Update libz to the HEAD of the develop branch

This mostly moves from K&R prototypes to ANSI prototypes and includes a
handful of bug fixes that are nice to have. The corresponding sys commit
will allow us to undo some hacks that jca applied to make the kernel build
with clang 15.

discussed with deraadt

1 files changed, 20 insertions, 77 deletions

diff --git a/lib/libz/gzlib.c b/lib/libz/gzlib.c
index 55da46a453f..2b446c448f0 100644
--- a/lib/libz/gzlib.c
+++ b/lib/libz/gzlib.c
@@ -15,10 +15,6 @@
 #endif
 #endif
 
-/* Local functions */
-local void gz_reset OF((gz_statep));
-local gzFile gz_open OF((const void *, int, const char *));
-
 #if defined UNDER_CE
 
 /* Map the Windows error number in ERROR to a locale-dependent error message
@@ -30,9 +26,7 @@ local gzFile gz_open OF((const void *, int, const char *));
 
    The gz_strwinerror function does not change the current setting of
    GetLastError. */
-char ZLIB_INTERNAL *gz_strwinerror(error)
-     DWORD error;
-{
+char ZLIB_INTERNAL *gz_strwinerror(DWORD error) {
     static char buf[1024];
 
     wchar_t *msgbuf;
@@ -72,9 +66,7 @@ char ZLIB_INTERNAL *gz_strwinerror(error)
 #endif /* UNDER_CE */
 
 /* Reset gzip file state */
-local void gz_reset(state)
-    gz_statep state;
-{
+local void gz_reset(gz_statep state) {
     state->x.have = 0;              /* no output data available */
     if (state->mode == GZ_READ) {   /* for reading ... */
         state->eof = 0;             /* not at end of file */
@@ -90,11 +82,7 @@ local void gz_reset(state)
 }
 
 /* Open a gzip file either by name or file descriptor. */
-local gzFile gz_open(path, fd, mode)
-    const void *path;
-    int fd;
-    const char *mode;
-{
+local gzFile gz_open(const void *path, int fd, const char *mode) {
     gz_statep state;
     z_size_t len;
     int oflag;
@@ -269,26 +257,17 @@ local gzFile gz_open(path, fd, mode)
 }
 
 /* -- see zlib.h -- */
-gzFile ZEXPORT gzopen(path, mode)
-    const char *path;
-    const char *mode;
-{
+gzFile ZEXPORT gzopen(const char *path, const char *mode) {
     return gz_open(path, -1, mode);
 }
 
 /* -- see zlib.h -- */
-gzFile ZEXPORT gzopen64(path, mode)
-    const char *path;
-    const char *mode;
-{
+gzFile ZEXPORT gzopen64(const char *path, const char *mode) {
     return gz_open(path, -1, mode);
 }
 
 /* -- see zlib.h -- */
-gzFile ZEXPORT gzdopen(fd, mode)
-    int fd;
-    const char *mode;
-{
+gzFile ZEXPORT gzdopen(int fd, const char *mode) {
     char *path;         /* identifier for error messages */
     gzFile gz;
 
@@ -306,19 +285,13 @@ gzFile ZEXPORT gzdopen(fd, mode)
 
 /* -- see zlib.h -- */
 #ifdef WIDECHAR
-gzFile ZEXPORT gzopen_w(path, mode)
-    const wchar_t *path;
-    const char *mode;
-{
+gzFile ZEXPORT gzopen_w(const wchar_t *path, const char *mode) {
     return gz_open(path, -2, mode);
 }
 #endif
 
 /* -- see zlib.h -- */
-int ZEXPORT gzbuffer(file, size)
-    gzFile file;
-    unsigned size;
-{
+int ZEXPORT gzbuffer(gzFile file, unsigned size) {
     gz_statep state;
 
     /* get internal structure and check integrity */
@@ -342,9 +315,7 @@ int ZEXPORT gzbuffer(file, size)
 }
 
 /* -- see zlib.h -- */
-int ZEXPORT gzrewind(file)
-    gzFile file;
-{
+int ZEXPORT gzrewind(gzFile file) {
     gz_statep state;
 
     /* get internal structure */
@@ -365,11 +336,7 @@ int ZEXPORT gzrewind(file)
 }
 
 /* -- see zlib.h -- */
-z_off64_t ZEXPORT gzseek64(file, offset, whence)
-    gzFile file;
-    z_off64_t offset;
-    int whence;
-{
+z_off64_t ZEXPORT gzseek64(gzFile file, z_off64_t offset, int whence) {
     unsigned n;
     z_off64_t ret;
     gz_statep state;
@@ -442,11 +409,7 @@ z_off64_t ZEXPORT gzseek64(file, offset, whence)
 }
 
 /* -- see zlib.h -- */
-z_off_t ZEXPORT gzseek(file, offset, whence)
-    gzFile file;
-    z_off_t offset;
-    int whence;
-{
+z_off_t ZEXPORT gzseek(gzFile file, z_off_t offset, int whence) {
     z_off64_t ret;
 
     ret = gzseek64(file, (z_off64_t)offset, whence);
@@ -454,9 +417,7 @@ z_off_t ZEXPORT gzseek(file, offset, whence)
 }
 
 /* -- see zlib.h -- */
-z_off64_t ZEXPORT gztell64(file)
-    gzFile file;
-{
+z_off64_t ZEXPORT gztell64(gzFile file) {
     gz_statep state;
 
     /* get internal structure and check integrity */
@@ -471,9 +432,7 @@ z_off64_t ZEXPORT gztell64(file)
 }
 
 /* -- see zlib.h -- */
-z_off_t ZEXPORT gztell(file)
-    gzFile file;
-{
+z_off_t ZEXPORT gztell(gzFile file) {
     z_off64_t ret;
 
     ret = gztell64(file);
@@ -481,9 +440,7 @@ z_off_t ZEXPORT gztell(file)
 }
 
 /* -- see zlib.h -- */
-z_off64_t ZEXPORT gzoffset64(file)
-    gzFile file;
-{
+z_off64_t ZEXPORT gzoffset64(gzFile file) {
     z_off64_t offset;
     gz_statep state;
 
@@ -504,9 +461,7 @@ z_off64_t ZEXPORT gzoffset64(file)
 }
 
 /* -- see zlib.h -- */
-z_off_t ZEXPORT gzoffset(file)
-    gzFile file;
-{
+z_off_t ZEXPORT gzoffset(gzFile file) {
     z_off64_t ret;
 
     ret = gzoffset64(file);
@@ -514,9 +469,7 @@ z_off_t ZEXPORT gzoffset(file)
 }
 
 /* -- see zlib.h -- */
-int ZEXPORT gzeof(file)
-    gzFile file;
-{
+int ZEXPORT gzeof(gzFile file) {
     gz_statep state;
 
     /* get internal structure and check integrity */
@@ -531,10 +484,7 @@ int ZEXPORT gzeof(file)
 }
 
 /* -- see zlib.h -- */
-const char * ZEXPORT gzerror(file, errnum)
-    gzFile file;
-    int *errnum;
-{
+const char * ZEXPORT gzerror(gzFile file, int *errnum) {
     gz_statep state;
 
     /* get internal structure and check integrity */
@@ -552,9 +502,7 @@ const char * ZEXPORT gzerror(file, errnum)
 }
 
 /* -- see zlib.h -- */
-void ZEXPORT gzclearerr(file)
-    gzFile file;
-{
+void ZEXPORT gzclearerr(gzFile file) {
     gz_statep state;
 
     /* get internal structure and check integrity */
@@ -578,11 +526,7 @@ void ZEXPORT gzclearerr(file)
    memory).  Simply save the error message as a static string.  If there is an
    allocation failure constructing the error message, then convert the error to
    out of memory. */
-void ZLIB_INTERNAL gz_error(state, err, msg)
-    gz_statep state;
-    int err;
-    const char *msg;
-{
+void ZLIB_INTERNAL gz_error(gz_statep state, int err, const char *msg) {
     /* free previously allocated message and clear */
     if (state->msg != NULL) {
         if (state->err != Z_MEM_ERROR)
@@ -624,8 +568,7 @@ void ZLIB_INTERNAL gz_error(state, err, msg)
    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()
-{
+unsigned ZLIB_INTERNAL gz_intmax(void) {
     unsigned p, q;
 
     p = 1;