use custom llvm to emit pulse linearly in libfuzzer

action.yml

@@ -6,6 +6,6 @@ inputs:
     required: true
 runs:
   using: 'docker'
-  image: 'Dockerfile'
+  image: 'docker://anthonylh/llvm-patched-libfuzzer'
   args:
     - ${{ inputs.command }}

scripts/entrypoint.sh

@@ -6,4 +6,4 @@ export HOME=/root
 echo $PATH
 echo `which cargo`
 git config --global --add safe.directory /github/workspace
-exec bash -c "$@"
+exec bash -c "PATH=/usr/bin/llvmorg-17.0.6/bin:\$PATH $@"

scripts/setup.sh

@@ -1,8 +1,6 @@
 #!/bin/bash
 
 set -exo pipefail
-LLVM_VERSION=17
-
 
 apt-get update
 DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y \
@@ -13,13 +11,13 @@ DEBIAN_FRONTEND=noninteractive apt-get install --no-install-recommends -y \
   software-properties-common \
   gnupg \
   linux-headers-generic \
-  librocksdb-dev
+  librocksdb-dev \
+  unzip
 
 cd /usr/bin
 
-wget https://apt.llvm.org/llvm.sh
-chmod +x llvm.sh
-./llvm.sh ${LLVM_VERSION}
+curl -o llvmorg-17.0.6.zip https://fuzzcorp-dist-a9302fb.s3.us-east-2.amazonaws.com/llvmorg-17.0.6.zip
+unzip llvmorg-17.0.6.zip
 
 # install rust
 curl https://sh.rustup.rs -sSf | sh -s -- -y
@@ -28,9 +26,9 @@ rustup toolchain install nightly
 rustup default nightly
 rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu
 
-ln -s "../lib/llvm-${LLVM_VERSION}/bin/clang" clang
-ln -s "../lib/llvm-${LLVM_VERSION}/bin/clang++" clang++
+ln -s "/usr/bin/llvmorg-17.0.6/bin/clang" clang
+ln -s "/usr/bin/llvmorg-17.0.6/bin/clang++" clang++
 
-ln -sf /usr/bin/ld.lld-17 /usr/bin/ld
-update-alternatives --install /usr/bin/cc cc "/lib/llvm-${LLVM_VERSION}/bin/clang" 50
-update-alternatives --install /usr/bin/c++ c++ "/lib/llvm-${LLVM_VERSION}/bin/clang++" 50
+ln -sf //usr/bin/llvmorg-17.0.6/bin/ld.lld /usr/bin/ld
+update-alternatives --install /usr/bin/cc cc "/usr/bin/llvmorg-17.0.6/bin/clang" 50
+update-alternatives --install /usr/bin/c++ c++ "/usr/bin/llvmorg-17.0.6/bin/clang++" 50