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--- src/include/storage/s_lock.h.orig 2021-04-15 17:59:43 UTC
+++ src/include/storage/s_lock.h
@@ -320,7 +320,7 @@ tas(volatile slock_t *lock)
* We use the int-width variant of the builtin because it works on more chips
* than other widths.
*/
-#if defined(__arm__) || defined(__arm) || defined(__aarch64__) || defined(__aarch64)
+#if defined(__arm__) || defined(__arm) || defined(__aarch64__) || defined(__aarch64) || defined(__riscv)
#ifdef HAVE_GCC__SYNC_INT32_TAS
#define HAS_TEST_AND_SET
@@ -337,7 +337,7 @@ tas(volatile slock_t *lock)
#define S_UNLOCK(lock) __sync_lock_release(lock)
#endif /* HAVE_GCC__SYNC_INT32_TAS */
-#endif /* __arm__ || __arm || __aarch64__ || __aarch64 */
+#endif /* __arm__ || __arm || __aarch64__ || __aarch64 || __riscv */
/* S/390 and S/390x Linux (32- and 64-bit zSeries) */
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