[SR-1101] invalid application of 'typeof' to bit-field when compiled with Clang 3.9 #749
Description
| Previous ID | SR-1101 |
| Radar | None |
| Original Reporter | vivkong (JIRA User) |
| Type | Bug |
| Status | Resolved |
| Resolution | Done |
Environment
Linux on System z
Additional Detail from JIRA
| Votes | 0 |
| Component/s | libdispatch |
| Labels | Bug |
| Assignee | dgrove-oss (JIRA) |
| Priority | Medium |
md5: a7951153e57029c0fb082e9d3b092d9d
Issue Description:
Trying to compile libdispatch using Clang 3.9 (trunk) and ran into these errors:
In file included from allocator.c:21:
In file included from ./internal.h:824:
./inline_internal.h:500:2: error: invalid application of 'typeof' to bit-field
dispatch_assert(dq->dq_is_thread_bound);
^
./internal.h:401:10: note: expanded from macro 'dispatch_assert'
typeof(e) _e = fastpath(e); /* always eval 'e' */ \
^queue.c:3071:6: error: invalid application of 'typeof' to bit-field
if (slowpath(dq->dq_is_thread_bound) ||
^
./internal.h:320:29: note: expanded from macro 'slowpath'
#define slowpath(x) ((typeof(x))__builtin_expect((long)(x), 0l))source.c:624:2: error: invalid application of 'typeof' to bit-field
dispatch_assert_zero(ds->ds_is_installed);
^
./internal.h:423:10: note: expanded from macro 'dispatch_assert_zero'
typeof(e) _e = slowpath(e); /* always eval 'e' */ \
^
source.c:624:2: error: invalid application of 'typeof' to bit-field
./internal.h:423:19: note: expanded from macro 'dispatch_assert_zero'
typeof(e) _e = slowpath(e); /* always eval 'e' */ \
^
./internal.h:320:29: note: expanded from macro 'slowpath'
#define slowpath(x) ((typeof(x))__builtin_expect((long)(x), 0l))
^We need to use Clang 3.9 as we encountered some bugs in Clang 3.6 that has been fixed in trunk. The restriction on applying typeof to a bit-field was added last November:
http://lists.llvm.org/pipermail/cfe-commits/Week-of-Mon-20151109/142911.html