Improve a precondition failure message

PiperOrigin-RevId: 232689469
bazelbuild · Feb 6, 2019 · 44a4fd8 · 44a4fd8
1 parent 5fb52ab
commit 44a4fd8
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/Runfiles.java b/src/main/java/com/google/devtools/build/lib/analysis/Runfiles.java
@@ -1115,7 +1115,8 @@ private Builder merge(Runfiles runfiles, boolean includeUnconditionalArtifacts,
       }
       // The suffix should be the same within any blaze build, except for the EMPTY runfiles, which
       // may have an empty suffix, but that is covered above.
-      Preconditions.checkArgument(suffix.equals(runfiles.suffix));
+      Preconditions.checkArgument(
+          suffix.equals(runfiles.suffix), "%s != %s", suffix, runfiles.suffix);
       if (includeUnconditionalArtifacts) {
         artifactsBuilder.addTransitive(runfiles.getUnconditionalArtifacts());
       }