Commit Graph

298 Commits

Author SHA1 Message Date
Neal Norwitz 6b4953fd3d Check returned pointer is valid.
Klocwork #233
2006-08-12 02:06:34 +00:00
Neal Norwitz b59d08c2fb Fix more memory allocation issues found with failmalloc. 2006-07-22 16:20:49 +00:00
Neal Norwitz d12bd012a6 Handle more memory allocation failures without crashing. 2006-07-21 07:59:47 +00:00
Neal Norwitz a5e4f22bfb Reported by Klocwork #151.
v2 can be NULL if exception2 is NULL.  I don't think that condition can happen,
but I'm not sure it can't either.  Now the code will protect against either
being NULL.
2006-07-17 00:59:04 +00:00
Martin v. Löwis 0e8bd7e1cc Patch #1495999: Part two of Windows CE changes.
- update header checks, using autoconf
- provide dummies for getenv, environ, and GetVersion
- adjust MSC_VER check in socketmodule.c
2006-06-10 12:23:46 +00:00
Tim Peters 5e9d6cfbda PyErr_Display(), PyErr_WriteUnraisable(): Coverity found a cut-and-paste
bug in both:  `className` was referenced before being checked for NULL.
2006-05-28 10:41:29 +00:00
Richard Jones 7b9558d37d Conversion of exceptions over from faked-up classes to new-style C types. 2006-05-27 12:29:24 +00:00
Thomas Heller 1b04664eab Change those parts of the Python-api that were functions in 2.4, and
are now macros to exported functions again.

Fixes [ 1465834 ] bdist_wininst preinstall script support is broken in 2.5a1.
2006-04-18 18:51:06 +00:00
Martin v. Löwis 45294a9562 Remove types from type_list if they have no objects
and unlist_types_without_objects is set.
Give dump_counts a FILE* argument.
2006-04-18 06:24:08 +00:00
Anthony Baxter ac6bd46d5c spread the extern "C" { } magic pixie dust around. Python itself builds now
using a C++ compiler. Still lots and lots of errors in the modules built by
setup.py, and a bunch of warnings from g++ in the core.
2006-04-13 02:06:09 +00:00
Armin Rigo e170937af6 Ignore the references to the dummy objects used as deleted keys
in dicts and sets when computing the total number of references.
2006-04-12 17:06:05 +00:00
Martin v. Löwis ea62d2535f Bug #1421664: Set sys.stderr.encoding 2006-04-03 10:56:49 +00:00
Tim Peters 62e97f023b In format strings slinging Py_ssize_t, unconditionally
interpolate PY_FORMAT_SIZE_T instead of #if'ing on
MS_WIN64.
2006-03-28 21:44:32 +00:00
Tim Peters c9d78aa470 Years in the making.
objimpl.h, pymem.h:  Stop mapping PyMem_{Del, DEL} and PyMem_{Free, FREE}
to PyObject_{Free, FREE} in a release build.  They're aliases for the
system free() now.

_subprocess.c/sp_handle_dealloc():  Since the memory was originally
obtained via PyObject_NEW, it must be released via PyObject_FREE (or
_DEL).

pythonrun.c, tokenizer.c, parsermodule.c:  I lost count of the number of
PyObject vs PyMem mismatches in these -- it's like the specific
function called at each site was picked at random, sometimes even with
memory obtained via PyMem getting released via PyObject.  Changed most
to use PyObject uniformly, since the blobs allocated are predictably
small in most cases, and obmalloc is generally faster than system
mallocs then.

If extension modules in real life prove as sloppy as Python's front
end, we'll have to revert the objimpl.h + pymem.h part of this patch.
Note that no problems will show up in a debug build (all calls still go
thru obmalloc then). Problems will show up only in a release build, most
likely segfaults.
2006-03-26 23:27:58 +00:00
Guido van Rossum 9d7855076a Address an coverity issue. Coverity was complaining about a line that's fine,
but an earlier line checked for v != NULL unnecessarily.
2006-03-07 18:31:44 +00:00
Neal Norwitz f2e0c45492 Fix warnings on x86 (32-bit). 2006-03-06 23:31:27 +00:00
Martin v. Löwis 99b93c2824 Use %Id for size_t-ish things on Win64. 2006-03-05 05:33:54 +00:00
Neal Norwitz 4281cef205 Use Py_ssize_t for _Py_RefTotal.
I tried to handle Win64 properly, but please review.
2006-03-04 19:58:13 +00:00
Neal Norwitz 9589ee276a Tabify 2006-03-04 19:01:22 +00:00
Neal Norwitz e92fba0a12 Get rid of run_err_mod(). It was only used in two places.
One place it wasn't necessary since mod was already checked.
Inline the check that mod != NULL for the other use.
2006-03-04 18:52:26 +00:00
Brett Cannon 2e63b73a2c Fix refleak in PyErr_Display(). 2006-03-02 18:34:57 +00:00
Martin v. Löwis 056a69cba6 Reconst parameters that lost their const in the AST merge. 2006-03-01 16:55:42 +00:00
Brett Cannon bf36409e2a PEP 352 implementation. Creates a new base class, BaseException, which has an
added message attribute compared to the previous version of Exception.  It is
also a new-style class, making all exceptions now new-style.  KeyboardInterrupt
and SystemExit inherit from BaseException directly.  String exceptions now
raise DeprecationWarning.

