==19462==ERROR: AddressSanitizer: heap-use-after-free on address 0x7fd766c42800 at pc 0xe1f587 bp 0x7fffcb1b6ed0 sp 0x7fffcb1b6ec8
READ of size 6143520 at 0x7fd766c42800 thread T0
    #0 0xe1f586 in void mozilla::PodCopy<char16_t>(char16_t*, char16_t const*, unsigned long) /srv/repos/mozilla-central/js/src/opt64asan/js/src/../../dist/include/mozilla/PodOperations.h:110
    #1 0x5904e2 in js::frontend::CompileScript(js::ExclusiveContext*, js::LifoAlloc*, JS::Handle<JSObject*>, JS::Handle<JSScript*>, JS::ReadOnlyCompileOptions const&, char16_t const*, unsigned long, JSString*, unsigned int, js::SourceCompressionTask*) /srv/repos/mozilla-central/js/src/frontend/BytecodeCompiler.cpp:215
    #2 0xc7eb8d in JS::Compile(JSContext*, JS::Handle<JSObject*>, JS::ReadOnlyCompileOptions const&, char16_t const*, unsigned long) /srv/repos/mozilla-central/js/src/jsapi.cpp:4478
    #3 0x4f63a6 in Run(JSContext*, unsigned int, JS::Value*) /srv/repos/mozilla-central/js/src/shell/js.cpp:1193
