive. */
+extern void *ggc_alloc_stat (size_t MEM_STAT_DECL);
+#define ggc_alloc(s) ggc_alloc_stat (s MEM_STAT_INFO)
+/* Allocate an object of the specified type and size. */
+extern void *ggc_alloc_typed_stat (enum gt_types_enum, size_t MEM_STAT_DECL);
+#define ggc_alloc_typed(s,z) ggc_alloc_typed_stat (s,z MEM_STAT_INFO)
+/* Like ggc_alloc, but allocates cleared memory. */
+extern void *ggc_alloc_cleared_stat (size_t MEM_STAT_DECL);
+#define ggc_alloc_cleared(s) ggc_alloc_cleared_stat (s MEM_STAT_INFO)
+/* Resize a block. */
+extern void *ggc_realloc_stat (void *, size_t MEM_STAT_DECL);
+#define ggc_realloc(s,z) ggc_realloc_stat (s,z MEM_STAT_INFO)
+/* Like ggc_alloc_cleared, but performs a multiplication. */
+extern void *ggc_calloc (size_t, size_t);
+/* Free a block. To be used when known for certain it's not reachable. */
+extern void ggc_free (void *);
+
+extern void ggc_record_overhead (size_t, size_t, void * MEM_STAT_DECL);
+extern void ggc_free_overhead (void *);
+extern void ggc_prune_overhead_list (void);
+
+extern void dump_ggc_loc_statistics (bool);
+
+/* Type-safe, C++-friendly versions of ggc_alloc() and gcc_calloc(). */
+#define GGC_NEW(T) ((T *) ggc_alloc (sizeof (T)))
+#define GGC_CNEW(T) ((T *) ggc_alloc_cleared (sizeof (T)))
+#define GGC_NEWVEC(T, N) ((T *) ggc_alloc ((N) * sizeof(T)))
+#define GGC_CNEWVEC(T, N) ((T *) ggc_alloc_cleared ((N) * sizeof(T)))
+#define GGC_RESIZEVEC(T, P, N) ((T *) ggc_realloc ((P), (N) * sizeof (T)))
+#define GGC_NEWVAR(T, S) ((T *) ggc_alloc ((S)))
+#define GGC_CNEWVAR(T, S) ((T *) ggc_alloc_cleared ((S)))
+#define GGC_RESIZEVAR(T, P, N) ((T *) ggc_realloc ((P), (N)))
+
+#define ggc_alloc_rtvec(NELT) \
+ ((rtvec) ggc_alloc_zone (sizeof (struct rtvec_def) + ((NELT) - 1) \
+ * sizeof (rtx), &rtl_zone))
+
+#define ggc_alloc_tree(LENGTH) ((tree) ggc_alloc_zone (LENGTH, &tree_zone))
+
+#define htab_create_ggc(SIZE, HASH, EQ, DEL) \
+ htab_create_alloc (SIZE, HASH, EQ, DEL, ggc_calloc, NULL)
+
+#define splay_tree_new_ggc(COMPARE) \
+ splay_tree_new_with_allocator (COMPARE, NULL, NULL, \
+ &ggc_splay_alloc, &ggc_splay_dont_free, \
+ NULL)
+extern void *ggc_splay_alloc (int, void *);
+extern void ggc_splay_dont_free (void *, void *);
+
+/* Allocate a gc-able string, and fill it with LENGTH bytes from CONTENTS.
+ If LENGTH is -1, then CONTENTS is assumed to be a
+ null-terminated string and the memory sized accordingly. */
+extern const char *ggc_alloc_string (const char *contents, int length);
+
+/* Make a copy of S, in GC-able memory. */
+#define ggc_strdup(S) ggc_alloc_string((S), -1)
+
+/* Invoke the collector. Garbage collection occurs only when this
+ function is called, not during allocations. */
+extern void ggc_collect (void);
+
+/* Return the number of bytes allocated at the indicated address. */
+extern size_t ggc_get_size (const void *);