diff options
Diffstat (limited to 'lib/std/Build/Step/Compile.zig')
| -rw-r--r-- | lib/std/Build/Step/Compile.zig | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/lib/std/Build/Step/Compile.zig b/lib/std/Build/Step/Compile.zig index 1aeebbb55b..922d64c728 100644 --- a/lib/std/Build/Step/Compile.zig +++ b/lib/std/Build/Step/Compile.zig @@ -218,12 +218,18 @@ no_builtin: bool = false, /// Managed by the build runner, not user build script. zig_process: ?*Step.ZigProcess, -/// Enables deprecated coverage instrumentation that is only useful if you -/// are using third party fuzzers that depend on it. Otherwise, slows down -/// the instrumented binary with unnecessary function calls. +/// Enables coverage instrumentation that is only useful if you are using third +/// party fuzzers that depend on it. Otherwise, slows down the instrumented +/// binary with unnecessary function calls. /// -/// To enable fuzz testing instrumentation on a compilation, see the `fuzz` -/// flag in `Module`. +/// This kind of coverage instrumentation is used by AFLplusplus v4.21c, +/// however, modern fuzzers - including Zig - have switched to using "inline +/// 8-bit counters" or "inline bool flag" which incurs only a single +/// instruction for coverage, along with "trace cmp" which instruments +/// comparisons and reports the operands. +/// +/// To instead enable fuzz testing instrumentation on a compilation using Zig's +/// builtin fuzzer, see the `fuzz` flag in `Module`. sanitize_coverage_trace_pc_guard: ?bool = null, pub const ExpectedCompileErrors = union(enum) { |