Applies patch 1104669, and closes bugs 1012952 and 518846.
2006-03-01 04:25:17 +00:00
Thomas Wouters 34aa7ba114 from __future__ import with_statement addon for 'with', mostly written by
Neal.
2006-02-28 19:02:24 +00:00
Martin v. Löwis 2b366e41c3 Check whether there are flags. 2006-02-26 22:12:35 +00:00
Martin v. Löwis bd260da900 Generate code to recursively copy an AST into
a tree of Python objects. Expose this through compile().
2006-02-26 19:42:26 +00:00
Martin v. Löwis 18e165558b Merge ssize_t branch. 2006-02-15 17:27:45 +00:00
Neal Norwitz db83eb3170 Fix Bug #1378022, UTF-8 files with a leading BOM crashed the interpreter.
Needs backport.
2005-12-18 05:29:30 +00:00
Neal Norwitz adb69fcdff Merge from ast-arena. This reduces the code in Python/ast.c by ~300 lines,
simplifies a lot of error handling code, and fixes many memory leaks.
2005-12-17 20:54:49 +00:00
Martin v. Löwis b45b315855 Patch #1350409: Port signal handling to VS 2005. 2005-11-28 17:34:23 +00:00
Jeremy Hylton 3e0055f8c6 Merge ast-branch to head
This change implements a new bytecode compiler, based on a
transformation of the parse tree to an abstract syntax defined in
Parser/Python.asdl.

The compiler implementation is not complete, but it is in stable
enough shape to run the entire test suite excepting two disabled
tests.
2005-10-20 19:59:25 +00:00
Neal Norwitz 40d3781416 - Fix segfault with invalid coding.
- SF Bug #772896, unknown encoding results in MemoryError, which is not helpful

I will only backport the segfault fix.  I'll let Anthony decide if he wants
the other changes backported.  I will do the backport if asked.
2005-10-02 01:48:49 +00:00
Martin v. Löwis d35edda682 Forward UnicodeDecodeError into SyntaxError for source encoding errors.
Will backport to 2.4.
2005-08-24 08:39:24 +00:00
Raymond Hettinger d794666048 * Improve code for the empty frozenset singleton:
- Handle both frozenset() and frozenset([]).
  - Do not use singleton for frozenset subclasses.
  - Finalize the singleton.
  - Add test cases.
* Factor-out set_update_internal() from set_update().  Simplifies the
  code for several internal callers.
* Factor constant expressions out of loop in set_merge_internal().
* Minor comment touch-ups.
2005-08-01 21:39:29 +00:00
Michael W. Hudson ba283e2b7f This is my patch:
[ 1181301 ] make float packing copy bytes when they can

which hasn't been reviewed, despite numerous threats to check it in
anyway if noone reviews it.  Please read the diff on the checkin list,
at least!

The basic idea is to examine the bytes of some 'probe values' to see if
the current platform is a IEEE 754-ish platform, and if so
_PyFloat_{Pack,Unpack}{4,8} just copy bytes around.

The rest is hair for testing, and tests.
2005-05-27 15:23:20 +00:00
Anthony Baxter 12b6f6cac7 Move exception finalisation later in the shutdown process - this
fixes the crash seen in bug #1165761
2005-03-29 13:36:16 +00:00
Martin v. Löwis 4bf108d74f Patch #802188: better parser error message for non-EOL following line cont. 2005-03-03 11:45:45 +00:00
Anthony Baxter 9ceaa72ebe Patch #975056 - fixes for restartable signals on *BSD. In addition,
a few remaining calls to signal() were converted to PyOS_setsig().
2004-10-13 14:48:50 +00:00
Tim Peters 7f468f29f4 SF patch 1044089: New C API function PyEval_ThreadsInitialized(), by Nick
Coghlan, for determining whether PyEval_InitThreads() has been called.
Also purged the undocumented+unused _PyThread_Started int.
2004-10-11 02:40:51 +00:00
Raymond Hettinger fb09f0e85c Finalize the freelist of list objects. 2004-10-07 03:58:07 +00:00
Martin v. Löwis 336e85f56a Patch #900727: Add Py_InitializeEx to allow embedding without signals. 2004-08-19 11:31:58 +00:00
Martin v. Löwis c2632a5c34 Patch #984714: Properly diagnose E_DECODE errors.
Backported to 2.3.
2004-07-21 05:35:02 +00:00
Michael W. Hudson 30ea2f223f This closes patch:
[ 960406 ] unblock signals in threads

although the changes do not correspond exactly to any patch attached to
that report.

Non-main threads no longer have all signals masked.

A different interface to readline is used.

The handling of signals inside calls to PyOS_Readline is now rather
different.

These changes are all a bit scary!  Review and cross-platform testing
much appreciated.
2004-07-07 17:44:12 +00:00
Nicholas Bastin e5662aedef Changed random calls to PyThreadState_Get() to use the macro 2004-03-24 22:22:12 +00:00
Armin Rigo 5d2c68359b Lost reference. 2004-03-22 20:16:58 +00:00
Skip Montanaro 7befb9966e remove support for missing ANSI C header files (limits.h, stddef.h, etc). 2004-02-10 16:50:21 +00:00
Tim Peters 1d7323e4e7 Py_Finalize(): disabled the second call of cyclic gc, and added extensive
comments about why both calls to cyclic gc here can cause problems.

I'll backport to 2.3 maint.  Since the calls were introduced in 2.3,
that will be the end of it.
2003-12-01 21:35:27 +00:00
Jack Jansen eddc1449ba Getting rid of all the code inside #ifdef macintosh too. 2003-11-20 01:44:59 +00:00
Jack Jansen fb2765666f Getting rid of support for the ancient Apple MPW compiler. 2003-11-19 15:24:47 +00:00
Martin v. Löwis f56d015a71 Patch #804543: strdup saved locales. Backported to 2.3. 2003-11-13 07:43:21 +00:00
Raymond Hettinger 8ae4689657 Simplify and speedup uses of Py_BuildValue():
* Py_BuildValue("(OOO)",a,b,c)  -->  PyTuple_Pack(3,a,b,c)
* Py_BuildValue("()",a)         -->  PyTuple_New(0)
* Py_BuildValue("O", a)         -->  Py_INCREF(a)
2003-10-12 19:09:37 +00:00
Michael W. Hudson 68debc935b Fix refcounting and cut & paste error (?) in last checkin.
This should go onto release23-maint, too.
2003-08-11 12:20:24 +00:00
Martin v. Löwis a2c17c5820 Move initialization of sys.std{in,out}.encoding to Py_Initialize.
Verify that the encoding actually exists. Fixes #775985.
Will backport to 2.3.
2003-08-09 09:47:11 +00:00
Mark Hammond 5f4e8ca376 Correct previous patch looking for warnings module: sys.modules, not
sys.__modules__.
2003-07-16 01:54:38 +00:00
Mark Hammond edd07737d7 Fix [ 771097 ] frozen programs fail due to implicit import of "warnings".
If the initial import of warnings fails, clear the error.  When the module
is actually needed, if the original import failed, see if it has managed
to find its way to sys.modules yet and if so, remember it.
2003-07-15 23:03:55 +00:00
Mark Hammond 6cb9029a22 PyGILState cleanup was too early - destructors called via module cleanup may use the API. 2003-04-22 11:18:00 +00:00
Tim Peters cf615b5275 handle_system_exit(): This leaked the current exception info, in
particular leaving the traceback object (and everything reachable
from it) alive throughout shutdown.  The patch is mostly from Guido.

Bugfix candidate.
2003-04-19 18:47:02 +00:00
Mark Hammond 8d98d2cb95 New PyGILState_ API - implements pep 311, from patch 684256. 2003-04-19 15:41:53 +00:00
Tim Peters 269b2a6797 _Py_PrintReferences(): Changed to print object address at start of each
new line.

New pvt API function _Py_PrintReferenceAddresses():  Prints only the
addresses and refcnts of the live objects.  This is always safe to call,
because it has no dependence on Python's C API.

Py_Finalize():  If envar PYTHONDUMPREFS is set, call (the new)
_Py_PrintReferenceAddresses() right before dumping final pymalloc stats.
We can't print the reprs of the objects here because too much of the
interpreter has been shut down.  You need to correlate the addresses
displayed here with the object reprs printed by the earlier
PYTHONDUMPREFS call to _Py_PrintReferences().
2003-04-17 19:52:29 +00:00
Guido van Rossum e13ddc9ec8 - New C API PyGC_Collect(), same as calling gc.collect().
- Call this in Py_Finalize().
- Expand the Misc/NEWS text on PY_LONG_LONG.
2003-04-17 17:29:22 +00:00
Guido van Rossum 66ebd91244 A missing piece of the PEP 269 patch: add PyParser_SetError(), a
wrapper around err_input().
2003-04-17 16:02:26 +00:00
Tim Peters d08e3824d4 Trimmed trailing whitespace. 2003-04-17 15:24:21 +00:00
Tim Peters 9cf25ce3a0 Py_Finalize(): Reverted recent changes that tried to move the
PYTHONDUMPREFS output after most teardown.  Attempts to use
PYTHONDUMPREFS with the Zope3 test suite died with Py_FatalError(),
since _Py_PrintReferences() can end up executing arbitrary Python code
(for objects that override __repr__), and that requires an intact
interpreter.
2003-04-17 15:21:01 +00:00
Guido van Rossum 0fc8f00252 - pythunrun.c, Py_Finalize(): move the call to _Py_PrintReferences()
even farther down, to just before the call to
  _PyObject_DebugMallocStats().  This required the following changes:

- pystate.c, PyThreadState_GetDict(): changed not to raise an
  exception or issue a fatal error when no current thread state is
  available, but simply return NULL without raising an exception
  (ever).

- object.c, Py_ReprEnter(): when PyThreadState_GetDict() returns NULL,
  don't raise an exception but return 0.  This means that when
  printing a container that's recursive, printing will go on and on
  and on.  But that shouldn't happen in the case we care about (see
  first bullet).

- Updated Misc/NEWS and Doc/api/init.tex to reflect changes to
  PyThreadState_GetDict() definition.
2003-04-15 15:12:39 +00:00
Guido van Rossum d922fa46ce Move the call to _Py_PrintReferences() a bit further down. This
prevents it from showing stuff (like codec state) that is cleared when
the interpreter state is cleared.
2003-04-15 14:10:09 +00:00
Neal Norwitz 5c16c7b014 Move declaration of enc to scope where it is used 2003-04-10 21:53:14 +00:00
Gustavo Niemeyer 5ddd4c3f77 Fixed SF bug #663074. The codec system was using global static
variables to store internal data. As a result, any atempts to use the
unicode system with multiple active interpreters, or successive
interpreter executions, would fail.

Now that information is stored into members of the PyInterpreterState
structure.
2003-03-19 00:35:36 +00:00
Fred Drake 6a9a3292f5 Declare all variables at the start of their scope. 2003-03-05 17:31:21 +00:00
Martin v. Löwis 73d538b9c6 Always initialize Py_FileSystemDefaultEncoding on Unix in Py_Initialize,
and not as a side effect of setlocale. Expose it as sys.getfilesystemencoding.
Adjust test case.
2003-03-05 15:13:47 +00:00
Just van Rossum 5bfba3aeb9 Addendum to #683658:
import warnings.py _after_ site.py has run. This ensures that site.py
is again the first .py to be imported, giving it back full control over
sys.path.
2003-02-25 20:25:12 +00:00
Mark Hammond a43fd0c899 Fix bug 683658 - PyErr_Warn may cause import deadlock. 2003-02-19 00:33:33 +00:00
Guido van Rossum 4b499dd3fb - Finally fixed the bug in compile() and exec where a string ending
with an indented code block but no newline would raise SyntaxError.
  This would have been a four-line change in parsetok.c...  Except
  codeop.py depends on this behavior, so a compilation flag had to be
  invented that causes the tokenizer to revert to the old behavior;
  this required extra changes to 2 .h files, 2 .c files, and 2 .py
  files.  (Fixes SF bug #501622.)
2003-02-13 22:07:59 +00:00
Jack Jansen a038270590 MacPython-OS9 has had an abort() function for quite a while now, so there's no reason to stall in an endless loop, just call abort() on a fatal error. 2003-01-24 16:17:18 +00:00
Martin v. Löwis d7ceb222bd Patch #671459: Invoke import hooks in Py_NewInterpreter. 2003-01-22 09:00:38 +00:00
Neal Norwitz b2501f4cd1 Since the *_Init() are private, prefix with _, suggested by Skip 2002-12-31 03:42:13 +00:00
Neal Norwitz c91ed400e0 SF #561244, Micro optimizations
Initialize the small integers and __builtins__ in startup.
This removes some if conditions.
Change XDECREF to DECREF for values which shouldn't be NULL.
2002-12-30 22:29:22 +00:00
Just van Rossum 52e14d640b PEP 302 + zipimport:
- new import hooks in import.c, exposed in the sys module
- new module called 'zipimport'
- various changes to allow bootstrapping from zip files

