built-in prototypes?

Thread View: gnu.g++.lib.bug

4 messages

[T] Back to Threads [V] Tree View [G] Group Articles

4 total messages Started by Michael Czeiszperger Tue, 01 Sep 1992 19:42

#251

Author: Michael Czeiszperger
Date: Tue, 01 Sep 1992 19:42

32 lines
2102 bytes

Hi --

I'm trying to compile libg++-2.2 with gcc-2.2.2 on a Sun3 running
SunOS4.1.  The problem is, the compiler keeps complaining that the
prototypes in g++-includes that come with libg++ don't match the
built-in prototypes.  I've never heard of built-in prototypes, and
can't find an explanation in the docs anywhere.    I did fix the
include files after compiling gcc using "make fixincludes".

Does anyone have an idea of what's going on?

gcc -g -nostdinc++ -I.. -I. -I./../iostream -I./../g++-include  -c AllocRing.cc
In file included from ./std.h:26, from AllocRing.cc:22:
./../g++-include/string.h:28: declaration of `long unsigned int  strlen (const c
har *)'
<built-in>:0: conflicts with built-in declaration `int  strlen (const char *)'
In file included from ./std.h:28, from AllocRing.cc:22:
./../g++-include/unistd.h:92: conflicting types for `int  geteuid (...)'
/usr/local/lib/gcc-lib/m68k-sun-sunos4.1/2.2.2/include/unistd.h:96: previous dec
laration of `short unsigned int  geteuid (...)'
./../g++-include/unistd.h:93: conflicting types for `int  getegid (...)'
/usr/local/lib/gcc-lib/m68k-sun-sunos4.1/2.2.2/include/unistd.h:95: previous dec
laration of `short unsigned int  getegid (...)'
./../g++-include/unistd.h:94: conflicting types for `int  getgid (..

Thanks awfully much for any pointers, including the much expected "you
didn't compile gcc correctly" !

Michael Czeiszperger         | "II-V-I... to me, this is a hateful progression.
Muscle Fish Consulting       |  In Jazz, they beef it up up by adding extra
czei@musclefish.com          |  partials, but its still the essense of 'bad
Berkeley, CA 94710           |  'white person music.'"  -- Frank Zappa

Re: built-in prototypes?

#253

Author: bothner
Date: Thu, 03 Sep 1992 10:21

14 lines
1118 bytes

./../g++-include/string.h:28: declaration of `long unsigned int  strlen (const char *)'
<built-in>:0: conflicts with built-in declaration `int  strlen (const char *)'

This is because of conflicts in the definition of size_t.
size_t is pre-defined (using the macro SIZE_TYPE) in gcc.
libg++ extracts a definition of size_t from the system header
files (in the script libg++/utils/gen-params).  So basically,
gcc's definition of size_t as int (which contradicts ANSI, but
matches most recent releases of SunOS) does not match your
system's header files.  You could fix gcc (by changing its
definition of SIZE_TYPE).

	--Per Bothner
Cygnus Support     bothner@cygnus.com

Re: built-in prototypes?

#274

Author: Jason Merrill
Date: Fri, 04 Sep 1992 21:11

51 lines
1907 bytes

bothner@cygnus.com writes:

>libg++ extracts a definition of size_t from the system header
>files (in the script libg++/utils/gen-params).  So basically,
>gcc's definition of size_t as int (which contradicts ANSI, but
>matches most recent releases of SunOS) does not match your
>system's header files.  You could fix gcc (by changing its
>definition of SIZE_TYPE).

If you are compiling libg++ with gcc (as I would assume), the size_t
defined in the gcc headers (i.e. stddef.h) should take precedence over the
system headers, I feel.  Thus:

*** /gnu/libg++/libg++/utils/gen-params~	Fri Jun 26 12:29:41 1992
--- /gnu/libg++/libg++/utils/gen-params	Fri Sep  4 14:06:22 1992
***************
*** 107,113
  # using sed to search for typedefs in the output.

  cat >dummy.c <<!EOF!
- #include <sys/types.h>
  #include <stddef.h>
  #include <stdarg.h>
  #include <stdio.h>

--- 107,112 -----
  # using sed to search for typedefs in the output.

  cat >dummy.c <<!EOF!
  #include <stddef.h>
  #include <sys/types.h>
  #include <stdarg.h>
***************
*** 109,114
  cat >dummy.c <<!EOF!
  #include <sys/types.h>
  #include <stddef.h>
  #include <stdarg.h>
  #include <stdio.h>
  #include <time.h>

--- 108,114 -----

  cat >dummy.c <<!EOF!
  #include <stddef.h>
+ #include <sys/types.h>
  #include <stdarg.h>
  #include <stdio.h>
  #include <time.h>
-- 
Fool on a Pedestal

Re: built-in prototypes?

#277

Author: Jason Merrill
Date: Sun, 06 Sep 1992 01:04

13 lines
1074 bytes

In article <1992Sep4.211129.25826@muddcs.claremont.edu> jason@jarthur.claremont.edu (Jason Merrill) writes:

>If you are compiling libg++ with gcc (as I would assume), the size_t
>defined in the gcc headers (i.e. stddef.h) should take precedence over the
>system headers, I feel.

OK, I was wrong.  Since stddef.h says size_t is unsigned long no matter
what SIZE_TYPE was when gcc was compiled, obviously it can't be trusted,
and the system headers should take priority.

--
Jason Merrill
jason@jarthur.claremont.edu

Thread Navigation

This is a paginated view of messages in the thread with full content displayed inline.

Messages are displayed in chronological order, with the original post highlighted in green.

Use pagination controls to navigate through all messages in large threads.

Back to All Threads