libc/time: Move internal newlib tz-structs into own header

As discussed in GCC bug 97088
(https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97088), parameters in
prototypes of library functions should use reserved names, or no name
at all.

This patch moves the internal struct __tzrule_struct to its own
internal header sys/_tz_structs.h.  This is included from newlib's
time code as well as from Cygwin's localtime wrapper.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@st.com>
Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

2 files changed, 24 insertions, 20 deletions

diff --git a/newlib/libc/include/sys/_tz_structs.h b/newlib/libc/include/sys/_tz_structs.h
new file mode 100644
index 0000000..9610b06
--- /dev/null
+++ b/newlib/libc/include/sys/_tz_structs.h
@@ -0,0 +1,24 @@
+#ifndef _SYS__TZ_STRUCTS_H_
+#define _SYS__TZ_STRUCTS_H_
+
+typedef struct __tzrule_struct
+{
+  char ch;
+  int m; /* Month of year if ch=M */
+  int n; /* Week of month if ch=M */
+  int d; /* Day of week if ch=M, day of year if ch=J or ch=D */
+  int s; /* Time of day in seconds */
+  time_t change;
+  long offset; /* Match type of _timezone. */
+} __tzrule_type;
+
+typedef struct __tzinfo_struct
+{
+  int __tznorth;
+  int __tzyear;
+  __tzrule_type __tzrule[2];
+} __tzinfo_type;
+
+__tzinfo_type *__gettzinfo (void);
+
+#endif /* _SYS__TZ_STRUCTS_H_ */
diff --git a/newlib/libc/include/time.h b/newlib/libc/include/time.h
index 3031590..ed6cc70 100644
--- a/newlib/libc/include/time.h
+++ b/newlib/libc/include/time.h
@@ -102,26 +102,6 @@ void      tzset 	(void);
 #endif
 void      _tzset_r 	(struct _reent *);
 
-typedef struct __tzrule_struct
-{
-  char ch;
-  int m;
-  int n;
-  int d;
-  int s;
-  time_t change;
-  long offset; /* Match type of _timezone. */
-} __tzrule_type;
-
-typedef struct __tzinfo_struct
-{
-  int __tznorth;
-  int __tzyear;
-  __tzrule_type __tzrule[2];
-} __tzinfo_type;
-
-__tzinfo_type *__gettzinfo (void);
-
 /* getdate functions */
 
 #ifdef HAVE_GETDATE