[src/trunk]: src/tests/lib/libexecinfo Make the output of the test case bette...

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/6b1ff8a15c8b
branches:  trunk
changeset: 325928:6b1ff8a15c8b
user:      martin <martin%NetBSD.org@localhost>
date:      Sat Jan 11 19:13:41 2014 +0000

description:
Make the output of the test case better suited for debugging (output full
backtrace before failing any unclear asserts)

diffstat:

 tests/lib/libexecinfo/t_backtrace.c |  18 +++++++++++++-----
 1 files changed, 13 insertions(+), 5 deletions(-)

diffs (46 lines):

diff -r e740b72d1c5f -r 6b1ff8a15c8b tests/lib/libexecinfo/t_backtrace.c
--- a/tests/lib/libexecinfo/t_backtrace.c       Sat Jan 11 18:38:00 2014 +0000
+++ b/tests/lib/libexecinfo/t_backtrace.c       Sat Jan 11 19:13:41 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: t_backtrace.c,v 1.10 2013/08/16 11:57:15 martin Exp $  */
+/*     $NetBSD: t_backtrace.c,v 1.11 2014/01/11 19:13:41 martin Exp $  */
 
 /*-
  * Copyright (c) 2012 The NetBSD Foundation, Inc.
@@ -29,11 +29,12 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_backtrace.c,v 1.10 2013/08/16 11:57:15 martin Exp $");
+__RCSID("$NetBSD: t_backtrace.c,v 1.11 2014/01/11 19:13:41 martin Exp $");
 
 #include <atf-c.h>
 #include <atf-c/config.h>
 #include <string.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <execinfo.h>
 #include <unistd.h>
@@ -69,12 +70,19 @@
                ++max_frames;
        }
        nptrs = backtrace(buffer, __arraycount(buffer));
-       ATF_REQUIRE(nptrs >= ncalls + 2 + min_frames);
-       ATF_REQUIRE(nptrs <= ncalls + 2 + max_frames);
-
        strings = backtrace_symbols_fmt(buffer, nptrs, "%n");
 
        ATF_CHECK(strings != NULL);
+
+       printf("got nptrs=%zu ncalls=%zu (min_frames: %zu, max_frames: %zu)\n",
+           nptrs, ncalls, min_frames, max_frames);
+       printf("backtrace is:\n");
+       for (j = 0; j < nptrs; j++) {
+               printf("#%zu: %s\n", j, strings[j]);
+       }
+
+       ATF_REQUIRE(nptrs >= ncalls + 2 + min_frames);
+       ATF_REQUIRE(nptrs <= ncalls + 2 + max_frames);
        ATF_CHECK_STREQ(strings[0], "myfunc3");
        ATF_CHECK_STREQ(strings[1], "myfunc2");