tests: run-backtrace-demangle.sh check exitcode and max number of frames.

There can be more than 3 frames, but depending on the system/installed
glibc we might not be able to unwind fully till the end.
cxxfunc -> f -> main
Expect to see the top two and a warning that there are more frames
(exit code 1)

Signed-off-by: Mark Wielaard <[email protected]>

2 files changed, 15 insertions, 2 deletions

diff --git a/tests/ChangeLog b/tests/ChangeLog
index df5c509a..c9f94ff7 100644
--- a/tests/ChangeLog
+++ b/tests/ChangeLog
@@ -1,3 +1,7 @@
+2014-01-16  Mark Wielaard  <[email protected]>
+
+	* run-backtrace-demangle.sh: Check exitcode and max number of frames.
+
 2014-01-18  Jan Kratochvil  <[email protected]>
 
 	Fix false FAILs on testsuite with ulimit -c unlimited.
diff --git a/tests/run-backtrace-demangle.sh b/tests/run-backtrace-demangle.sh
index b5bddeb3..6e18e77f 100755
--- a/tests/run-backtrace-demangle.sh
+++ b/tests/run-backtrace-demangle.sh
@@ -20,13 +20,22 @@ if test -n "$ELFUTILS_DISABLE_DEMANGLE"; then
 fi
 
 . $srcdir/backtrace-subr.sh
-set -x
 
 child=testfile-backtrace-demangle
 testfiles $child{,.core}
 tempfiles $child.{bt,err}
-testrun ${abs_top_builddir}/src/stack -e $child --core $child.core >$child.bt 2>$child.err
+
+# There can be more than 3 frames, but depending on the system/installed
+# glibc we might not be able to unwind fully till the end.
+# cxxfunc -> f -> main
+# Expect to see the top two and a warning that there are more frames
+# (exit code 1)
+testrun ${abs_top_builddir}/src/stack -n 2 -e $child --core $child.core >$child.bt 2>$child.err || exitcode=$?
 cat $child.{bt,err}
+if test $exitcode != 1 || ! grep "shown max number of frames" $child.err; then
+  echo >&2 $2: expected more than 2 frames
+  false
+fi
 if ! grep -w f $child.bt; then
   echo >&2 $2: no f
   false