Use INT_MAX directly

gz_intmax() is just a wrapper around INT_MAX.  Use the real thing.

Signed-off-by: Alejandro Colomar <[email protected]>

gzguts.h

@@ -203,5 +203,4 @@ char ZLIB_INTERNAL *gz_strwinerror(DWORD error);
 /* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
    value -- needed when comparing unsigned to z_off64_t, which is signed
    (possible z_off64_t types off_t, off64_t, and long are all signed) */
-unsigned ZLIB_INTERNAL gz_intmax(void);
-#define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
+#define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)

gzlib.c

@@ -565,11 +565,3 @@ void ZLIB_INTERNAL gz_error(gz_statep state, int err, const char *msg) {
     strcat(state->msg, msg);
 #endif
 }
-
-/* portably return maximum value for an int (when limits.h presumed not
-   available) -- we need to do this to cover cases where 2's complement not
-   used, since C standard permits 1's complement and sign-bit representations,
-   otherwise we could just use ((unsigned)-1) >> 1 */
-unsigned ZLIB_INTERNAL gz_intmax(void) {
-    return INT_MAX;
-}

zconf.h

@@ -64,7 +64,6 @@
 #  define get_crc_table         z_get_crc_table
 #  ifndef Z_SOLO
 #    define gz_error              z_gz_error
-#    define gz_intmax             z_gz_intmax
 #    define gz_strwinerror        z_gz_strwinerror
 #    define gzbuffer              z_gzbuffer
 #    define gzclearerr            z_gzclearerr

zconf.h.cmakein

@@ -66,7 +66,6 @@
 #  define get_crc_table         z_get_crc_table
 #  ifndef Z_SOLO
 #    define gz_error              z_gz_error
-#    define gz_intmax             z_gz_intmax
 #    define gz_strwinerror        z_gz_strwinerror
 #    define gzbuffer              z_gzbuffer
 #    define gzclearerr            z_gzclearerr

zconf.h.in

@@ -64,7 +64,6 @@
 #  define get_crc_table         z_get_crc_table
 #  ifndef Z_SOLO
 #    define gz_error              z_gz_error
-#    define gz_intmax             z_gz_intmax
 #    define gz_strwinerror        z_gz_strwinerror
 #    define gzbuffer              z_gzbuffer
 #    define gzclearerr            z_gzclearerr

zlib.map

@@ -15,7 +15,6 @@ ZLIB_1.2.0 {
     zcfree;
     z_errmsg;
     gz_error;
-    gz_intmax;
     _*;
 };