head	1.1;
branch	1.1.1;
access;
symbols
	RELENG_8_4:1.1.1.2.0.50
	RELENG_9_1_0_RELEASE:1.1.1.2
	RELENG_9_1:1.1.1.2.0.48
	RELENG_9_1_BP:1.1.1.2
	RELENG_8_3_0_RELEASE:1.1.1.2
	RELENG_8_3:1.1.1.2.0.46
	RELENG_8_3_BP:1.1.1.2
	RELENG_9_0_0_RELEASE:1.1.1.2
	RELENG_9_0:1.1.1.2.0.44
	RELENG_9_0_BP:1.1.1.2
	RELENG_9:1.1.1.2.0.42
	RELENG_9_BP:1.1.1.2
	RELENG_7_4_0_RELEASE:1.1.1.2
	RELENG_8_2_0_RELEASE:1.1.1.2
	RELENG_7_4:1.1.1.2.0.40
	RELENG_7_4_BP:1.1.1.2
	RELENG_8_2:1.1.1.2.0.38
	RELENG_8_2_BP:1.1.1.2
	RELENG_8_1_0_RELEASE:1.1.1.2
	RELENG_8_1:1.1.1.2.0.36
	RELENG_8_1_BP:1.1.1.2
	RELENG_7_3_0_RELEASE:1.1.1.2
	RELENG_7_3:1.1.1.2.0.34
	RELENG_7_3_BP:1.1.1.2
	RELENG_8_0_0_RELEASE:1.1.1.2
	RELENG_8_0:1.1.1.2.0.32
	RELENG_8_0_BP:1.1.1.2
	RELENG_8:1.1.1.2.0.30
	RELENG_8_BP:1.1.1.2
	RELENG_7_2_0_RELEASE:1.1.1.2
	RELENG_7_2:1.1.1.2.0.28
	RELENG_7_2_BP:1.1.1.2
	RELENG_7_1_0_RELEASE:1.1.1.2
	RELENG_6_4_0_RELEASE:1.1.1.2
	RELENG_7_1:1.1.1.2.0.26
	RELENG_7_1_BP:1.1.1.2
	RELENG_6_4:1.1.1.2.0.24
	RELENG_6_4_BP:1.1.1.2
	RELENG_7_0_0_RELEASE:1.1.1.2
	RELENG_6_3_0_RELEASE:1.1.1.2
	RELENG_7_0:1.1.1.2.0.22
	RELENG_7_0_BP:1.1.1.2
	RELENG_6_3:1.1.1.2.0.20
	RELENG_6_3_BP:1.1.1.2
	RELENG_7:1.1.1.2.0.18
	RELENG_7_BP:1.1.1.2
	RELENG_6_2_0_RELEASE:1.1.1.2
	RELENG_6_2:1.1.1.2.0.16
	RELENG_6_2_BP:1.1.1.2
	RELENG_5_5_0_RELEASE:1.1.1.2
	RELENG_5_5:1.1.1.2.0.14
	RELENG_5_5_BP:1.1.1.2
	RELENG_6_1_0_RELEASE:1.1.1.2
	RELENG_6_1:1.1.1.2.0.12
	RELENG_6_1_BP:1.1.1.2
	RELENG_6_0_0_RELEASE:1.1.1.2
	RELENG_6_0:1.1.1.2.0.10
	RELENG_6_0_BP:1.1.1.2
	RELENG_6:1.1.1.2.0.8
	RELENG_6_BP:1.1.1.2
	RELENG_5_4_0_RELEASE:1.1.1.2
	RELENG_5_4:1.1.1.2.0.6
	RELENG_5_4_BP:1.1.1.2
	RELENG_5_3_0_RELEASE:1.1.1.2
	RELENG_5_3:1.1.1.2.0.4
	RELENG_5_3_BP:1.1.1.2
	RELENG_5:1.1.1.2.0.2
	RELENG_5_BP:1.1.1.2
	v6_1_1:1.1.1.2
	RELENG_5_2_1_RELEASE:1.1.1.1
	RELENG_5_2_0_RELEASE:1.1.1.1
	RELENG_5_2:1.1.1.1.0.6
	RELENG_5_2_BP:1.1.1.1
	RELENG_5_1_0_RELEASE:1.1.1.1
	RELENG_5_1:1.1.1.1.0.4
	RELENG_5_1_BP:1.1.1.1
	RELENG_5_0_0_RELEASE:1.1.1.1
	RELENG_5_0:1.1.1.1.0.2
	RELENG_5_0_BP:1.1.1.1
	v5_2_1:1.1.1.1
	anoncvs_gdb_5_2_branch_20020627:1.1.1.1
	FSF:1.1.1;
locks; strict;
comment	@# @;


1.1
date	2002.06.27.23.02.22;	author obrien;	state Exp;
branches
	1.1.1.1;
next	;

1.1.1.1
date	2002.06.27.23.02.22;	author obrien;	state Exp;
branches;
next	1.1.1.2;

