[PATCH] compat: support pre-1.2 zlib

Older zlib's don't have deflateBound()
20 years ago · 9da3acfb19
1 changed files with 4 additions and 0 deletions
--- a/cache.h
+++ b/cache.h
@ -17,6 +17,10 @@
				@@ -17,6 +17,10 @@
 #include SHA1_HEADER
 #include <zlib.h>

+#if ZLIB_VERNUM < 0x1200
+#define deflateBound(c,s)  ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11)
+#endif
+
 /*
 * Basic data structures for the directory cache
 *