ztest.c: #include <errno.h>.

	* ztest.c: #include <errno.h>.
	(TEST_TIMING): Don't define, don't test.
	(xclock_gettime, xclockid_t): Define if !HAVE_CLOCK_GETTIME.
	(clockid_t, clock_gettime, CLOCK_REALTIME): Likewise.
	(ZLIB_CLOCK_GETTIME_ARG): Define.
	* configure.ac: Change clock_gettime_link to CLOCK_GETTIME_LINK.
	* Makefile.am: Likewise.
	* configure, Makefile.in: Rebuild.

From-SVN: r253377

libbacktrace/ChangeLog

+2017-10-02  Ian Lance Taylor  <iant@golang.org>
+
+	* ztest.c: #include <errno.h>.
+	(TEST_TIMING): Don't define, don't test.
+	(xclock_gettime, xclockid_t): Define if !HAVE_CLOCK_GETTIME.
+	(clockid_t, clock_gettime, CLOCK_REALTIME): Likewise.
+	(ZLIB_CLOCK_GETTIME_ARG): Define.
+	* configure.ac: Change clock_gettime_link to CLOCK_GETTIME_LINK.
+	* Makefile.am: Likewise.
+	* configure, Makefile.in: Rebuild.
+
 2017-10-02  Thomas Schwinge  <thomas@codesourcery.com>
 
 	PR other/67165

libbacktrace/Makefile.am

@@ -108,7 +108,7 @@ ztest_LDADD = libbacktrace.la
 if HAVE_ZLIB
 ztest_LDADD += -lz
 endif
-ztest_LDADD += $(clock_gettime_link)
+ztest_LDADD += $(CLOCK_GETTIME_LINK)
 
 check_PROGRAMS += ztest
 

libbacktrace/Makefile.in

@@ -215,6 +215,7 @@ BACKTRACE_SUPPORTS_THREADS = @BACKTRACE_SUPPORTS_THREADS@
 BACKTRACE_USES_MALLOC = @BACKTRACE_USES_MALLOC@
 CC = @CC@
 CFLAGS = @CFLAGS@
+CLOCK_GETTIME_LINK = @CLOCK_GETTIME_LINK@
 CPP = @CPP@
 CPPFLAGS = @CPPFLAGS@
 CYGPATH_W = @CYGPATH_W@
@@ -287,7 +288,6 @@ build_cpu = @build_cpu@
 build_os = @build_os@
 build_vendor = @build_vendor@
 builddir = @builddir@
-clock_gettime_link = @clock_gettime_link@
 datadir = @datadir@
 datarootdir = @datarootdir@
 docdir = @docdir@
@@ -385,7 +385,7 @@ TESTS = $(check_PROGRAMS) $(am__append_4)
 @NATIVE_TRUE@ztest_SOURCES = ztest.c testlib.c
 @NATIVE_TRUE@ztest_CFLAGS = -DSRCDIR=\"$(srcdir)\"
 @NATIVE_TRUE@ztest_LDADD = libbacktrace.la $(am__append_2) \
-@NATIVE_TRUE@	$(clock_gettime_link)
+@NATIVE_TRUE@	$(CLOCK_GETTIME_LINK)
 @NATIVE_TRUE@edtest_SOURCES = edtest.c edtest2_build.c testlib.c
 @NATIVE_TRUE@edtest_LDADD = libbacktrace.la
 @HAVE_PTHREAD_TRUE@@NATIVE_TRUE@ttest_SOURCES = ttest.c testlib.c

libbacktrace/configure

@@ -614,7 +614,7 @@ HAVE_ZLIB_TRUE
 HAVE_PTHREAD_FALSE
 HAVE_PTHREAD_TRUE
 PTHREAD_CFLAGS
-clock_gettime_link
+CLOCK_GETTIME_LINK
 BACKTRACE_USES_MALLOC
 ALLOC_FILE
 VIEW_FILE
@@ -12803,7 +12803,7 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_rt_clock_gettime" >&5
 $as_echo "$ac_cv_lib_rt_clock_gettime" >&6; }
 if test "x$ac_cv_lib_rt_clock_gettime" = x""yes; then :
-  clock_gettime_link=-lrt
+  CLOCK_GETTIME_LINK=-lrt
 