1.1.1.2
date	2004.06.20.18.15.09;	author marcel;	state Exp;
branches
	1.1.1.2.50.1;
next	;

1.1.1.2.50.1
date	2004.06.20.18.15.09;	author svnexp;	state dead;
branches;
next	1.1.1.2.50.2;

1.1.1.2.50.2
date	2013.03.28.13.01.04;	author svnexp;	state Exp;
branches;
next	;


desc
@@


1.1
log
@Initial revision
@
text
@
			Known problems in GDB 5.2

		See also: http://www.gnu.org/software/gdb/bugs/


hppa2.0-hp-hpux10.20
--------------------

gdb/487: The top level make files used to build GDB are not compatible
with HP/UX make.  As a workaround, use GNU make.

gdb/486: The HP/UX C compiler defaults to K&R mode but GDB only builds
with an ISO C compiler.  The top level configuration incorrectly sets
CC to `cc' instead of `cc -Ae'.  As a workaround, the correct compiler
can be specified as part of the configuration vis:

    $  'CC=cc -Ae' ./configure


s390*-*-*
---------

gdb/513: GDB does not build on s390 GNU/Linux.  The problem should be
fixed in more recent sources.


i386-*-freebsd4.4*
------------------

gdb/455: GDB doesn't build on a FreeBSD 4.4-STABLE system.  The
problem is still being investigated.
@


1.1.1.1
log
@Vendor import of GDB 5.2.
These bits are taken from the FSF gdb_5_2-branch anoncvs repo
on 27-June-2002 12:01:00 EDT.
@
text
@@


1.1.1.2
log
@Import of GDB version 6.1.1 (stripped; see FREEBSD-Xlist rev. 1.6).
@
text
@d2 1
a2 1
			Known problems in GDB 6.1
d7 2
a8 1
*** Build problems
d10 2
a11 1
build/1458: comple failed on hpux11
d13 4
a16 3
GDB 6.1 is known to have build problems on HP/UX 11.00 using the
vendor supplied compilers (GDB does build on HP/UX 11.11, and using
GCC).
d18 1
a18 1
*** Misc
a19 1
gdb/1560: Control-C does not always interrupt GDB.
d21 2
a22 4
When GDB is busy processing a command which takes a long time to
complete, hitting Control-C does not have the expected effect.
The command execution is not aborted, and the "QUIT" message confirming
the abortion is displayed only after the command has been completed.
d24 2
a25 1
*** C++ support
a26 1
gdb/931: GDB could be more generous when reading types C++ templates on input
d28 2
a29 3
When the user types a template, GDB frequently requires the type to be
typed in a certain way (e.g. "const char*" as opposed to "const char *"
or "char const *" or "char const*").
d31 2
a32 82
gdb/1512: no canonical way to output names of C++ types

We currently don't have any canonical way to output names of C++ types.
E.g. "const char *" versus "char const *"; more subtleties arise when
dealing with templates.

gdb/1516: [regression] local classes, gcc 2.95.3, dwarf-2

With gcc 2.95.3 and the dwarf-2 debugging format, classes which are
defined locally to a function include the demangled name of the function
as part of their name.  For example, if a function "foobar" contains a
local class definition "Local", gdb will say that the name of the class
type is "foobar__Fi.0:Local".

This applies only to classes where the class type is defined inside a
function, not to variables defined with types that are defined somewhere
outside any function (which most types are).

gdb/1588: names of c++ nested types in casts must be enclosed in quotes

You must type
  (gdb) print ('Foo::Bar') x
or
  (gdb) print ('Foo::Bar' *) y
instead of
  (gdb) print (Foo::Bar) x
or
  (gdb) print (Foo::Bar *) y
respectively.

gdb/1091: Constructor breakpoints ignored
gdb/1193: g++ 3.3 creates multiple constructors: gdb 5.3 can't set breakpoints

When gcc 3.x compiles a C++ constructor or C++ destructor, it generates
2 or 3 different versions of the object code.  These versions have
unique mangled names (they have to, in order for linking to work), but
they have identical source code names, which leads to a great deal of
confusion.  Specifically, if you set a breakpoint in a constructor or a
destructor, gdb will put a breakpoint in one of the versions, but your
program may execute the other version.  This makes it impossible to set
breakpoints reliably in constructors or destructors.

gcc 3.x generates these multiple object code functions in order to
implement virtual base classes.  gcc 2.x generated just one object code
function with a hidden parameter, but gcc 3.x conforms to a multi-vendor
ABI for C++ which requires multiple object code functions.

*** Stack backtraces

GDB's core code base has been updated to use a new backtrace
mechanism.  This mechanism makes it possible to support new features
such DWARF 2 Call Frame Information (which in turn makes possible
backtraces through optimized code).

Since this code is new, it is known to still have a few problems:

gdb/1505: [regression] gdb prints a bad backtrace for a thread

When backtracing a thread, gdb does not stop when it reaches the
outermost frame, instead continuing until it hits garbage.  This is
sensitive to the operating system and thread library.

hppa*-*-*
mips*-*-*

The MIPS and HPPA backtrace code has only very recently been updated
to use GDB's new frame mechanism.  At present there are still a few
problems, in particular backtraces through signal handlers do not
work.

People encountering problems with these architectures should consult
GDB's web pages and mailing lists (http://www.gnu.org/software/gdb/)
to see if there are updates.

powerpc*-*-*

PowerPC architecture support, in 6.1, does not use the new frame code.

Fortunately, PowerPC architecture support, in GDB's mainline sources,
have been updated.  People encountering problems should consider
downloading a more current snapshot of GDB
(http://www.gnu.org/software/gdb/current/).
@


1.1.1.2.50.1
log
@file PROBLEMS was added on branch RELENG_8_4 on 2013-03-28 13:01:04 +0000
@
text
@d1 113
@


1.1.1.2.50.2
log
@## SVN ## Exported commit - http://svnweb.freebsd.org/changeset/base/248810
## SVN ## CVS IS DEPRECATED: http://wiki.freebsd.org/CvsIsDeprecated
@
text
@a0 113

			Known problems in GDB 6.1

		See also: http://www.gnu.org/software/gdb/bugs/


*** Build problems

build/1458: comple failed on hpux11

GDB 6.1 is known to have build problems on HP/UX 11.00 using the
vendor supplied compilers (GDB does build on HP/UX 11.11, and using
GCC).

*** Misc

gdb/1560: Control-C does not always interrupt GDB.

When GDB is busy processing a command which takes a long time to
complete, hitting Control-C does not have the expected effect.
The command execution is not aborted, and the "QUIT" message confirming
the abortion is displayed only after the command has been completed.

*** C++ support

gdb/931: GDB could be more generous when reading types C++ templates on input

When the user types a template, GDB frequently requires the type to be
typed in a certain way (e.g. "const char*" as opposed to "const char *"
or "char const *" or "char const*").

gdb/1512: no canonical way to output names of C++ types

We currently don't have any canonical way to output names of C++ types.
E.g. "const char *" versus "char const *"; more subtleties arise when
dealing with templates.

gdb/1516: [regression] local classes, gcc 2.95.3, dwarf-2

With gcc 2.95.3 and the dwarf-2 debugging format, classes which are
defined locally to a function include the demangled name of the function
as part of their name.  For example, if a function "foobar" contains a
local class definition "Local", gdb will say that the name of the class
type is "foobar__Fi.0:Local".

This applies only to classes where the class type is defined inside a
function, not to variables defined with types that are defined somewhere
outside any function (which most types are).

gdb/1588: names of c++ nested types in casts must be enclosed in quotes

You must type
  (gdb) print ('Foo::Bar') x
or
  (gdb) print ('Foo::Bar' *) y
instead of
  (gdb) print (Foo::Bar) x
or
  (gdb) print (Foo::Bar *) y
respectively.

gdb/1091: Constructor breakpoints ignored
gdb/1193: g++ 3.3 creates multiple constructors: gdb 5.3 can't set breakpoints

When gcc 3.x compiles a C++ constructor or C++ destructor, it generates
2 or 3 different versions of the object code.  These versions have
unique mangled names (they have to, in order for linking to work), but
they have identical source code names, which leads to a great deal of
confusion.  Specifically, if you set a breakpoint in a constructor or a
destructor, gdb will put a breakpoint in one of the versions, but your
program may execute the other version.  This makes it impossible to set
breakpoints reliably in constructors or destructors.

gcc 3.x generates these multiple object code functions in order to
implement virtual base classes.  gcc 2.x generated just one object code
function with a hidden parameter, but gcc 3.x conforms to a multi-vendor
ABI for C++ which requires multiple object code functions.

*** Stack backtraces

GDB's core code base has been updated to use a new backtrace
mechanism.  This mechanism makes it possible to support new features
such DWARF 2 Call Frame Information (which in turn makes possible
backtraces through optimized code).

Since this code is new, it is known to still have a few problems:

gdb/1505: [regression] gdb prints a bad backtrace for a thread

When backtracing a thread, gdb does not stop when it reaches the
outermost frame, instead continuing until it hits garbage.  This is
sensitive to the operating system and thread library.

hppa*-*-*
mips*-*-*

The MIPS and HPPA backtrace code has only very recently been updated
to use GDB's new frame mechanism.  At present there are still a few
problems, in particular backtraces through signal handlers do not
work.

People encountering problems with these architectures should consult
GDB's web pages and mailing lists (http://www.gnu.org/software/gdb/)
to see if there are updates.

powerpc*-*-*

PowerPC architecture support, in 6.1, does not use the new frame code.

Fortunately, PowerPC architecture support, in GDB's mainline sources,
have been updated.  People encountering problems should consider
downloading a more current snapshot of GDB
(http://www.gnu.org/software/gdb/current/).
@


