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[Bug preprocessor/63831] [5 Regression] r217292 causes segfaults with -MM
- From: "iains at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sat, 22 Nov 2014 15:35:34 +0000
- Subject: [Bug preprocessor/63831] [5 Regression] r217292 causes segfaults with -MM
- Auto-submitted: auto-generated
- References: <bug-63831-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63831
--- Comment #13 from Iain Sandoe <iains at gcc dot gnu.org> ---
So at stage #3 building libada, we see that s-oscons.{adb,h} are empty.
Looking at the error log :
ln: rts/system.ads: File exists
In file included from /usr/include/sys/time.h:78:0,
from /GCC/gcc-trunk/gcc/ada/gsocket.h:183,
from /GCC/gcc-trunk/gcc/ada/s-oscons-tmplt.c:103:
/usr/include/sys/_structs.h: In function â__has_attribute__â:
/usr/include/sys/_structs.h:186:3: error: storage class specified for parameter
âfd_setâ
} fd_set;
^
/usr/include/sys/_structs.h:192:1: error: expected â=â, â,â, â;â, âasmâ or
â__attribute__â before â{â token
{
^
In file included from /GCC/gcc-trunk/gcc/ada/gsocket.h:183:0,
from /GCC/gcc-trunk/gcc/ada/s-oscons-tmplt.c:103:
/usr/include/sys/time.h:82:25: error: storage class specified for parameter
âtime_tâ
typedef __darwin_time_t time_t;
=== note in the stuff below:
Availability.h includes AvailabilityInternal.h which uses:
#ifdef __has_attribute
#if __has_attribute(availability)
/* use better attributes if possible */
what's not obvious is why that's causing a failure in this context (but passing
elsewhere in the compile.
[of course, could be buggy system headers, but then clang works on this
platform, so I suppose it should have been exercised.]
I don't think I can share darwin headers here - but it's likely that we can
find the key ones on the apple OpenSource server, if you don't have access to
them.
In the meantime I'll see if I can narrow things down.
==== /GCC/gcc-trunk/gcc/ada/s-oscons-tmplt.c
102
103 #include "gsocket.h"
104
==== /GCC/gcc-trunk/gcc/ada/gsocket.h
180 #if defined (__vxworks) && ! defined (__RTP__)
181 #include <sys/times.h>
182 #else
183 #include <sys/time.h>
184 #endif
==== /usr/include/sys/time.h
64 #ifndef _SYS_TIME_H_
65 #define _SYS_TIME_H_
66
67 #include <sys/cdefs.h>
68 #include <sys/_types.h>
69 #include <Availability.h>
70
71 /*
72 * [XSI] The fd_set type shall be defined as described in
<sys/select.h>.
73 * The timespec structure shall be defined as described in <time.h>
74 */
75 #define __need_fd_set
76 #define __need_struct_timespec
77 #define __need_struct_timeval
78 #include <sys/_structs.h>
==== /usr/include/sys/_structs.h
183 __BEGIN_DECLS
184 typedef struct fd_set {
185 __int32_t fds_bits[__DARWIN_howmany(__DARWIN_FD_SETSIZE,
__DARWIN_NFDBITS)];
186 } fd_set;
187 __END_DECLS