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Add back gz_intmax for zlib compatibility when linking statically
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5
gzguts.h
5
gzguts.h
@ -135,11 +135,12 @@ typedef gz_state *gz_statep;
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/* shared functions */
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void Z_INTERNAL gz_error(gz_state *, int, const char *);
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#ifdef ZLIB_COMPAT
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unsigned Z_INTERNAL gz_intmax(void);
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#endif
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/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
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value -- needed when comparing unsigned to z_off64_t, which is signed
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(possible z_off64_t types off_t, off64_t, and long are all signed) */
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unsigned Z_INTERNAL gz_intmax(void);
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#define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
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#endif /* GZGUTS_H_ */
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16
gzlib.c
16
gzlib.c
@ -524,20 +524,8 @@ void Z_INTERNAL gz_error(gz_state *state, int err, const char *msg) {
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(void)snprintf(state->msg, strlen(state->path) + strlen(msg) + 3, "%s%s%s", state->path, ": ", msg);
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}
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/* portably return maximum value for an int (when limits.h presumed not
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available) -- we need to do this to cover cases where 2's complement not
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used, since C standard permits 1's complement and sign-bit representations,
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otherwise we could just use ((unsigned)-1) >> 1 */
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#ifdef ZLIB_COMPAT
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unsigned Z_INTERNAL gz_intmax(void) {
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#ifdef INT_MAX
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return INT_MAX;
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#else
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unsigned p = 1, q;
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do {
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q = p;
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p <<= 1;
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p++;
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} while (p > q);
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return q >> 1;
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#endif
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}
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#endif
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