[wasm] Do not use setjmp/longjmp in cctests.

test/cctest/wasm/test-run-wasm.cc

Index: test/cctest/wasm/test-run-wasm.cc
diff --git a/test/cctest/wasm/test-run-wasm.cc b/test/cctest/wasm/test-run-wasm.cc
index 05370b5775950d7bc1ba88203b37f56b0107a3e2..e96fca9885d10ed4f72367e408de463442b0b04f 100644
--- a/test/cctest/wasm/test-run-wasm.cc
+++ b/test/cctest/wasm/test-run-wasm.cc
@@ -1047,6 +1047,9 @@ WASM_EXEC_TEST(I32ReinterpretF32) {
   }
 }
 
+// Do not run this test in a simulator because of signalling NaN issues on ia32.
+#ifndef USE_SIMULATOR
+
 WASM_EXEC_TEST(SignallingNanSurvivesI32ReinterpretF32) {
   WasmRunner<int32_t> r(execution_mode);
 
@@ -1057,6 +1060,8 @@ WASM_EXEC_TEST(SignallingNanSurvivesI32ReinterpretF32) {
   CHECK_EQ(0x7fa00000, r.Call());
 }
 
+#endif
+
 WASM_EXEC_TEST_WITH_TRAP(LoadMaxUint32Offset) {
   WasmRunner<int32_t> r(execution_mode);
   r.module().AddMemoryElems<int32_t>(8);