| // Copyright 2024 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| |
| #define ARRAY_LEN(array) (sizeof(array) / sizeof(*array)) |
| |
| // DOCSTAG: [static_assert-example] |
| |
| #include "pw_polyfill/static_assert.h" |
| |
| extern int array[3]; |
| |
| static_assert(ARRAY_LEN(array) == 3, "The array must contain 3 elements"); |
| |
| static_assert(sizeof(array) == 3 * sizeof(int)); // The message is optional. |
| |
| // DOCSTAG: [static_assert-example] |
| |
| #if 0 // failing asserts |
| |
| static_assert(0); // no message |
| static_assert(0, "This static assert should FAIL"); |
| |
| #endif // 0 |
| |
| // static_assert should continue to work even if <assert.h> is included, but, |
| // depending on the library, the <assert.h> version of static_assert may |
| // override pw_polyfill's, so the message argument may be required. |
| |
| #include <assert.h> |
| |
| static_assert(1, "This static assert should PASS"); |
