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

[Corinna Vinschen <corinna@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=7ed952000c2e43f4297fe247f0331e50a14cd688

commit 7ed952000c2e43f4297fe247f0331e50a14cd688
Author: Torbjörn SVENSSON via Newlib <newlib@sourceware.org>
Date:   Mon Oct 5 14:50:13 2020 +0200

    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>

Diff:
---
 newlib/libc/include/sys/_tz_structs.h    | 24 ++++++++++++++++++++++++
 newlib/libc/include/time.h               | 20 --------------------
 newlib/libc/sys/linux/include/time.h     | 20 --------------------
 newlib/libc/sys/phoenix/include/time.h   | 17 -----------------
 newlib/libc/time/local.h                 |  1 +
 winsup/cygwin/tzcode/localtime_wrapper.c |  1 +
 6 files changed, 26 insertions(+), 57 deletions(-)

diff --git a/newlib/libc/include/sys/_tz_structs.h b/newlib/libc/include/sys/_tz_structs.h
new file mode 100644
index 000000000..9610b0681
--- /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 3031590b4..ed6cc70fe 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
diff --git a/newlib/libc/sys/linux/include/time.h b/newlib/libc/sys/linux/include/time.h
index 5e61d2b65..917a35858 100644
--- a/newlib/libc/sys/linux/include/time.h
+++ b/newlib/libc/sys/linux/include/time.h
@@ -84,26 +84,6 @@ char      *strptime (const char *, const char *, struct tm *);
 void      tzset 	(void);
 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 */
 
 #ifndef _REENT_ONLY
diff --git a/newlib/libc/sys/phoenix/include/time.h b/newlib/libc/sys/phoenix/include/time.h
index 3a9449c77..41fb137e4 100644
--- a/newlib/libc/sys/phoenix/include/time.h
+++ b/newlib/libc/sys/phoenix/include/time.h
@@ -40,23 +40,6 @@ extern char *_tzname[2];
 #define tzname	_tzname
 #endif
 
-typedef struct __tzrule_struct {
-	char ch;
-	int m;
-	int n;
-	int d;
-	int s;
-	time_t change;
-	long offset;
-} __tzrule_type;
-
-typedef struct __tzinfo_struct {
-	int __tznorth;
-	int __tzyear;
-	__tzrule_type __tzrule[2];
-} __tzinfo_type;
-
-__tzinfo_type *__gettzinfo();
 void tzset();
 
 clock_t clock();
diff --git a/newlib/libc/time/local.h b/newlib/libc/time/local.h
index dce51cda2..bfe06e622 100644
--- a/newlib/libc/time/local.h
+++ b/newlib/libc/time/local.h
@@ -1,6 +1,7 @@
 /* local header used by libc/time routines */
 #include <_ansi.h>
 #include <time.h>
+#include <sys/_tz_structs.h>
 
 #define SECSPERMIN	60L
 #define MINSPERHOUR	60L
diff --git a/winsup/cygwin/tzcode/localtime_wrapper.c b/winsup/cygwin/tzcode/localtime_wrapper.c
index 3ac8f8cb0..4e784480b 100644
--- a/winsup/cygwin/tzcode/localtime_wrapper.c
+++ b/winsup/cygwin/tzcode/localtime_wrapper.c
@@ -11,6 +11,7 @@ details. */
 #include "tz_posixrules.h"
 #include <cygwin/version.h>
 #include <stdlib.h>
+#include <sys/_tz_structs.h>
 
 static NO_COPY SRWLOCK tzset_guard = SRWLOCK_INIT;