src: warn about FastOneByteString invalidation · nodejs/node@42ef814

uint32_t max_length,

// NOLINTNEXTLINE(runtime/references)

FastApiCallbackOptions& options) {

// Just a heads up... this is a v8 fast api function. The use of

// FastOneByteString has some caveats. Specifically, a GC occurring

// between the time the FastOneByteString is created and the time

// we use it below can cause the FastOneByteString to become invalid

// and produce garbage data. This is not a problem here because we

// are not performing any allocations or other operations that would

// trigger a GC before the FastOneByteString is used. Take care when

// modifying this code to ensure that no operations would trigger a GC.

HandleScope handle_scope(options.isolate);

SPREAD_BUFFER_ARG(dst_obj, dst);

CHECK(offset <= dst_length);