Make fuzzer use new buffer interface rather than a tempfile

.gitignore

@@ -1,4 +1,7 @@
 build
+build_fuzz
+*.tar.bz2
+*.tar.zstd
 cmake-build-*
 *.o
 *~

CMakeLists.txt

@@ -223,7 +223,6 @@ if (TAILSLIDE_BUILD_FUZZER)
     fuzz/fuzz.cc
   )
   target_sources(tailslide_fuzzer PRIVATE
-    fuzz/fuzz_utils.hh
   )
   target_include_directories(tailslide_fuzzer PUBLIC ${CMAKE_CURRENT_BINARY_DIR} libtailslide)
   target_link_libraries(tailslide_fuzzer PUBLIC ${EXTRA_LIBS} libtailslide "-fsanitize=fuzzer,address")

fuzz.sh

@@ -0,0 +1,14 @@
+#1/bin/bash
+
+set -e
+
+pushd "$( dirname "${BASH_SOURCE[0]}" )" > /dev/null
+
+mkdir -p build_fuzz
+pushd build_fuzz
+mkdir -p fuzz_inputs
+
+find ../tests/ -name "*.lsl" | grep -v "/expected/" | xargs -I'{}' cp '{}' fuzz_inputs/
+CXX=clang++ CC=clang cmake .. -DTAILSLIDE_BUILD_FUZZER=on
+cmake --build .
+./tailslide-fuzzer ./fuzz_inputs/ -fork=8

fuzz/fuzz.cc

@@ -1,6 +1,5 @@
 #include <iostream>
 
-#include "fuzz_utils.hh"
 #include "tailslide.hh"
 #include "passes/tree_simplifier.hh"
 #include "passes/lso/script_compiler.hh"
@@ -19,14 +18,9 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     compile_cil = getenv("COMPILE_CIL") != nullptr;
   }
 
-  const char *file = buf_to_file(data, size);
-  if (!file) {
-    exit(EXIT_FAILURE);
-  }
-
   Tailslide::ScopedScriptParser parser(nullptr);
   try {
-    auto *script = parser.parseLSLFile(file);
+    auto *script = parser.parseLSLBytes((const char *)data, size);
     if (script) {
       script->collectSymbols();
       script->determineTypes();
@@ -65,9 +59,5 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     std::cout << e.what() << std::endl;
   }
 
-  if (delete_file(file) != 0) {
-    exit(EXIT_FAILURE);
-  }
-
   return EXIT_SUCCESS;
 }