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-rw-r--r--dom/ipc/JSValidatorChild.cpp10
1 files changed, 7 insertions, 3 deletions
diff --git a/dom/ipc/JSValidatorChild.cpp b/dom/ipc/JSValidatorChild.cpp
index 5070a46492..86ddeb3434 100644
--- a/dom/ipc/JSValidatorChild.cpp
+++ b/dom/ipc/JSValidatorChild.cpp
@@ -179,7 +179,12 @@ JSValidatorChild::GetUTF8EncodedContent(
JSValidatorChild::ValidatorResult JSValidatorChild::ShouldAllowJS(
const mozilla::Span<const char>& aSpan) const {
- MOZ_ASSERT(!aSpan.IsEmpty());
+ // It's possible that the data we get is not valid UTF-8, so aSpan
+ // ends empty here. We should treat it as a failure because this
+ // is not valid JS.
+ if (aSpan.IsEmpty()) {
+ return ValidatorResult::Failure;
+ }
MOZ_DIAGNOSTIC_ASSERT(IsUtf8(aSpan));
@@ -202,9 +207,8 @@ JSValidatorChild::ValidatorResult JSValidatorChild::ShouldAllowJS(
prefableOptions.setAsmJSOption(JS::AsmJSOption::DisabledByAsmJSPref);
JS::CompileOptions options(prefableOptions);
- JS::CompilationStorage storage;
RefPtr<JS::Stencil> stencil =
- JS::CompileGlobalScriptToStencil(fc, options, srcBuf, storage);
+ JS::CompileGlobalScriptToStencil(fc, options, srcBuf);
if (!stencil) {
JS::ClearFrontendErrors(fc);