Squashed 'external/toxcore/c-toxcore/' content from commit 67badf69

git-subtree-dir: external/toxcore/c-toxcore
git-subtree-split: 67badf69416a74e74f6d7eb51dd96f37282b8455

testing/distill_corpus.sh

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+#!/bin/sh
+
+HARNESS_BIN="../_afl_build/bootstrap_fuzzer"
+COV_BIN="../_cov_build/bootstrap_fuzzer"
+# move to repo root
+cd ../
+
+cd _afl_out/
+
+# Perform corpus minimization
+mkdir -p corpus-cmin
+rm corpus-cmin/*
+
+afl-cmin -i fuzz0/queue/ -o corpus-cmin/ -- "$HARNESS_BIN"
+
+# Minimize each testcase
+mkdir -p corpus-tmin
+rm corpus-tmin/*
+
+# afl-tmin is VERY slow
+# massive parallel bash piping for the rescue
+find corpus-cmin/ -maxdepth 1 -type f |
+  parallel --bar --joblog ./parallel.log afl-tmin -i ./corpus-cmin/{/} -o ./corpus-tmin/{/} -- "$HARNESS_BIN"
+
+# in case the tmin-process was aborted, just copy non-minimized files
+cp -n ./corpus-cmin/* ./corpus-tmin
+
+# hack to let afl-cov run code coverage on our minimal corpus
+
+rm -R corpus-cov
+mkdir -p corpus-cov/queue
+
+cp corpus-tmin/* corpus-cov/queue
+
+# Run code coverage only on minized corpus to save time
+afl-cov --cover-corpus -d ./corpus-cov --overwrite --coverage-cmd "$COV_BIN @@" --code-dir ../