core: frontend: cpp: check source file exists before reading (#1911)

Signed-off-by: David Korczynski <[email protected]>

Author: DavidKorczynski

src/fuzz_introspector/frontends/frontend_cpp.py

@@ -371,6 +371,8 @@ def load_treesitter_trees(source_files, log_harnesses=True):
     for language in source_files:
         if language == 'cpp':
             for code_file in source_files[language]:
+                if not os.path.isfile(code_file):
+                    continue
                 source_cls = SourceCodeFile(code_file, language)
                 if log_harnesses:
                     if source_cls.has_libfuzzer_harness():

src/fuzz_introspector/frontends/oss_fuzz.py

@@ -175,7 +175,7 @@ def process_jvm_project(target_dir, entrypoint, out):
 def analyse_folder(language, directory, entrypoint, out=''):
     if language == 'c':
         process_c_project(directory, entrypoint, out)
-    if language == 'cpp':
+    if language.lower() in ['cpp', 'c++']:
         process_cpp_project(directory, entrypoint, out)
     if language == 'go':
         process_go_project(directory, out)