Work around OS/2 limitation of printf(1).

* tests/null.m4: Use m4, not printf, to generate NUL byte.
* tests/null.out: Check for esyscmd failure.
Reported by Elbert Pol.

Signed-off-by: Eric Blake <ebb9@byu.net>

3 files changed, 7 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 0869fc58..58b874ef 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2008-04-15  Eric Blake  <ebb9@byu.net>
+
+	Work around OS/2 limitation of printf(1).
+	* tests/null.m4: Use m4, not printf, to generate NUL byte.
+	* tests/null.out: Check for esyscmd failure.
+	Reported by Elbert Pol.
+
 2008-04-14  Eric Blake  <ebb9@byu.net>
 
 	Stage 21b: $@ concatenates builtins, m4wrap takes builtins.
diff --git a/tests/null.m4 b/tests/null.m4
index 83e7c344..90e339f3 100644
--- a/tests/null.m4
+++ b/tests/null.m4
diff --git a/tests/null.out b/tests/null.out
index aca4b785..cd3764f7 100644
--- a/tests/null.out
+++ b/tests/null.out