Fuzz testing on

.gitignore

@@ -51,3 +51,4 @@ third_party/
 *.idx
 debug_parser_stub
 .venv/
+oom-*

fuzz/CMakeLists.txt

@@ -60,8 +60,17 @@ if(ENABLE_FUZZING)
 
 
   # Fuzz: parser
-  add_executable(fuzz_parse fuzz_parse.cpp)
-  target_compile_options(fuzz_parse PRIVATE ${WSHELL_FUZZ_COMPILE_OPTS})
-  target_link_options(fuzz_parse PRIVATE ${WSHELL_FUZZ_LINK_OPTS})
+
+  add_executable(fuzz_parse_line fuzz_parse_line.cpp)
+  target_include_directories(fuzz_parse_line PRIVATE ${CMAKE_SOURCE_DIR}/include)
+  target_compile_options(fuzz_parse_line PRIVATE ${WSHELL_FUZZ_COMPILE_OPTS})
+  target_link_options(fuzz_parse_line PRIVATE ${WSHELL_FUZZ_LINK_OPTS})
+  target_link_libraries(fuzz_parse_line PRIVATE wshell_lib)
+
+  add_executable(fuzz_parse_program fuzz_parse_program.cpp)
+  target_include_directories(fuzz_parse_program PRIVATE ${CMAKE_SOURCE_DIR}/include)
+  target_compile_options(fuzz_parse_program PRIVATE ${WSHELL_FUZZ_COMPILE_OPTS})
+  target_link_options(fuzz_parse_program PRIVATE ${WSHELL_FUZZ_LINK_OPTS})
+  target_link_libraries(fuzz_parse_program PRIVATE wshell_lib)
 
 endif()

fuzz/fuzz_parse_line.cpp

@@ -0,0 +1,16 @@
+#include <cstddef>
+#include <cstdint>
+#include <string_view>
+#include <string>
+#include "shell/parser.hpp"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    if (size == 0) return 0;
+    std::string input(reinterpret_cast<const char*>(data), size);
+    try {
+        auto result = wshell::parse_line(input);
+    } catch (...) {
+        // Swallow all exceptions
+    }
+    return 0;
+}

fuzz/fuzz_parse_program.cpp

@@ -0,0 +1,16 @@
+#include <cstddef>
+#include <cstdint>
+#include <string_view>
+#include <string>
+#include "shell/parser.hpp"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    if (size == 0) return 0;
+    std::string input(reinterpret_cast<const char*>(data), size);
+    try {
+        auto result = wshell::parse_program(input);
+    } catch (...) {
+        // Swallow all exceptions
+    }
+    return 0;
+}