fix: add -fno-sanitize=undefined to every compilation

Author: tensorush

build.zig

@@ -491,7 +491,7 @@ pub fn build(b: *std.Build) !void {
     });
     socketfuzz_lib.addCSourceFile(.{
         .file = AFLplusplus_utl_path.path(b, "socket_fuzzing/socketfuzz.c"),
-        .flags = &.{ if (ptr_bit_width == 32) "-m32" else "-m64", "-Wall", "-Wextra" },
+        .flags = &.{ if (ptr_bit_width == 32) "-m32" else "-m64", "-Wall", "-Wextra", "-fno-sanitize=undefined" },
     });
     socketfuzz_lib.addIncludePath(AFLplusplus_inc_path);
     socketfuzz_lib.linkLibC();
@@ -511,7 +511,7 @@ pub fn build(b: *std.Build) !void {
     });
     argvfuzz_lib.addCSourceFile(.{
         .file = AFLplusplus_utl_path.path(b, "argv_fuzzing/argvfuzz.c"),
-        .flags = &.{ if (ptr_bit_width == 32) "-m32" else "-m64", "-Wall", "-Wextra" },
+        .flags = &.{ if (ptr_bit_width == 32) "-m32" else "-m64", "-Wall", "-Wextra", "-fno-sanitize=undefined" },
     });
     argvfuzz_lib.addIncludePath(AFLplusplus_inc_path);
     argvfuzz_lib.linkLibC();
@@ -575,6 +575,7 @@ const EXE_FLAGS = .{
     "-Wno-pointer-sign",
     "-Wno-pointer-arith",
     "-Wno-variadic-macros",
+    "-fno-sanitize=undefined",
     "-DDOC_PATH=\"\"",
     "-D_AFL_SPECIAL_PERFORMANCE",
 };
@@ -590,6 +591,7 @@ const LLVM_EXE_C_FLAGS = .{
     "-Wno-unused-result",
     "-Wno-unused-function",
     "-Wno-variadic-macros",
+    "-fno-sanitize=undefined",
     "-Wno-deprecated-copy-with-dtor",
     "-DUSE_BINDIR=1",
     "-DAFL_REAL_LD=\"lld\"",
@@ -632,5 +634,6 @@ const UTIL_LIB_FLAGS = .{
     "-funroll-loops",
     "-Wall",
     "-Wno-pointer-sign",
+    "-fno-sanitize=undefined",
     "-D_FORTIFY_SOURCE=2",
 };