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comparison: js/src/jsapi-tests/testValueABI.cpp
js/src/jsapi-tests/testValueABI.cpp
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #include "jsapi-tests/tests.h" | |
| 6 | |
| 7 /* | |
| 8 * Bug 689101 - jsval is technically a non-POD type because it has a private | |
| 9 * data member. On gcc, this doesn't seem to matter. On MSVC, this prevents | |
| 10 * returning a jsval from a function between C and C++ because it will use a | |
| 11 * retparam in C++ and a direct return value in C. | |
| 12 * | |
| 13 * Bug 712289 - jsval alignment was different on 32-bit platforms between C and | |
| 14 * C++ because the default alignments of js::Value and jsval_layout differ. | |
| 15 */ | |
| 16 | |
| 17 extern "C" { | |
| 18 | |
| 19 extern bool | |
| 20 C_ValueToObject(JSContext *cx, jsval v, JSObject **obj); | |
| 21 | |
| 22 extern jsval | |
| 23 C_GetEmptyStringValue(JSContext *cx); | |
| 24 | |
| 25 extern size_t | |
| 26 C_jsvalAlignmentTest(); | |
| 27 | |
| 28 } | |
| 29 | |
| 30 BEGIN_TEST(testValueABI_retparam) | |
| 31 { | |
| 32 JS::RootedObject obj(cx, JS::CurrentGlobalOrNull(cx)); | |
| 33 jsval v = OBJECT_TO_JSVAL(obj); | |
| 34 obj = nullptr; | |
| 35 CHECK(C_ValueToObject(cx, v, obj.address())); | |
| 36 bool equal; | |
| 37 CHECK(JS_StrictlyEqual(cx, v, OBJECT_TO_JSVAL(obj), &equal)); | |
| 38 CHECK(equal); | |
| 39 | |
| 40 v = C_GetEmptyStringValue(cx); | |
| 41 CHECK(JSVAL_IS_STRING(v)); | |
| 42 | |
| 43 return true; | |
| 44 } | |
| 45 END_TEST(testValueABI_retparam) | |
| 46 | |
| 47 BEGIN_TEST(testValueABI_alignment) | |
| 48 { | |
| 49 typedef struct { char c; jsval v; } AlignTest; | |
| 50 CHECK(C_jsvalAlignmentTest() == sizeof(AlignTest)); | |
| 51 | |
| 52 return true; | |
| 53 } | |
| 54 END_TEST(testValueABI_alignment) |
