Merge branch 'oss-fuzz'

Add script used by OSS-fuzz service to the main repository itself
instead of having it in a separate one.

README.md

@@ -21,6 +21,7 @@ Platforms
 
 [![AppVeyor](https://img.shields.io/appveyor/ci/wxWidgets/wxWidgets/master.svg?label=Windows)](https://ci.appveyor.com/project/wxWidgets/wxwidgets)
 [![Travis](https://img.shields.io/travis/wxWidgets/wxWidgets/master.svg?label=Linux)](https://travis-ci.org/wxWidgets/wxWidgets)
+[![OSS-Fuzz](https://oss-fuzz-build-logs.storage.googleapis.com/badges/wxwidgets.svg)](https://bugs.chromium.org/p/oss-fuzz/issues/list?sort=-opened&can=1&q=proj:wxwidgets)
 
 This version of wxWidgets supports the following primary platforms:
 

tests/fuzz/ossfuzz.sh

@@ -0,0 +1,12 @@
+#!/bin/bash -eu
+
+# build project
+./configure --without-subdirs --disable-shared --disable-sys-libs --disable-gui LDFLAGS="$CXXFLAGS"
+make -j$(nproc)
+
+# build fuzzers
+$CXX $CXXFLAGS -o $OUT/zip tests/fuzz/zip.cpp \
+    $LIB_FUZZING_ENGINE `./wx-config --cxxflags --libs base`
+
+# and copy their corpora
+zip -j $OUT/zip_seed_corpus.zip tests/fuzz/corpus/zip/*