/usr/src/gcc-4.8/debian/patches/libjava-testsuite.diff is in gcc-4.8-source 4.8.4-2ubuntu1~14.04.4.
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1 2 3 4 5 6 | # DP: Mark libjava sourcelocation test as failing. PR libjava/55637
--- a/src/libjava/testsuite/libjava.lang/sourcelocation.xfail
+++ b/src/libjava/testsuite/libjava.lang/sourcelocation.xfail
@@ -0,0 +1 @@
+xfail-output
|