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Fuzzing: compile the whole libespeak with -fsanitize=fuzzer-no-link

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-fsanitize=fuzzer-no-link makes it workable to build a library with fuzzing
enabled, and let the fuzzing test program explicitly trigger the fuzzing.

This allows fuzzing to trace cmp instructions to guide the fuzzing to
improve results.
This commit is contained in:
Samuel Thibault
2023-03-30 02:31:03 +02:00
parent ff46761d6a
commit eabe24901f
4 changed files with 37 additions and 24 deletions
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.github/workflows/fuzzing.yml
+4 -3
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@@ -16,6 +16,7 @@ jobs:
include:
- arch: x86-32
archdeps: "gcc-multilib g++-multilib libpcaudio-dev:i386 libsonic-dev:i386 libc6-dbg:i386"
archconfig: "--host=i686-linux-gnu"
archconfigflags: "-m32"
- arch: x86-64
@@ -31,11 +32,11 @@ jobs:
- name: autoconf
run: ./autogen.sh ; chmod -x INSTALL m4/*.m4
- name: configure
run: CC=clang CXX=clang++
CFLAGS="${{ matrix.archconfigflags }} -fsanitize=address,undefined -fstack-protector-strong -g -Og -fno-omit-frame-pointer"
run: CC="clang ${{ matrix.archconfigflags }}" CXX="clang++ ${{ matrix.archconfigflags }}"
CFLAGS="-fsanitize=address,undefined -fstack-protector-strong -g -Og -fno-omit-frame-pointer"
CXXFLAGS="${{ matrix.archconfigflags }} -fsanitize=address,undefined -fstack-protector-strong -g -Og -fno-omit-frame-pointer"
LDFLAGS="-fsanitize=address,undefined -lubsan"
./configure --with-libfuzzer
./configure ${{ matrix.archconfig }} --with-libfuzzer
- name: Store the fuzzer config
if: ${{ failure() }}
uses: actions/upload-artifact@v3