X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;f=src%2Fdecompress_common.c;h=a490882d8542cd230877f6405ff34988ba98b322;hb=b982f17d9d036b7a0cac445c62983a30a0d16eb2;hp=49cd5ba0f083afa64248246080830fd93dfbb589;hpb=226a6dfe2909e054568298196785c944a1b5c4fa;p=wimlib

diff --git a/src/decompress_common.c b/src/decompress_common.c
index 49cd5ba0..a490882d 100644
--- a/src/decompress_common.c
+++ b/src/decompress_common.c
@@ -98,9 +98,11 @@
  *   binary tree.
  *
  * @decode_table:
- *	The array in which to create the decoding table.
- *	This must be 16-byte aligned and must have a length of at least
- *	((2**table_bits) + 2 * num_syms) entries.
+ *	The array in which to create the decoding table.  This must be
+ *	16-byte aligned and must have a length of at least
+ *	((2**table_bits) + 2 * num_syms) entries.  This is permitted to
+ *	alias @lens, since all information from @lens is consumed before
+*	anything is written to @decode_table.
  *
  * @num_syms:
  *	The number of symbols in the alphabet; also, the length of the
@@ -115,7 +117,9 @@
  *	An array of length @num_syms, indexable by symbol, that gives the
  *	length of the codeword, in bits, for that symbol.  The length can
  *	be 0, which means that the symbol does not have a codeword
- *	assigned.
+ *	assigned.  This is permitted to alias @decode_table, since all
+ *	information from @lens is consumed before anything is written to
+ *	@decode_table.
  *
  * @max_codeword_len:
  *	The longest codeword length allowed in the compression format.
@@ -126,10 +130,10 @@
  * code.
  */
 int
-make_huffman_decode_table(u16 decode_table[const restrict],
+make_huffman_decode_table(u16 decode_table[const],
 			  const unsigned num_syms,
 			  const unsigned table_bits,
-			  const u8 lens[const restrict],
+			  const u8 lens[const],
 			  const unsigned max_codeword_len)
 {
 	const unsigned table_num_entries = 1 << table_bits;
@@ -277,7 +281,7 @@ make_huffman_decode_table(u16 decode_table[const restrict],
 			aliased_word_t *p;
 			unsigned n;
 
-			BUILD_BUG_ON(WORDSIZE != 4 && WORDSIZE != 8);
+			STATIC_ASSERT(WORDSIZE == 4 || WORDSIZE == 8);
 
 			v = MAKE_DIRECT_ENTRY(sorted_syms[sym_idx], codeword_len);
 			v |= v << 16;