I hope I didn't break the Windows build (or anything else for that
matter), but then again, it's been sitting on sf long enough...

Regarding the latest discussions on python-dev: zipimport sets
pkg.__path__ as specified in PEP 273, and likewise, sys.path item such as
/path/to/Archive.zip/subdir/ are supported again.
2002-12-30 22:08:05 +00:00
Jack Jansen 72f3b7a5de Added missing casts. 2002-12-13 15:23:10 +00:00
Martin v. Löwis 95292d6caa Constify filenames and scripts. Fixes #651362. 2002-12-11 14:04:59 +00:00
Neil Schemenauer 89350a41b9 Remove _Py_ResetReferences. Fixes bug #529750 "Circular reference makes
Py_Init crash".  refchain cannot be cleared because objects can live across
Py_Finalize() and Py_Initialize() if they are kept alive by circular
references.
2002-11-17 17:52:44 +00:00
Fred Drake 8ed0204bc9 If we have a filename and __main__.__file__ hasn't already been set,
set it.
Closes SF issue #624729.
2002-10-17 21:24:58 +00:00
Tim Peters 92e4dd8657 s/_alloca/alloca/g; Windows doesn't need the former, at least not unless
__STDC__ is defined (or something like that ...).
2002-10-05 01:47:34 +00:00
Skip Montanaro 118ec70ea2 provide less mysterious error messages when seeing end-of-line in
single-quoted strings or end-of-file in triple-quoted strings.
closes patch 586561.
2002-08-15 01:20:16 +00:00
Martin v. Löwis 00f1e3f5a5 Patch #534304: Implement phase 1 of PEP 263. 2002-08-04 17:29:52 +00:00
Tim Peters 34b2569327 _Py_AskYesNo(): Removed this function. It was defined only in a
Py_TRACE_REFS build, but wasn't referenced.
2002-07-09 18:22:55 +00:00
Thomas Heller 6b17abf6c0 Fix SF Bug 564931: compile() traceback must include filename. 2002-07-09 09:23:27 +00:00
Tim Peters 7c321a80f9 The Py_REF_DEBUG/COUNT_ALLOCS/Py_TRACE_REFS macro minefield: added
more trivial lexical helper macros so that uses of these guys expand
to nothing at all when they're not enabled.  This should help sub-
standard compilers that can't do a good job of optimizing away the
previous "(void)0" expressions.

Py_DECREF:  There's only one definition of this now.  Yay!  That
was that last one in the family defined multiple times in an #ifdef
maze.

Py_FatalError():  Changed the char* signature to const char*.

_Py_NegativeRefcount():  New helper function for the Py_REF_DEBUG
expansion of Py_DECREF.  Calling an external function cuts down on
the volume of generated code.  The previous inline expansion of abort()
didn't work as intended on Windows (the program often kept going, and
the error msg scrolled off the screen unseen).  _Py_NegativeRefcount
calls Py_FatalError instead, which captures our best knowledge of
how to abort effectively across platforms.
2002-07-09 02:57:01 +00:00
Martin v. Löwis 6238d2b024 Patch #569753: Remove support for WIN16.
Rename all occurrences of MS_WIN32 to MS_WINDOWS.
2002-06-30 15:26:10 +00:00
Jeremy Hylton 1b0bf9b761 Ignore SIGXFSZ.
The SIGXFSZ signal is sent when the maximum file size limit is
exceeded (RLIMIT_FSIZE).  Apparently, it is also sent when the 2GB
file limit is reached on platforms without large file support.

