Use --union for hpc sum

… which fixes the issue noted in the previous commit (almost a brown
paper bag change).

diff --git a/Makefile b/Makefile
index e59d6dd..41c4917 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -98,7 +98,8 @@ live-test: all
        rm -f *.tix *.mix
        ./live-test.sh
        # combine the tix files
-       hpc sum $(HPCEXCL) $(addsuffix .tix,$(HPROGS)) --output=live-test.tix
+       hpc sum --union $(HPCEXCL) $(addsuffix .tix,$(HPROGS)) \
+         --output=live-test.tix
 ifeq ($(T),markup)
        mkdir -p coverage
        hpc markup --destdir=coverage live-test $(HPCEXCL)