[Bug bootstrap/47902] New: Bootstrap failure: libiberty/regex.c: error: two or more data types in declaration specifiers

[Bug bootstrap/47902] New: Bootstrap failure: libiberty/regex.c: error: two or more data types in declaration specifiers

[skunk at iskunk dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47902

           Summary: Bootstrap failure: libiberty/regex.c: error: two or
                    more data types in declaration specifiers
           Product: gcc
           Version: 4.5.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: skunk@iskunk.org
              Host: powerpc-ibm-aix4.3.2.0
            Target: powerpc-ibm-aix4.3.2.0
             Build: powerpc-ibm-aix4.3.2.0


Bootstrapping on this AIX system bombs out with

/tmp/gcc-4.5.2-build/./prev-gcc/xgcc -B/tmp/gcc-4.5.2-build/./prev-gcc/
-B/opt/tg/powerpc-ibm-aix4.3.2.0/bin/ -B/opt/tg/powerpc-ibm-aix4.3.2.0/bin/
-B/opt/tg/powerpc-ibm-aix4.3.2.0/lib/ -isystem
/opt/tg/powerpc-ibm-aix4.3.2.0/include -isystem
/opt/tg/powerpc-ibm-aix4.3.2.0/sys-include    -c -DHAVE_CONFIG_H -g -O2  -I.
-I/home/src/gcc-4.5.2/libiberty/../include  -W -Wall -Wwrite-strings
-Wc++-compat -Wstrict-prototypes -pedantic 
/home/src/gcc-4.5.2/libiberty/regex.c -o regex.o
In file included from
/tmp/gcc-4.5.2-build/./prev-gcc/include-fixed/sys/wait.h:49:0,
                 from
/tmp/gcc-4.5.2-build/./prev-gcc/include-fixed/stdlib.h:233,
                 from /home/src/gcc-4.5.2/libiberty/regex.c:128:
/tmp/gcc-4.5.2-build/./prev-gcc/include-fixed/sys/types.h:212:23: error: two or
more data types in declaration specifiers
make[3]: *** [regex.o] Error 1
make[3]: Leaving directory `/tmp/gcc-4.5.2-build/libiberty'
make[2]: *** [all-stage2-libiberty] Error 2
make[2]: Leaving directory `/tmp/gcc-4.5.2-build'
make[1]: *** [stage2-bubble] Error 2
make[1]: Leaving directory `/tmp/gcc-4.5.2-build'
make: *** [bootstrap-lean] Error 2


The cited portion of include-fixed/sys/types.h looks like this:

--------8<--------
typedef uint_t          uid_t;          /* user ID */
typedef uint_t          gid_t;          /* group ID */
typedef __ptr32         mid_t;          /* module ID    */
typedef int32long64_t   pid_t;          /* process ID */ <--- LINE 212
typedef int32long64_t   tid_t;          /* thread ID */
typedef char            slab_t[12];     /* security label */
typedef long            mtyp_t;         /* ipc message type */
-------->8--------

If I change up the compiler invocation from -c to -E, that same portion looks
like this:

--------8<--------
typedef uint_t uid_t;
typedef uint_t gid_t;
typedef __ptr32 mid_t;
typedef int32long64_t int;   <--- HMMM
typedef int32long64_t tid_t;
typedef char slab_t[12];
typedef long mtyp_t;
-------->8--------

Interestingly enough...

> grep pid_t /tmp/gcc-4.5.2-build/libiberty/config.h
#define pid_t int

If I stick in an "#undef pid_t" right before the offending line, regex.c
compiles successfully.

[Bug bootstrap/47902] Bootstrap failure: libiberty/regex.c: error: two or more data types in declaration specifiers

[schwab@linux-m68k.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47902

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2011.02.26 09:11:21
     Ever Confirmed|0                           |1

--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> 2011-02-26 09:11:21 UTC ---
Please look at libiberty/config.log to find out why configure didn't find
pid_t.

[Bug bootstrap/47902] Bootstrap failure: libiberty/regex.c: error: two or more data types in declaration specifiers

[skunk at iskunk dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47902

--- Comment #2 from Daniel Richard G. <skunk at iskunk dot org> 2011-02-26 09:18:13 UTC ---
>From config.log:

