[ci] Run -fno-sanitize-recover=undefined checks

.circleci/config.yml

@@ -194,9 +194,9 @@ jobs:
       - run: apt update || true
       - run: apt install -y clang lld binutils libtool autoconf automake make pkg-config ragel libfreetype6-dev libglib2.0-dev libcairo2-dev libicu-dev libgraphite2-dev python python-pip
       - run: pip install fonttools
-      - run: CPPFLAGS="-fsanitize=undefined" LDFLAGS="-fsanitize=undefined -O1 -g -fno-omit-frame-pointer" CFLAGS="-fsanitize=undefined -O1 -g -fno-omit-frame-pointer" CXXFLAGS="-fsanitize=undefined -O1 -g -fno-omit-frame-pointer" LD=ld.lld CC=clang CXX=clang++ ./autogen.sh --with-freetype --with-glib --with-cairo --with-icu --with-graphite2
+      - run: CPPFLAGS="-fsanitize=undefined -fno-sanitize-recover=undefined" LDFLAGS="-fsanitize=undefined -fno-sanitize-recover=undefined -O1 -g -fno-omit-frame-pointer" CFLAGS="-fsanitize=undefined -O1 -g -fno-omit-frame-pointer" CXXFLAGS="-fsanitize=undefined -O1 -g -fno-omit-frame-pointer" LD=ld.lld CC=clang CXX=clang++ ./autogen.sh --with-freetype --with-glib --with-cairo --with-icu --with-graphite2
       - run: make -j32
-      - run: make check || .ci/fail.sh | asan_symbolize | c++filt
+      - run: UBSAN_OPTIONS=print_stacktrace=1 make check || .ci/fail.sh | asan_symbolize | c++filt
 
   fedora-O0-debug-outoftreebuild-mingw:
     docker: