[zlib] Re-sync with zlib 1.2.12, patch 14 of N

Ported:
- Avoid adding empty gzip member after gzflush with Z_FINISH.
- Fix error in comment on the polynomial representation of a byte.
- Clarify gz* function interfaces, referring to parameter names.
- Change macro name in inflate.c to avoid collision in VxWorks.
- Replace black/white with allow/block. (theresa-m)
- Add fallthrough comments for gcc.

Bug: 1032721
Change-Id: Iddabef8450dca9dced3df58473a0ecb197796dc4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3611483
Reviewed-by: Noel Gordon <noel@chromium.org>
Reviewed-by: Chris Blume <cblume@chromium.org>
Commit-Queue: Adenilson Cavalcanti <cavalcantii@chromium.org>
Cr-Commit-Position: refs/heads/main@{#996983}
NOKEYCHECK=True
GitOrigin-RevId: c47a52f8f7950377f45f850cf66092a4a6033fa6

1 files changed, 9 insertions, 9 deletions

diff --git a/trees.c b/trees.c
index decaeb7..6896067 100644
--- a/trees.c
+++ b/trees.c
@@ -1091,9 +1091,9 @@ local void compress_block(s, ltree, dtree)
  * Check if the data type is TEXT or BINARY, using the following algorithm:
  * - TEXT if the two conditions below are satisfied:
  *    a) There are no non-portable control characters belonging to the
- *       "black list" (0..6, 14..25, 28..31).
+ *       "block list" (0..6, 14..25, 28..31).
  *    b) There is at least one printable character belonging to the
- *       "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
+ *       "allow list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
  * - BINARY otherwise.
  * - The following partially-portable control characters form a
  *   "gray list" that is ignored in this detection algorithm:
@@ -1103,19 +1103,19 @@ local void compress_block(s, ltree, dtree)
 local int detect_data_type(s)
     deflate_state *s;
 {
-    /* black_mask is the bit mask of black-listed bytes
+    /* block_mask is the bit mask of block-listed bytes
      * set bits 0..6, 14..25, and 28..31
      * 0xf3ffc07f = binary 11110011111111111100000001111111
      */
-    unsigned long black_mask = 0xf3ffc07fUL;
+    unsigned long block_mask = 0xf3ffc07fUL;
     int n;
 
-    /* Check for non-textual ("black-listed") bytes. */
-    for (n = 0; n <= 31; n++, black_mask >>= 1)
-        if ((black_mask & 1) && (s->dyn_ltree[n].Freq != 0))
+    /* Check for non-textual ("block-listed") bytes. */
+    for (n = 0; n <= 31; n++, block_mask >>= 1)
+        if ((block_mask & 1) && (s->dyn_ltree[n].Freq != 0))
             return Z_BINARY;
 
-    /* Check for textual ("white-listed") bytes. */
+    /* Check for textual ("allow-listed") bytes. */
     if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0
             || s->dyn_ltree[13].Freq != 0)
         return Z_TEXT;
@@ -1123,7 +1123,7 @@ local int detect_data_type(s)
         if (s->dyn_ltree[n].Freq != 0)
             return Z_TEXT;
 
-    /* There are no "black-listed" or "white-listed" bytes:
+    /* There are no "block-listed" or "allow-listed" bytes:
      * this stream either is empty or has tolerated ("gray-listed") bytes only.
      */
     return Z_BINARY;