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[fuzzer] Use recursion scope only for nullable references in GenerateRef

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Use recursion scope only for nullable references in the
GenerateRef function. We declare the recursion scope as
an optional and only initialize it if the reference type
is nullable.

Bug: v8:11954, chromium:1270126
Change-Id: I1548290cc9d48167f6fd56ff653744d472f65635
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3284894
Reviewed-by: Thibaud Michaud <thibaudm@chromium.org>
Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Maria Tîmbur <mtimbur@google.com>
Cr-Commit-Position: refs/heads/main@{#77943}
This commit is contained in:
Maria Tîmbur 2021-11-16 15:27:54 +00:00 committed by V8 LUCI CQ
parent a533662e79
commit 521679172e
1 changed files with 5 additions and 1 deletions
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6
test/fuzzer/wasm-compile.cc
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@ -2065,7 +2065,11 @@ void WasmGenerator::Generate(ValueType type, DataRange* data) {
void WasmGenerator::GenerateRef(HeapType type, DataRange* data,
Nullability nullability) {
GeneratorRecursionScope rec_scope(this);
base::Optional<GeneratorRecursionScope> rec_scope;
if (nullability) {
rec_scope.emplace(this);
}
if (recursion_limit_reached() || data->size() == 0) {
if (nullability == kNullable) {
ref_null(type, data);