 $as_echo "#define HAVE_CLOCK_GETTIME 1" >>confdefs.h
 

libbacktrace/configure.ac

@@ -397,11 +397,11 @@ clock_gettime_link=
 # we're using this for test timing only.
 if test "$ac_cv_func_clock_gettime" = no; then
   AC_CHECK_LIB(rt, clock_gettime,
-    [clock_gettime_link=-lrt
+    [CLOCK_GETTIME_LINK=-lrt
      AC_DEFINE(HAVE_CLOCK_GETTIME, 1,
 	       [Define to 1 if you have the `clock_gettime' function.])])
 fi
-AC_SUBST(clock_gettime_link)
+AC_SUBST(CLOCK_GETTIME_LINK)
 
 dnl Test whether the compiler supports the -pthread option.
 AC_CACHE_CHECK([whether -pthread is supported],

libbacktrace/ztest.c

@@ -32,6 +32,7 @@ POSSIBILITY OF SUCH DAMAGE.  */
 
 #include "config.h"
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -43,16 +44,37 @@ POSSIBILITY OF SUCH DAMAGE.  */
 #include <zlib.h>
 #endif
 
-#ifdef HAVE_CLOCK_GETTIME
-# define TEST_TIMING
-#endif
-
 #include "backtrace.h"
 #include "backtrace-supported.h"
 
 #include "internal.h"
 #include "testlib.h"
 
+#ifndef HAVE_CLOCK_GETTIME
+
+typedef int xclockid_t;
+
+static int
+xclock_gettime (xclockid_t id ATTRIBUTE_UNUSED,
+		struct timespec *ts ATTRIBUTE_UNUSED)
+{
+  errno = EINVAL;
+  return -1;
+}
+
+#define clockid_t xclockid_t
+#define clock_gettime xclock_gettime
+#undef CLOCK_REALTIME
+#define CLOCK_REALTIME 0
+
+#endif /* !defined(HAVE_CLOCK_GETTIME) */
+
+#ifdef CLOCK_PROCESS_CPUTIME_ID
+#define ZLIB_CLOCK_GETTIME_ARG CLOCK_PROCESS_CPUTIME_ID
+#else
+#define ZLIB_CLOCK_GETTIME_ARG CLOCK_REALTIME
+#endif
+
 /* Some tests for the local zlib inflation code.  */
 
 struct zlib_test
@@ -161,7 +183,7 @@ test_samples (struct backtrace_state *state)
     }
 }
 
-#if defined HAVE_ZLIB && defined TEST_TIMING
+#ifdef HAVE_ZLIB
 
 /* Given a set of TRIALS timings, discard the lowest and highest
    values and return the mean average of the rest.  */
@@ -220,7 +242,6 @@ test_large (struct backtrace_state *state)
   unsigned char *uncompressed_buf;
   size_t uncompressed_bufsize;
   int r;
-# ifdef TEST_TIMING
   clockid_t cid;
   struct timespec ts1;
   struct timespec ts2;
@@ -229,7 +250,6 @@ test_large (struct backtrace_state *state)
   const size_t trials = 16;
   size_t ctimes[16];
   size_t ztimes[16];
-# endif /* TEST_TIMING */
   static const char * const names[] = {
     "Mark.Twain-Tom.Sawyer.txt",
     "../libgo/go/compress/testdata/Mark.Twain-Tom.Sawyer.txt"
@@ -347,16 +367,13 @@ test_large (struct backtrace_state *state)
 
   printf ("PASS: inflate large\n");
 
-# ifdef TEST_TIMING
-
   for (i = 0; i < trials; ++i)
     {
-      cid = CLOCK_REALTIME;
-#ifdef CLOCK_PROCESS_CPUTIME_ID
-      cid = CLOCK_PROCESS_CPUTIME_ID;
-#endif
+      cid = ZLIB_CLOCK_GETTIME_ARG;
       if (clock_gettime (cid, &ts1) < 0)
 	{
+	  if (errno == EINVAL)
+	    return;
 	  perror ("clock_gettime");
 	  return;
 	}
@@ -419,8 +436,6 @@ test_large (struct backtrace_state *state)
   printf ("zlib time:    : %zu ns\n", ztime);
   printf ("percentage    : %g\n", (double) ztime / (double) ctime);
 
-# endif /* TEST_TIMING */
-
   return;
 
  fail: