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glibc 2.0.95 and egcs



As some have already pointed out, there're some problems with glibc
2.0.95 and libio in egcs.

If you recompile egcs (which is neccessary for c++ development when
upgrading from glibc 2.0.x to glibc 2.1), you'll notice some problems.
You've got to apply the following patch to the current egcs 1.1
version (if you're using egcs 1.0.3a you need also to change the
members of _IO_cookie_io_functions_t in libio/libio.h to use __PMT).
You'll notice some other failures, like:

../../../egcs_1_1_branch/libio/iostream.cc: In method `class ostream & ostream::operator <<(char)':
../../../egcs_1_1_branch/libio/iostream.cc:385: `_pthread_cleanup_push_defer' undeclared (first use this function)

Just add -D_GNU_SOURCE to the CFLAGS, or add a 
#define _GNU_SOURCE 1
at the beginning of the files that fail to compile in libio.

There're some new failures in the testsuite with errors like:
/usr/include/string.h:38: declaration of `memcpy(void *, const void *, unsigned int)' throws different exceptions
<internal>:38: previous declaration here

Just ignore them for now.

If you need c++ and are not confident enough to fix egcs, I wouldn't
advise to update to glibc 2.0.95 for now.  I'm just trying to sort out 
how to fix egcs and the glibc 2.1 snapshot so that both work together
again.  But it might take some time until all patches are integrated.

With the hints given above, I've successfully compiled the current
egcs 1.1 branch - so it's not impossible, just a bit more difficult
than usual.;-)

Andreas


1998-08-03  Andreas Jaeger  <aj@arthur.rhein-neckar.de>

	* libioP.h: Use __PMT in typedefs.
	* strfile.h: Likewise.

Index: libio/libioP.h
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/libio/libioP.h,v
retrieving revision 1.8
diff -u -r1.8 libioP.h
--- libio/libioP.h	1998/02/24 20:09:53	1.8
+++ libio/libioP.h	1998/08/03 19:47:05
@@ -91,20 +91,20 @@
 /* The 'finish' function does any final cleaning up of an _IO_FILE object.
    It does not delete (free) it, but does everything else to finalize it/
    It matches the streambuf::~streambuf virtual destructor.  */
-typedef void (*_IO_finish_t) __P ((_IO_FILE *, int)); /* finalize */
+typedef void (*_IO_finish_t) __PMT ((_IO_FILE *, int)); /* finalize */
 #define _IO_FINISH(FP) JUMP1 (__finish, FP, 0)
 
 /* The 'overflow' hook flushes the buffer.
    The second argument is a character, or EOF.
    It matches the streambuf::overflow virtual function. */
-typedef int (*_IO_overflow_t) __P ((_IO_FILE *, int));
+typedef int (*_IO_overflow_t) __PMT ((_IO_FILE *, int));
 #define _IO_OVERFLOW(FP, CH) JUMP1 (__overflow, FP, CH)
 
 /* The 'underflow' hook tries to fills the get buffer.
    It returns the next character (as an unsigned char) or EOF.  The next
    character remains in the get buffer, and the get position is not changed.
    It matches the streambuf::underflow virtual function. */
-typedef int (*_IO_underflow_t) __P ((_IO_FILE *));
+typedef int (*_IO_underflow_t) __PMT ((_IO_FILE *));
 #define _IO_UNDERFLOW(FP) JUMP0 (__underflow, FP)
 
 /* The 'uflow' hook returns the next character in the input stream
@@ -116,20 +116,20 @@
 
 /* The 'pbackfail' hook handles backing up.
    It matches the streambuf::pbackfail virtual function. */
-typedef int (*_IO_pbackfail_t) __P ((_IO_FILE *, int));
+typedef int (*_IO_pbackfail_t) __PMT ((_IO_FILE *, int));
 #define _IO_PBACKFAIL(FP, CH) JUMP1 (__pbackfail, FP, CH)
 
 /* The 'xsputn' hook writes upto N characters from buffer DATA.
    Returns the number of character actually written.
    It matches the streambuf::xsputn virtual function. */
-typedef _IO_size_t (*_IO_xsputn_t) __P ((_IO_FILE *FP, const void *DATA,
+typedef _IO_size_t (*_IO_xsputn_t) __PMT ((_IO_FILE *FP, const void *DATA,
 					 _IO_size_t N));
 #define _IO_XSPUTN(FP, DATA, N) JUMP2 (__xsputn, FP, DATA, N)
 
 /* The 'xsgetn' hook reads upto N characters into buffer DATA.
    Returns the number of character actually read.
    It matches the streambuf::xsgetn virtual function. */
-typedef _IO_size_t (*_IO_xsgetn_t) __P ((_IO_FILE *FP, void *DATA,
+typedef _IO_size_t (*_IO_xsgetn_t) __PMT ((_IO_FILE *FP, void *DATA,
 					 _IO_size_t N));
 #define _IO_XSGETN(FP, DATA, N) JUMP2 (__xsgetn, FP, DATA, N)
 
@@ -139,10 +139,10 @@
    It matches the streambuf::seekoff virtual function.
    It is also used for the ANSI fseek function. */
 #if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
-typedef _IO_fpos64_t (*_IO_seekoff_t) __P ((_IO_FILE *FP, _IO_off64_t OFF,
+typedef _IO_fpos64_t (*_IO_seekoff_t) __PMT ((_IO_FILE *FP, _IO_off64_t OFF,
 					  int DIR, int MODE));
 #else
-typedef _IO_fpos_t (*_IO_seekoff_t) __P ((_IO_FILE *FP, _IO_off_t OFF,
+typedef _IO_fpos_t (*_IO_seekoff_t) __PMT ((_IO_FILE *FP, _IO_off_t OFF,
 					  int DIR, int MODE));
 #endif
 #define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3 (__seekoff, FP, OFF, DIR, MODE)
@@ -153,27 +153,27 @@
    It is also used for the ANSI fgetpos and fsetpos functions.  */
 /* The _IO_seek_cur and _IO_seek_end options are not allowed. */
 #if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
-typedef _IO_fpos64_t (*_IO_seekpos_t) __P ((_IO_FILE *, _IO_fpos64_t, int));
+typedef _IO_fpos64_t (*_IO_seekpos_t) __PMT ((_IO_FILE *, _IO_fpos64_t, int));
 #else
-typedef _IO_fpos_t (*_IO_seekpos_t) __P ((_IO_FILE *, _IO_fpos_t, int));
+typedef _IO_fpos_t (*_IO_seekpos_t) __PMT ((_IO_FILE *, _IO_fpos_t, int));
 #endif
 #define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2 (__seekpos, FP, POS, FLAGS)
 
 /* The 'setbuf' hook gives a buffer to the file.
    It matches the streambuf::setbuf virtual function. */
-typedef _IO_FILE* (*_IO_setbuf_t) __P ((_IO_FILE *, char *, _IO_ssize_t));
+typedef _IO_FILE* (*_IO_setbuf_t) __PMT ((_IO_FILE *, char *, _IO_ssize_t));
 #define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2 (__setbuf, FP, BUFFER, LENGTH)
 
 /* The 'sync' hook attempts to synchronize the internal data structures
    of the file with the external state.
    It matches the streambuf::sync virtual function. */
-typedef int (*_IO_sync_t) __P ((_IO_FILE *));
+typedef int (*_IO_sync_t) __PMT ((_IO_FILE *));
 #define _IO_SYNC(FP) JUMP0 (__sync, FP)
 
 /* The 'doallocate' hook is used to tell the file to allocate a buffer.
    It matches the streambuf::doallocate virtual function, which is not
    in the ANSI/ISO C++ standard, but is part traditional implementations. */
-typedef int (*_IO_doallocate_t) __P ((_IO_FILE *));
+typedef int (*_IO_doallocate_t) __PMT ((_IO_FILE *));
 #define _IO_DOALLOCATE(FP) JUMP0 (__doallocate, FP)
 
 /* The following four hooks (sysread, syswrite, sysclose, sysseek, and
@@ -191,14 +191,14 @@
    an existing buffer.  It generalizes the Unix read(2) function.
    It matches the streambuf::sys_read virtual function, which is
    specific to this implementation. */
-typedef _IO_ssize_t (*_IO_read_t) __P ((_IO_FILE *, void *, _IO_ssize_t));
+typedef _IO_ssize_t (*_IO_read_t) __PMT ((_IO_FILE *, void *, _IO_ssize_t));
 #define _IO_SYSREAD(FP, DATA, LEN) JUMP2 (__read, FP, DATA, LEN)
 
 /* The 'syswrite' hook is used to write data from an existing buffer
    to an external file.  It generalizes the Unix write(2) function.
    It matches the streambuf::sys_write virtual function, which is
    specific to this implementation. */
-typedef _IO_ssize_t (*_IO_write_t) __P ((_IO_FILE *,const void *,_IO_ssize_t));
+typedef _IO_ssize_t (*_IO_write_t) __PMT ((_IO_FILE *,const void *,_IO_ssize_t));
 #define _IO_SYSWRITE(FP, DATA, LEN) JUMP2 (__write, FP, DATA, LEN)
 
 /* The 'sysseek' hook is used to re-position an external file.
@@ -206,9 +206,9 @@
    It matches the streambuf::sys_seek virtual function, which is
    specific to this implementation. */
 #if defined(_G_IO_IO_FILE_VERSION) && _G_IO_IO_FILE_VERSION == 0x20001
-typedef _IO_fpos64_t (*_IO_seek_t) __P ((_IO_FILE *, _IO_off64_t, int));
+typedef _IO_fpos64_t (*_IO_seek_t) __PMT ((_IO_FILE *, _IO_off64_t, int));
 #else
-typedef _IO_fpos_t (*_IO_seek_t) __P ((_IO_FILE *, _IO_off_t, int));
+typedef _IO_fpos_t (*_IO_seek_t) __PMT ((_IO_FILE *, _IO_off_t, int));
 #endif
 #define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2 (__seek, FP, OFFSET, MODE)
 
@@ -216,26 +216,26 @@
    external file.  It generalizes the Unix close(2) function.
    It matches the streambuf::sys_close virtual function, which is
    specific to this implementation. */
-typedef int (*_IO_close_t) __P ((_IO_FILE *)); /* finalize */
+typedef int (*_IO_close_t) __PMT ((_IO_FILE *)); /* finalize */
 #define _IO_SYSCLOSE(FP) JUMP0 (__close, FP)
 
 /* The 'sysstat' hook is used to get information about an external file
    into a struct stat buffer.  It generalizes the Unix fstat(2) call.
    It matches the streambuf::sys_stat virtual function, which is
    specific to this implementation. */
-typedef int (*_IO_stat_t) __P ((_IO_FILE *, void *));
+typedef int (*_IO_stat_t) __PMT ((_IO_FILE *, void *));
 #define _IO_SYSSTAT(FP, BUF) JUMP1 (__stat, FP, BUF)
 
 #if _G_IO_IO_FILE_VERSION == 0x20001
 /* The 'showmany' hook can be used to get an image how much input is
    available.  In many cases the answer will be 0 which means unknown
    but some cases one can provide real information.  */
-typedef int (*_IO_showmanyc_t) __P ((_IO_FILE *));
+typedef int (*_IO_showmanyc_t) __PMT ((_IO_FILE *));
 #define _IO_SHOWMANYC(FP) JUMP0 (__showmanyc, FP)
 
 /* The 'imbue' hook is used to get information about the currently
    installed locales.  */
-typedef void (*_IO_imbue_t) __P ((_IO_FILE *, void *));
+typedef void (*_IO_imbue_t) __PMT ((_IO_FILE *, void *));
 #define _IO_IMBUE(FP, LOCALE) JUMP1 (__imbue, FP, LOCALE)
 #endif
 
@@ -450,7 +450,7 @@
 			      int __sign_mode, int __fill));
 
 extern _IO_FILE *_IO_list_all;
-extern void (*_IO_cleanup_registration_needed) __P ((void));
+extern void (*_IO_cleanup_registration_needed) __PMT ((void));
 
 #ifndef EOF
 # define EOF (-1)
Index: libio/strfile.h
===================================================================
RCS file: /egcs/carton/cvsfiles/egcs/libio/strfile.h,v
retrieving revision 1.2
diff -u -r1.2 strfile.h
--- libio/strfile.h	1997/09/06 07:43:55	1.2
+++ libio/strfile.h	1998/08/03 19:47:06
@@ -28,8 +28,8 @@
 Merge into  libio.h ?
 #endif
 
-typedef void *(*_IO_alloc_type) __P ((_IO_size_t));
-typedef void (*_IO_free_type) __P ((void*));
+typedef void *(*_IO_alloc_type) __PMT ((_IO_size_t));
+typedef void (*_IO_free_type) __PMT ((void*));
 
 struct _IO_str_fields
 {

-- 
 Andreas Jaeger   aj@arthur.rhein-neckar.de    jaeger@informatik.uni-kl.de
  for pgp-key finger ajaeger@alma.student.uni-kl.de


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