Fix execution of the CFE tests on non-x86/non-x86-64 platforms.

The tests are enabled to help maintain portability, but CFE is not
actually supported on iOS/ARM, and may need to be disabled in the
ARM build in future (eg, to save space/time).

Resources/Tests/PLCrashAsyncCompactUnwindEncodingTests/test.c

@@ -1,6 +1,9 @@
 #include <mach-o/compact_unwind_encoding.h>
 #include <stddef.h>
 
+// This file contains platform-neutral hand-assembled unwind_info tables,
+// for use in testing handling of unwind info.
+//
 // Keep in sync with PLCrashAsyncCompactUnwindEncodingTests
 #define BASE_PC 0
 

Source/PLCrashAsyncCompactUnwindEncodingTests.m

@@ -199,7 +199,13 @@
     
     
     /* Initialize the CFE reader */
+#if !defined(__i386__) || !defined(__x86_64__)
+    /* CFE is currently only supported for x86/x86-64, but our target binaries are not architecture specific;
+     * we fudge the type reported to the reader to allow us to test the reader on ARM anyway. */
+    cpu_type_t cputype = CPU_TYPE_X86;
+#else
     cpu_type_t cputype = _image.byteorder->swap32(_image.header.cputype);
+#endif
     err = plcrash_async_cfe_reader_init(&_reader, &_unwind_mobj, cputype);
     STAssertEquals(err, PLCRASH_ESUCCESS, @"Failed to initialize CFE reader");