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fix: address PR review — fuzz target fixes, UBSan, CI improvements

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Critical fixes:
- Add missing #include <string.h> to 5 fuzz targets (wouldn't compile with GCC14+/Clang16+)
- Fix fuzz_metadata_from_buf.c OOB read: guard size >= sizeof(int) + FILE_METADATA_WIRE_SIZE
- Add Clang compiler check for ENABLE_FUZZ in CMakeLists.txt (fail fast at configure time)
- Add fuzz-build CI job (install clang, build all 6 fuzz targets with ENABLE_FUZZ=ON)

Warning fixes:
- Add UBSan to sanitizer CI matrix (address + undefined)
- Remove tautological test_property_glob_consistency (pure/deterministic function)
- Use fixed seed srand(42) instead of srand(time(NULL)) for reproducible property tests
- Add valid-header + truncated-instructions delta robustness test (exercises instruction-loop error paths)
- Fix lcov --remove to exclude '*/_deps/*' (xxhash coverage pollution)
- Add comment explaining FASTSYNC_UNDER_VALGRIND skip in test_file.c
- Update .gitignore for build-*/ directories
This commit is contained in:
TapTap
2026-07-19 22:43:24 +02:00
parent e9ab84b5ea
commit eb8651e3d5
11 changed files with 72 additions and 25 deletions
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CMakeLists.txt
+10 -4
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@@ -9,8 +9,8 @@ set(CMAKE_C_STANDARD_REQUIRED ON)
add_compile_options(-Wall -g -O3)
# --- Sanitizer option ---
set(SANITIZER "none" CACHE STRING "Sanitizer to enable (address, thread, none)")
set_property(CACHE SANITIZER PROPERTY STRINGS address thread none)
set(SANITIZER "none" CACHE STRING "Sanitizer to enable (address, thread, undefined, none)")
set_property(CACHE SANITIZER PROPERTY STRINGS address thread undefined none)
if(SANITIZER STREQUAL "address")
add_compile_options(-fsanitize=address -fno-omit-frame-pointer -g)
@@ -18,8 +18,11 @@ if(SANITIZER STREQUAL "address")
elseif(SANITIZER STREQUAL "thread")
add_compile_options(-fsanitize=thread -fno-omit-frame-pointer -g)
add_link_options(-fsanitize=thread)
elseif(SANITIZER STREQUAL "undefined")
add_compile_options(-fsanitize=undefined -fno-omit-frame-pointer -g)
add_link_options(-fsanitize=undefined)
elseif(NOT SANITIZER STREQUAL "none")
message(FATAL_ERROR "Unknown sanitizer: ${SANITIZER}. Supported values: address, thread, none")
message(FATAL_ERROR "Unknown sanitizer: ${SANITIZER}. Supported values: address, thread, undefined, none")
endif()
# --- Strict warnings option ---
@@ -84,7 +87,10 @@ add_test(NAME unit_all COMMAND tests)
# --- Fuzz targets (requires clang) ---
option(ENABLE_FUZZ "Build fuzz targets (requires clang)" OFF)
if(ENABLE_FUZZ)
file(GLOB FUZZ_SRCS "tests/fuzz/*.c")
if(NOT CMAKE_C_COMPILER_ID MATCHES "Clang")
message(FATAL_ERROR "ENABLE_FUZZ requires Clang (compiler is ${CMAKE_C_COMPILER_ID})")
endif()
file(GLOB FUZZ_SRCS "tests/fuzz/*.c")
foreach(FUZZ_SRC ${FUZZ_SRCS})
get_filename_component(FUZZ_NAME ${FUZZ_SRC} NAME_WE)
add_executable(${FUZZ_NAME} ${FUZZ_SRC} ${SHARED_SRCS})