Python on UNIX now trusts PYTHONHOME unconditionally
Modules/getpath.c:
Landmark changed to os.py.
Setting PYTHONHOME now unconditionally sets sys.prefix
(and sys.exec_prefix). No further checks are done whether the
standard lib can be found in that location or not. This is in
sync with the PC subdir getpath implementations.
PC/getpathp.c:
Landmark changed to os.py.
PC/os2vacpp/getpathp.c:
Landmark changed to os.py.
Note: BAW's checkin on exceptions.c eliminates earlier concerns about
a bogus PYTHONHOME value leading to a core dump. Instead it causes a
useless sys.path and prevents imports.
Lots of typo fixes (a bit too much cut-and-paste in this module)
Aliases removed: attr_on, attr_off, attr_set
Lowercased the names COLOR_PAIR and PAIR_NUMBER
#ifdef's for compiling on Solaris added (need to understand SYSV curses
versions better and generalize this)
Bumped version number bumped to 1.6
that before) in the previous patch has one problem; rint() is not in
the C math library on all platforms (e.g. not for VC++). Make it
conditional on HAVE_RINT.
into. Jim writes:
The core dump was due to a C decrement operation
in a macro invocation in load_pop. (BAD)
I fixed this by moving the decrement outside
the macro call.
I added a comment to load_pop and load_mark
to document the fact that cPickle separates the
unpickling stack into two separate stacks, one for
objects and one for marks.
I also moved some increments out of some macro
calls (PyTuple_SET_ITEM and PyList_SET_ITEM).
This wasn't necessary, but made me feel better. :)
I tested these changes in *my* cPickle, which
doesn't have the new Unicode stuff.
Fix overflow bug in ldexp(x, exp). The 'exp' argument maps to a C int for the
math library call [double ldexp(double, int)], however the 'd'
PyArg_ParseTuple formatter was used to yield a double, which was subsequently
cast to an int. This could overflow.
[GvR: mysteriously, on Solaris 2.7, ldexp(1, 2147483647) returns Inf
while ldexp(1, 2147483646) raises OverflowError; this seems a bug in
the math library (it also takes a real long time to compute the
Inf outcome). Does this point to a bug in the CHECK() macro? It
should have discovered that the result was outside the HUGE_VAL range.]
instead. This seems more robust than returning an Unicode string with
some unconverted charcters in it.
This still doesn't support getting truly binary data out of Tcl, since
we look for the trailing null byte; but the old (pre-Unicode) code did
this too, so apparently there's no need. (Plus, I really don't feel
like finding out how Tcl deals with this in each version.)
1. In Tcl 8.2 and later, use Tcl_NewUnicodeObj() when passing a Python
Unicode object rather than going through UTF-8. (This function
doesn't exist in Tcl 8.1, so there the original UTF-8 code is still
used; in Tcl 8.0 there is no support for Unicode.) This assumes that
Tcl_UniChar is the same thing as Py_UNICODE; a run-time error is
issued if this is not the case.
2. In Tcl 8.1 and later (i.e., whenever Tcl supports Unicode), when a
string returned from Tcl contains bytes with the top bit set, we
assume it is encoded in UTF-8, and decode it into a Unicode string
object.
Notes:
- Passing Unicode strings to Tcl 8.0 does not do the right thing; this
isn't worth fixing.
- When passing an 8-bit string to Tcl 8.1 or later that has bytes with
the top bit set, Tcl tries to interpret it as UTF-8; it seems to fall
back on Latin-1 for non-UTF-8 bytes. I'm not sure what to do about
this besides telling the user to disambiguate such strings by
converting them to Unicode (forcing the user to be explicit about the
encoding).
- Obviously it won't be possible to get binary data out of Tk this
way. Do we need that ability? How to do it?
For more comments, read the patches@python.org archives.
For documentation read the comments in mymalloc.h and objimpl.h.
(This is not exactly what Vladimir posted to the patches list; I've
made a few changes, and Vladimir sent me a fix in private email for a
problem that only occurs in debug mode. I'm also holding back on his
change to main.c, which seems unnecessary to me.)
Checkin 2.131 of posixmodule.c changed os.stat on Windows, so that
"/bin/" type notation (trailing backslash) would work on Windows to
be consistent with Unix.
However, the patch broke the simple case of: os.stat("\\")
This did work in 1.5.2, and obviously should!
This patch addresses this, and restores the correct behaviour.
utime(path, NULL) call, setting the atime and mtime of the file to the
current time. The previous signature utime(path, (atime, mtime)) is
of course still allowed.
This patch is a workaround for Macintosh, where the GUSI I/O library
(time, stat, etc) use the MacOS epoch of 1-Jan-1904 and the MSL C
library (ctime, localtime, etc) uses the (apparently ANSI standard)
epoch of 1-Jan-1900. Python programs see the MacOS epoch and we
convert values when needed.
This patch changes posixmodule.c:execv to
a) check for zero length args (does this to execve, too), raising
ValueError.
b) raises more rational exceptions for various flavours of duff arguments.
I *hate*
TypeError: "illegal argument type for built-in operation"
It has to be one of the most frustrating error messages ever.
socklen_t (unsigned int) for most size parameters. Apparently this is
part of the UNIX 98 standard.
[GvR: the changes to configure.in etc. that I just checked in make
sure that socklen_t is defined everywhere, so I deleted the little
part of Jack's mod to define socklen_t if not in GUSI2. I suppose I
will have to add it to the Windows config.h in a minute.]
