release/21.x: [libunwind] fix building on Haiku i386 (#171586)

[llvmbot]

Backport 3fdce79

Requested by: @brad0

[llvmbot]

@mstorsjo What do you think about merging this PR to the release branch?

[llvmbot]

@llvm/pr-subscribers-libunwind

Author: None (llvmbot)

Changes

Backport 3fdce79

Requested by: @brad0

---

Full diff: https://github.com/llvm/llvm-project/pull/171754.diff

1 Files Affected:

• (modified) libunwind/src/UnwindCursor.hpp (+3-2)

diff --git a/libunwind/src/UnwindCursor.hpp b/libunwind/src/UnwindCursor.hpp
index 9a1afd3721f5a..1dcf2e14da851 100644
--- a/libunwind/src/UnwindCursor.hpp
+++ b/libunwind/src/UnwindCursor.hpp
@@ -41,7 +41,8 @@
 #define _LIBUNWIND_CHECK_LINUX_SIGRETURN 1
 #endif
 
-#if defined(_LIBUNWIND_TARGET_HAIKU) && defined(_LIBUNWIND_TARGET_X86_64)
+#if defined(_LIBUNWIND_TARGET_HAIKU) &&                                        \
+    (defined(_LIBUNWIND_TARGET_I386) || defined(_LIBUNWIND_TARGET_X86_64))
 #include <OS.h>
 #include <signal.h>
 #define _LIBUNWIND_CHECK_HAIKU_SIGRETURN 1
@@ -1345,7 +1346,7 @@ class UnwindCursor : public AbstractUnwindCursor{
   bool             _unwindInfoMissing;
   bool             _isSignalFrame;
 #if defined(_LIBUNWIND_CHECK_LINUX_SIGRETURN) ||                               \
-    defined(_LIBUNWIND_TARGET_HAIKU)
+    defined(_LIBUNWIND_CHECK_HAIKU_SIGRETURN)
   bool             _isSigReturn = false;
 #endif
 };

[dyung]

If you would like this fix included in the 21.x release branch, can you take a look at the premerge test failures to verify they are not related to the change and get someone to approve the change?