static JS::UniqueChars FormatWasmFrame(JSContext* cx, const FrameIter& iter, JS::UniqueChars&& inBuf, int num, bool showArgs) { JSAtom* functionDisplayAtom = iter.functionDisplayAtom(); UniqueChars nameStr; if (functionDisplayAtom) nameStr = StringToNewUTF8CharsZ(cx, *functionDisplayAtom); JS::UniqueChars buf = sprintf_append(cx, Move(inBuf), "%d %s()", num, nameStr ? nameStr.get() : "<wasm-function>"); if (!buf) return nullptr; const char* filename = iter.filename(); uint32_t lineno = iter.computeLine(); buf = sprintf_append(cx, Move(buf), " [\"%s\":%d]\n", filename ? filename : "<unknown>", lineno); MOZ_ASSERT(!cx->isExceptionPending()); return buf; }