[m-rev.] diff: fix the "failure" of tests/hard_coded/init_excp for C# and Java grades

[Julien Fischer]

Fix the "failure" of tests/hard_coded/init_excp for C# and Java grades.

tests/hard_coded/Mmakefile:
     Filter the output for the above test to remove C# (Mono) and
     Java stack traces.  Because of the way initialisers are (currently)
     implemented for those backends using MERCURY_SUPPRESS_STACK_TRACE
     would not work (even if the respective runtimes supported it).

tests/hard_coded/init_excp.exp2:
     Expected output for the Java grades.

tests/hard_coded/init_excp.exp3:
     Expected output for the C# grades.

Julien.

diff --git a/tests/hard_coded/Mmakefile b/tests/hard_coded/Mmakefile
index 0511ce3..7839faf 100644
--- a/tests/hard_coded/Mmakefile
+++ b/tests/hard_coded/Mmakefile
@@ -910,13 +910,18 @@ final_excp.out: final_excp
  	fi

  # init_excp.out is expected to fail (it calls throw/1).
+# We need to filter the output for the C# and Java backends in order to remove
+# the stack trace in those grades.   Because the exception is thrown from
+# an initialiser rather than from main/2 we don't have any control over
+# whether the stack trace is printed or not.
  #
  init_excp.out: init_excp
  	if MERCURY_SUPPRESS_STACK_TRACE=yes ./init_excp > $@.tmp 2>&1; then \
  		grep  . $@.tmp; \
  		exit 1; \
  	else \
-		mv $@.tmp $@; \
+		grep -v "at\ j\?mercury\|System\|\-\-\-" $@.tmp > $@; \
+		rm -f #@.tmp; \
  	fi

  # functor_ho_inst_excp.out is expected to throw an exception or cause
diff --git a/tests/hard_coded/init_excp.exp2 b/tests/hard_coded/init_excp.exp2
index e69de29..36d00e9 100644
--- a/tests/hard_coded/init_excp.exp2
+++ b/tests/hard_coded/init_excp.exp2
@@ -0,0 +1,3 @@
+This is init_pred_a/2
+EXCEPTION
+Exception in thread "main" jmercury.runtime.Exception: magic_number_exception
diff --git a/tests/hard_coded/init_excp.exp3 b/tests/hard_coded/init_excp.exp3
index e69de29..b8ead73 100644
--- a/tests/hard_coded/init_excp.exp3
+++ b/tests/hard_coded/init_excp.exp3
@@ -0,0 +1,4 @@
+This is init_pred_a/2
+EXCEPTION
+
+Unhandled Exception: