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-rw-r--r--source/fitz/unzip.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/source/fitz/unzip.c b/source/fitz/unzip.c
index 8c7c1f61..355da552 100644
--- a/source/fitz/unzip.c
+++ b/source/fitz/unzip.c
@@ -2,6 +2,10 @@
#include <zlib.h>
+#if !defined (INT32_MAX)
+#define INT32_MAX 2147483647L
+#endif
+
#define ZIP_LOCAL_FILE_SIG 0x04034b50
#define ZIP_DATA_DESC_SIG 0x08074b50
#define ZIP_CENTRAL_DIRECTORY_SIG 0x02014b50