"""
Problem description:
Run the following script:
import test.test_cpickle
for x in xrange(1000000):
reload(test.test_cpickle)
Watch Python's memory use go up up and away!
In the course of debugging this I also saw that cPickle is
inconsistent with pickle - if you attempt a pickle.load or pickle.dump
on a closed file, you get a ValueError, whereas the corresponding
cPickle operations give an IOError. Since cPickle is advertised as
being compatible with pickle, I changed these exceptions to match.
"""
Windows), soclose (on OS2), or to close (everywhere else).
Hopefully this fixes a new compilation error that I suddenly get on
Windows because the macro definition for close -> closesocket
apparently was done before including io.h, which contains a prototype
for close. (No idea why this wasn't an error before.)
backslash from the pathname argument to stat() on Windows -- while on
Unix, stat("/bin/") succeeds and does the same thing as stat("/bin"),
on Windows, stat("\\windows\\") fails while stat("\\windows") succeeds.
This modified version of the patch recognizes both / and \.
(This is odd behavior of the MS C library, since
os.listdir("\\windows\\") succeeds!)
The bug is in mmap_read_line_method(), and its loop that searches for
newlines. After the loop reaches EOF, eol is incremented and points
after the end of the memory. This results in readline() method
sometimes picking up and returning a byte after the end of the string.
This is usually a bogus \0, but it could cause SIGSEGV if it's after
the end of the page).
The patch fixes the problem. Also, it uses memchr() for finding a
character, which is in fact the "strnchr" the comment is asking for.
memchr() is already used in Python sources, so there should be no
portability problems.
The Setup.in entry is sort of a lie; it links with -lexpat, but
Expat's Makefile doesn't actually build a libexpat.a. I'll send
Expat's author a patch to do that; if he doesn't accept it, this
rule will have to list Expat's object files (ick!), or have a
comment explaining how to build a .a file.
None in an argument list *terminates* the argument list: further
arguments are *ignored*. This isn't kosher, but too much code relies
on it, implicitly. For example, IDLE was pretty broken.
Reformatted for 8-space tabs and fitted into 80-char lines by GvR.
Mark writes:
* the Win32 version now accepts the same args as the Unix version.
The win32 specific "tag" param is now optional. The end result is
that the exact same test suite runs on Windows (definately a worthy
goal!).
* I changed the error object. All occurences of the error, except
for 1, corresponds to an underlying OS error. This one was changed
to a ValueError (a better error for that condition), and the module
error object is now simply EnvironmentError. All win32 error
routines now call the new Windows specific error handler.
(1) In opendir(), don't call the lock-release macros; we're
manipulating list objects and that shouldn't be done in unlocked
state.
(2) Don't use posix_strint() for chmod() -- the mode_t arg might be a
64 bit int (reported by Nick Maclaren).
This was originally submitted by Martin von Loewis as part of his
Unicode patch; all I did was add special cases for Python int and
float objects and rearrange the object type tests somewhat to speed up
the common cases (string, int, float, tuple, unicode, object).
The attached patch set includes a workaround to get Python with
Unicode compile on BSDI 4.x (courtesy Thomas Wouters; the cause
is a bug in the BSDI wchar.h header file) and Python interfaces
for the MBCS codec donated by Mark Hammond.
Also included are some minor corrections w/r to the docs of
the new "es" and "es#" parser markers (use PyMem_Free() instead
of free(); thanks to Mark Hammond for finding these).
The unicodedata tests are now in a separate file
(test_unicodedata.py) to avoid problems if the module cannot
be found.
a Py_BEGIN_ALLOW_THREADS/Py_END_ALLOW_THREADS block, but it
calls Py_BLOCK_THREADS anyway. The change moves Py_BLOCK_THREADS
to inside the if, so it's only executed when the function
actually returns unexpectedly.
Attached you find an update of the Unicode implementation.
The patch is against the current CVS version. I would appreciate
if someone with CVS checkin permissions could check the changes
in.
The patch contains all bugs and patches sent this week and also
fixes a leak in the codecs code and a bug in the free list code
for Unicode objects (which only shows up when compiling Python
with Py_DEBUG; thanks to MarkH for spotting this one).
This patch fixes 3 small problems.
1) If a map is used which is generated with 'makedbm -a',
the trailing '\0' is now handled correctely.
2) The nis.maps() function skipped the first map in the output list.
3) The library '-lnsl' is added in Setup.in (needed on Linux glibc2 and
Solaris systems. Maybe on other systems too?)
[I note that this still doesn't work when you are using NIS+ --GvR]
This patch allows building the Python 'mpzmodule' under SuSE Linux
without having to install the source package of the GMP-libary.
The gmp-mparam.h seems to be an internal header file. The patch
shouldn't hurt any other platforms.
The same problem (mixed mallocs) exists for the pcre stack.
The buffers md->... are allocated via PyMem_RESIZE in grow_stack(),
while in free_stack() they are released with free() instead of
PyMem_DEL().
The buffers self->regex and self->regex_extra are allocated in
pcre_compile() and pcre_study() via pcre_malloc, but are released
via free() instead of pcre_free.
(e.g. used for ZIP files).
The patch includes code that says:
+ Copyright (C) 1986 Gary S. Brown. You may use this program, or
+ code or tables extracted from it, as desired without restriction.
My interpretation (and Jim's) is that Gary S Brown has no claims under
copyright, patent or other rights or interests. Lawyers might disagree.
Andrew M. Kuchling
Jeremy Hylton
Fred Drake
Barry Warsaw
Guido van Rossum
Greg Ward