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[mandoc.git] / compat_ohash.c

diff --git a/compat_ohash.c b/compat_ohash.c
index 33c57afcb06be90c9d5ecda02bbe8b20936e2481..cbd6052182f21cd1ceffa3bb48e11abb7db2738c 100644 (file)
--- a/compat_ohash.c
+++ b/compat_ohash.c
@@ -1,8 +1,6 @@
-#ifdef HAVE_CONFIG_H
 #include "config.h"
-#endif
 
-#ifdef HAVE_OHASH
+#if HAVE_OHASH
 
 int dummy;
 
@@ -25,10 +23,13 @@ int dummy;
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include <sys/types.h>
+
 #include <stddef.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
+#include <limits.h>
 #include "compat_ohash.h"
 
 struct _ohash_record {
@@ -69,8 +70,7 @@ ohash_create_entry(struct ohash_info *i, const char *start, const char **end)
 void
 ohash_delete(struct ohash *h)
 {
-       (h->info.hfree)(h->t, sizeof(struct _ohash_record) * h->size,
-               h->info.data);
+       (h->info.free)(h->t, h->info.data);
 #ifndef NDEBUG
        h->t = NULL;
 #endif
@@ -80,13 +80,17 @@ static void
 ohash_resize(struct ohash *h)
 {
        struct _ohash_record *n;
-       unsigned int    ns, j;
+       size_t ns;
+       unsigned int    j;
        unsigned int    i, incr;
 
-       if (4 * h->deleted < h->total)
-               ns = h->size << 1;
-       else if (3 * h->deleted > 2 * h->total)
-               ns = h->size >> 1;
+       if (4 * h->deleted < h->total) {
+               if (h->size >= (UINT_MAX >> 1U))
+                       ns = UINT_MAX;
+               else
+                       ns = h->size << 1U;
+       } else if (3 * h->deleted > 2 * h->total)
+               ns = h->size >> 1U;
        else
                ns = h->size;
        if (ns < MINSIZE)
@@ -95,7 +99,8 @@ ohash_resize(struct ohash *h)
        STAT_HASH_EXPAND++;
        STAT_HASH_SIZE += ns - h->size;
 #endif
-       n = (h->info.halloc)(sizeof(struct _ohash_record) * ns, h->info.data);
+
+       n = (h->info.calloc)(ns, sizeof(struct _ohash_record), h->info.data);
        if (!n)
                return;
 
@@ -112,8 +117,7 @@ ohash_resize(struct ohash *h)
                        n[i].p = h->t[j].p;
                }
        }
-       (h->info.hfree)(h->t, sizeof(struct _ohash_record) * h->size, 
-               h->info.data);
+       (h->info.free)(h->t, h->info.data);
        h->t = n;
        h->size = ns;
        h->total -= h->deleted;
@@ -199,12 +203,12 @@ ohash_init(struct ohash *h, unsigned int size, struct ohash_info *info)
 #endif
        /* Copy info so that caller may free it.  */
        h->info.key_offset = info->key_offset;
-       h->info.halloc = info->halloc;
-       h->info.hfree = info->hfree;
+       h->info.calloc = info->calloc;
+       h->info.free = info->free;
        h->info.alloc = info->alloc;
        h->info.data = info->data;
-       h->t = (h->info.halloc)(sizeof(struct _ohash_record) * h->size,
-           h->info.data);
+       h->t = (h->info.calloc)(h->size, sizeof(struct _ohash_record),
+                   h->info.data);
        h->total = h->deleted = 0;
 }