ofz#4424 black list the div by zero calc cases

Change-Id: I30d06e762901027a50586fcd17398d74ab349373
Reviewed-on: https://gerrit.libreoffice.org/45272
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

bin/oss-fuzz-build.sh

@@ -7,7 +7,7 @@ fi
 
 #shuffle CXXFLAGS -stdlib=libc++ arg into CXX as well because we use
 #the CXX as the linker and need to pass -stdlib=libc++ to build
-export CXX="$CXX -stdlib=libc++"
+export CXX="$CXX -stdlib=libc++ -fsanitize-blacklist=$SRC/libreoffice/bin/sanitize-blacklist.txt"
 #similarly force the -fsanitize etc args in as well as pthread to get
 #things to link successfully during the build
 export LDFLAGS="$CFLAGS -lpthread"

bin/sanitize-blacklist.txt

@@ -0,0 +1,5 @@
+[float-divide-by-zero]
+src:*/sc/source/core/tool/interpr1.cxx
+src:*/sc/source/core/tool/interpr2.cxx
+src:*/scaddins/source/analysis/analysis.cxx
+src:*/scaddins/source/analysis/financial.cxx