Use a uniform approach for the largest value of an unsigned type.

zlib-ng · Feb 7, 2017 · cd00715 · cd00715
1 parent a7edd5a
commit cd00715
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Showing 3 changed files with 3 additions and 3 deletions.
diff --git a/compress.c b/compress.c
@@ -23,7 +23,7 @@ int ZEXPORT compress2(unsigned char *dest, size_t *destLen, const unsigned char
                         size_t sourceLen, int level) {
     z_stream stream;
     int err;
-    const unsigned int max = (unsigned int)0 - 1;
+    const unsigned int max = (unsigned int)-1;
     size_t left;
 
     left = *destLen;

diff --git a/inflate.c b/inflate.c
@@ -1496,7 +1496,7 @@ long ZEXPORT inflateMark(z_stream *strm) {
 unsigned long ZEXPORT inflateCodesUsed(z_stream *strm) {
     struct inflate_state *state;
     if (strm == NULL || strm->state == NULL)
-        return (unsigned long)0 - 1;
+        return (unsigned long)-1;
     state = (struct inflate_state *)strm->state;
     return (unsigned long)(state->next - state->codes);
 }
diff --git a/uncompr.c b/uncompr.c
@@ -27,7 +27,7 @@
 int ZEXPORT uncompress2(unsigned char *dest, size_t *destLen, const unsigned char *source, size_t *sourceLen) {
     z_stream stream;
     int err;
-    const unsigned int max = (unsigned int)0 - 1;
+    const unsigned int max = (unsigned int)-1;
     size_t len, left;
     unsigned char buf[1];    /* for detection of incomplete stream when *destLen == 0 */