ewah: convert to REALLOC_ARRAY, etc

Now that we're built around xmalloc and friends, we can use
helpers like REALLOC_ARRAY, ALLOC_GROW, and so on to make
the code shorter and protect against integer overflow.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/ewah/ewah_io.c b/ewah/ewah_io.c
index 4acff97d11..61f6a43579 100644
--- a/ewah/ewah_io.c
+++ b/ewah/ewah_io.c
@@ -134,8 +134,7 @@ int ewah_read_mmap(struct ewah_bitmap *self, const void *map, size_t len)
 	self->buffer_size = self->alloc_size = get_be32(ptr);
 	ptr += sizeof(uint32_t);
 
-	self->buffer = xrealloc(self->buffer,
-		self->alloc_size * sizeof(eword_t));
+	REALLOC_ARRAY(self->buffer, self->alloc_size);
 
 	/*
 	 * Copy the raw data for the bitmap as a whole chunk;
@@ -177,8 +176,7 @@ int ewah_deserialize(struct ewah_bitmap *self, int fd)
 		return -1;
 
 	self->buffer_size = self->alloc_size = (size_t)ntohl(word_count);
-	self->buffer = xrealloc(self->buffer,
-		self->alloc_size * sizeof(eword_t));
+	REALLOC_ARRAY(self->buffer, self->alloc_size);
 
 	/** 64 bit x N -- compressed words */
 	buffer = self->buffer;