Changeset 108718 in vbox for trunk/src/VBox/Runtime/testcase

Timestamp:

Mar 24, 2025 2:56:08 PM (5 weeks ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

168135

Message:

Runtime/testcase/tstRTInlineAsm.cpp: Enforce alignment of s_u128 at a 16 byte boundary as at least some versions of clang fail to do so automatically causing a crash in the testcase on darwin.amd64 at least

File:

• trunk/src/VBox/Runtime/testcase/tstRTInlineAsm.cpp (modified) (1 diff)

trunk/src/VBox/Runtime/testcase/tstRTInlineAsm.cpp

@@ -3109 +3109 @@
     static int64_t  volatile s_i64;
 #if defined(RTASM_HAVE_CMP_WRITE_U128) || defined(RTASM_HAVE_CMP_XCHG_U128)
-    static RTUINT128U volatile s_u128;
+     /* Some clang versions fail to align it automatically causing a crash in ASMAtomicCmpXchgU128v2() called through ASMAtomicUoReadU128() on darwin.amd64 */
+    RT_ALIGNAS_VAR(16) static RTUINT128U volatile s_u128;
 #endif
     static uint8_t  s_u8Old;