configure:5203: checking for pid_t
configure:5203: gcc -c -g  conftest.c >&5
configure:5203: $? = 0
configure:5203: gcc -c -g  conftest.c >&5
conftest.c: In function `main':
conftest.c:79: parse error before `)'
configure:5203: $? = 1
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| #define PACKAGE_URL ""
| #define _LARGE_FILES 1
| #define STDC_HEADERS 1
| #define HAVE_SYS_TYPES_H 1
| #define HAVE_SYS_STAT_H 1
| #define HAVE_STDLIB_H 1
| #define HAVE_STRING_H 1
| #define HAVE_MEMORY_H 1
| #define HAVE_STRINGS_H 1
| #define HAVE_INTTYPES_H 1
| #define HAVE_UNISTD_H 1
| #define WORDS_BIGENDIAN 1
| #define HAVE_SYS_FILE_H 1
| #define HAVE_SYS_PARAM_H 1
| #define HAVE_LIMITS_H 1
| #define HAVE_STDLIB_H 1
| #define HAVE_MALLOC_H 1
| #define HAVE_STRING_H 1
| #define HAVE_UNISTD_H 1
| #define HAVE_STRINGS_H 1
| #define HAVE_SYS_TIME_H 1
| #define HAVE_TIME_H 1
| #define HAVE_SYS_RESOURCE_H 1
| #define HAVE_SYS_STAT_H 1
| #define HAVE_SYS_MMAN_H 1
| #define HAVE_FCNTL_H 1
| #define HAVE_SYS_SYSINFO_H 1
| #define HAVE_SYS_SYSTEMCFG_H 1
| #define HAVE_SYS_WAIT_H 1
| #define TIME_WITH_SYS_TIME 1
| #define SIZEOF_INT 4
| #define UNSIGNED_64BIT_TYPE unsigned long long
| #define HAVE_INTPTR_T 1
| #define HAVE_UINTPTR_T 1
| #define HAVE_UINTPTR_T 1
| /* end confdefs.h.  */
| #include <stdio.h>
| #ifdef HAVE_SYS_TYPES_H
| # include <sys/types.h>
| #endif
| #ifdef HAVE_SYS_STAT_H
| # include <sys/stat.h>
| #endif
| #ifdef STDC_HEADERS
| # include <stdlib.h>
| # include <stddef.h>
| #else
| # ifdef HAVE_STDLIB_H
| #  include <stdlib.h>
| # endif
| #endif
| #ifdef HAVE_STRING_H
| # if !defined STDC_HEADERS && defined HAVE_MEMORY_H
| #  include <memory.h>
| # endif
| # include <string.h>
| #endif
| #ifdef HAVE_STRINGS_H
| # include <strings.h>
| #endif
| #ifdef HAVE_INTTYPES_H
| # include <inttypes.h>
| #endif
| #ifdef HAVE_STDINT_H
| # include <stdint.h>
| #endif
| #ifdef HAVE_UNISTD_H
| # include <unistd.h>
| #endif
| int
| main ()
| {
| if (sizeof ((pid_t)))
|           return 0;
|   ;
|   return 0;
| }
configure:5203: result: yes


Should I attach a copy of the system's sys/types.h header?

[Bug bootstrap/47902] Bootstrap failure: libiberty/regex.c: error: two or more data types in declaration specifiers

[skunk at iskunk dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47902

--- Comment #3 from Daniel Richard G. <skunk at iskunk dot org> 2011-02-28 20:01:51 UTC ---
I played around with this a bit, and found something rather amusing:

    sizeof(pid_t) ..... compiles just fine
    sizeof((pid_t)) ... parse error before `)'

The extra parens do it in. And this is with (an older version of) GCC:

    % gcc -v
    Reading specs from
/usr/bin/../lib/gcc-lib/powerpc-ibm-aix4.3.3.0/2.9-aix51-020209/specs
    gcc version 2.9-aix51-020209

This quirk might also be the cause of bug #47907.

[Bug bootstrap/47902] Bootstrap failure: libiberty/regex.c: error: two or more data types in declaration specifiers

[skunk at iskunk dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47902

--- Comment #4 from Daniel Richard G. <skunk at iskunk dot org> 2011-02-28 21:59:28 UTC ---
Okay, did some more digging.

So I see that the ac_fn_c_check_type function actually tries a test compilation
first with sizeof(foo_t), and then sizeof((foo_t)), and the test succeeds only
if the first succeeds and the latter fails. So this is actually working as it
should---I'd missed that the test log I pasted in shows pid_t being found
successfully.

The real test failure in config.log is as follows:

configure:5203: checking for pid_t
configure:5203:  /tmp/gcc-4.5.2-build/./prev-gcc/xgcc
-B/tmp/gcc-4.5.2-build/./prev-gcc/ -B/opt/tg/powerpc-ibm-aix4.3.2.0/bin/
-B/opt/tg/powerpc-ibm-aix4.3.2.0/bin/ -B/opt/tg/powerpc-ibm-aix4.3.2.0/lib/
-isystem /opt/tg/powerpc-ibm-aix4.3.2.0/include -isystem
/opt/tg/powerpc-ibm-aix4.3.2.0/sys-include    -c -g -O2  conftest.c >&5
In file included from conftest.c:71:0:
/tmp/gcc-4.5.2-build/./prev-gcc/include/stdint.h:72:29: error: conflicting
types for 'int_fast16_t'
/usr/include/sys/inttypes.h:143:18: note: previous declaration of
'int_fast16_t' was here
/tmp/gcc-4.5.2-build/./prev-gcc/include/stdint.h:75:29: error: conflicting
types for 'uint_fast8_t'
/usr/include/sys/inttypes.h:145:18: note: previous declaration of
'uint_fast8_t' was here
/tmp/gcc-4.5.2-build/./prev-gcc/include/stdint.h:76:30: error: conflicting
types for 'uint_fast16_t'
/usr/include/sys/inttypes.h:146:18: note: previous declaration of
'uint_fast16_t' was here
configure:5203: $? = 1

Which is basically bug #47907.

I notice that the test for pid_t fails if HAVE_STDINT_H is #defined, and
succeeds otherwise.

[Bug bootstrap/47902] Bootstrap failure: libiberty/regex.c: error: two or more data types in declaration specifiers

[skunk at iskunk dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47902

Daniel Richard G. <skunk at iskunk dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #5 from Daniel Richard G. <skunk at iskunk dot org> 2012-05-14 22:54:02 UTC ---
This bug appears to be a duplicate of bug 53348.

(The linked bug report is newer, but represents a clearer diagnosis of the
problem, and is filed against version 4.7.0.)

*** This bug has been marked as a duplicate of bug 53348 ***