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-rwxr-xr-xtest/png-roundtrip.test3
1 files changed, 3 insertions, 0 deletions
diff --git a/test/png-roundtrip.test b/test/png-roundtrip.test
index e70f6765..7e7c4a9b 100755
--- a/test/png-roundtrip.test
+++ b/test/png-roundtrip.test
@@ -2,6 +2,9 @@
 # This script tests: pngtopam pnmtopng
 # Also requires:
 
+# Failure message
+## If this test fails and pnm-roundtrip2.test succeeds, it indicates
+## some problem with pnmtopng.
 
 # Test 1.  Should print 1926073387 101484 18 times
 for flags in "" -interlace \