The default action for SIGXFSZ is to terminate the process and dump
core.  When it is ignored, the system call that caused the limit to be
exceeded returns an error and sets errno to EFBIG.  Python
always checks errno on I/O syscalls, so there is nothing to do with
the signal.
2002-04-23 20:31:01 +00:00
Tim Peters 0e871188e8 _PyObject_DebugDumpStats: renamed to _PyObject_DebugMallocStats.
Added code to call this when PYMALLOC_DEBUG is enabled, and envar
PYTHONMALLOCSTATS is set, whenever a new arena is obtained and once
late in the Python shutdown process.
2002-04-13 08:29:14 +00:00
Marc-André Lemburg 95de5c1631 Move Unicode finalization further down in the chain.
Fixes bug #525620.
2002-04-08 08:19:36 +00:00
Neal Norwitz 7829335763 Get rid of another use of PyArg_Parse() 2002-04-01 01:41:20 +00:00
Neil Schemenauer c24ea08644 Disable the parser hacks that enabled the "yield" keyword using a future
statement.
2002-03-22 23:53:36 +00:00
Martin v. Löwis cfeb3b6ab8 Patch #50002: Display line information for bad \x escapes:
- recognize "SyntaxError"s by the print_file_and_line attribute.
- add the syntaxerror attributes to all exceptions in compile.c.
Fixes #221791
2002-03-03 21:30:27 +00:00
Martin v. Löwis cdc4451222 Include <unistd.h> in Python.h. Fixes #500924. 2002-01-12 11:05:12 +00:00
Jeremy Hylton 0702858d73 Missing DECREFs when exception is raised in sys.excepthook.
Bug fix candidate for 2.1 branch.

(I imagine the other recent leak patches are bug fix candidates, too,
but I forgot to mark mine as such.)
2001-12-07 15:35:35 +00:00
Tim Peters 3caca2326e SF bug #488514: -Qnew needs work
Big Hammer to implement -Qnew as PEP 238 says it should work (a global
option affecting all instances of "/").

pydebug.h, main.c, pythonrun.c:  define a private _Py_QnewFlag flag, true
iff -Qnew is passed on the command line.  This should go away (as the
comments say) when true division becomes The Rule.  This is
deliberately not exposed to runtime inspection or modification:  it's
a one-way one-shot switch to pretend you're using Python 3.

ceval.c:  when _Py_QnewFlag is set, treat BINARY_DIVIDE as
BINARY_TRUE_DIVIDE.

test_{descr, generators, zipfile}.py:  fiddle so these pass under
-Qnew too.  This was just a matter of s!/!//! in test_generators and
test_zipfile.  test_descr was trickier, as testbinop() is passed
assumptions that "/" is the same as calling a "__div__" method; put
a temporary hack there to call "__truediv__" instead when the method
name is "__div__" and 1/2 evaluates to 0.5.

Three standard tests still fail under -Qnew (on Windows; somebody
please try the Linux tests with -Qnew too!  Linux runs a whole bunch
of tests Windows doesn't):
    test_augassign
    test_class
    test_coercion
I can't stay awake longer to stare at this (be my guest).  Offhand
cures weren't obvious, nor was it even obvious that cures are possible
without major hackery.

Question:  when -Qnew is in effect, should calls to __div__ magically
change into calls to __truediv__?  See "major hackery" at tail end of
last paragraph <wink>.
2001-12-06 06:23:26 +00:00
Jeremy Hylton 518ab1c02a Use PyOS_snprintf instead of sprintf. 2001-11-28 20:42:20 +00:00
Barry Warsaw afeb2a4d89 PyOS_getsig(), PyOS_setsig(): The minimal amount of work to avoid the
uninitialized memory reads reported in bug #478001.

Note that this doesn't address the following larger issues:

- Error conditions are not documented for PyOS_*sig() in the C API.

- Nothing that actually calls PyOS_*sig() in the core interpreter and
  extension modules actually /checks/ the return value of the call.

Fixing those is left as an exercise for a later day.
2001-11-13 23:08:26 +00:00
Guido van Rossum 9abaf4d3b7 SF patch #467455 : Enhanced environment variables, by Toby Dickenson.
This patch changes to logic to:

   if env.var. set and non-empty:
       if env.var. is an integer:
           set flag to that integer
   if flag is zero: # [actually, <= 0 --GvR]
       set flag to 1

   Under this patch, anyone currently using
   PYTHONVERBOSE=yes will get the same output as before.

   PYTHONVERBNOSE=2 will generate more verbosity than
   before.

   The only unusual case that the following three are
   still all equivalent:
   PYTHONVERBOSE=yespleas
   PYTHONVERBOSE=1
   PYTHONVERBOSE=0
2001-10-12 22:17:56 +00:00