Pike-devel January 2018

pike-devel@lists.lysator.liu.se

8 participants
16 discussions

Pike Meet-up 2018-Q1
by Henrik Grubbstr�m (Lysator) ＠ Pike (-) developers forum 20 Oct '21

20 Oct '21

Hi. At Pike Conference 2017 it was decided that we ought to hold a more informal meeting in Linköping ~ once every quarter. As the three month mark from the conference is coming up soon, it seems time to announce the first such meeting for 2018: Pike Meet-up 2018-Q1 Date: 2018-02-03 (Sat) Time: 10:00 - afternoon/evening Place: Roxen IS AB S:t Larsgatan 22A Linköping Welcome! /grubba

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Pike 8.0.528 release candidate
by Peter Bortas 11 May '18

11 May '18

As is tradition a release has been prepared at the new years party with Champagne in one hand and keyboard in the other waiting for the clock to hit 24:00. Pike 8.0.528 release candidate: https://pike.lysator.liu.se/pub/pike/beta/8.0.528/Pike-v8.0.528.tar.gz Other builds: https://pike.lysator.liu.se/pub/pike/beta/8.0.528/Pike-v8.0.528-Darwin-15.4… https://pike.lysator.liu.se/pub/pike/beta/8.0.528/Pike-v8.0.528-win32-oldli… Real Mac build comes when Bill has time to have a look at that. Changes since Pike 8.0.498 (release 11) ---------------------------------------------------------------------- New Features ------------ o Sql.pgsql - Added support for PostgreSQL 10's stronger password authentication (SCRAM-SHA-256). - Slightly reduced overhead. - Support IEEE binary float database-wireformat. - Prevent new queries from starting in the local_backend. o Crypto.Hash.SCRAM New class to support SCRAM authentication. o Thread.ResourceCount New module to allow threadsafe race-condition-free counting of resources. o SSL.File Support query_fd() and set_buffer_mode() methods. o Toole.Standalone.check_http - Allow redirect responses. - Support --expect option. Bug fixes --------- o Compiler Improved variant robustness. o Calendar Updated tzdata to 2017c. o Crypto.CCM Fixed initialization of the iv. o Filesystem.Monitor - Fixed issue with next_poll being set to zero causing polling every second. - Fixed indexing the NULL value error when InotifyMonitor was used in combination with a filter_file() that doesn't accept everything. o HTTPLoop: Fixed some potential race conditions. o Image.Image - Improved argument checking in apply_curve(). Non-integer array values lead to use of uninitialized curve values. o Image.PVR Fixed size check for twiddled images. o MIME Support trailing newline in MIME part epilogues. o Protocols.HTTP Fixed incoming chunked transfers (timed async works now, chunk options are properly 'parsed'). o Protocols.LDAP Fixed race condition on initializing LDAPS. o Search.Utils Updated debug string format. o Sql.pgsql - Suppress spurious 'File not open' blurts on stderr when the connection is still pending and we inspect the connection object. - Signal EOF early before closing the SQL result portal and thoroughly cleanup bufcon/stashcount to prevent occasional deadlocks on asynchronous object destructions. - Suppress rare "access in destructed object" messages. - Rip out fundamentally flawed reconnect logic, made failures consistent. - Repair SSL connect logic. - Update documentation. - Repair fetch_row_array(). o mktime/System.TM Make timezone management consistent (especially UTC handling). o Standards.IIM Disabled debug output for unknown segment markers. o Stdio.send_file Improved support for TLS/SSL; wait for TLS handshake to complete before calling the sendfile done callback when sending an empty string. This fixes the issue where the connection got closed before TLS handshaking was completed, confusing the other side. o Image Creating images with mode "grey" now works as documented, e.g. Image.Image(10,10,"grey",123); Optimizations ------------- o mktime/System.TM Considerable speedup and a reduction in codesize. Building & Tools ---------------- o Image.SVG Fall back to using the unprefixed pkg-config if the arch-prefixed doesn't exist. o Mysql Support MariaDB 10.2 headerfiles. o precompile Support precompilation with Pike 8.1 again. o smartlink Fixed multiple issues on Darwin & NetBSD. o Whitefish Use the standard VPATH. o Yp Support using libtirpc. Glibc 2.26 has removed the Sun RPC implementation... Regards, -- Peter Bortas

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strange error on cross-compiled pike 8
by H. William Welliver III 02 Feb '18

02 Feb '18

I cross compiled pike 8.0.498 on an amd64/linux system for use on an armv5tejl/linux system, and I’m getting a strange error when starting it up: -:1: Type mismatch for callback function `[]=: -:1: Expected: scope(0,function(zero, (0=zero) : 0)). -:1: Got : function(int(128..-129), int(128..-129) : int(0..-16777216)). -:1: Program constant "Buffer" is NULL. program.c:6011: Fatal error: Failed to initialize class '_Stdio' No stack - no backtrace. Aborted At first I thought it might be a dynamic loading problem, but _Stdio shouldn’t be a dynamic module, right? Anything obvious I might be missing?

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Newlines in strings
by Stephen R. van den Berg 29 Jan '18

29 Jan '18

When writing some new SQL queries, I was wondering, would there be a downside to allowing direct newlines in strings? I.e. sample code: mixed r = db->big_typed_query(" SELECT invno FROM mutation mu WHERE mu.mutid = 12 "); would then just work. And if that is not desirable, any other suggestions which do not involve ugliness like: mixed r = db->big_typed_query("" "SELECT invno " " FROM mutation mu " " WHERE mu.mutid = 12 " ""); or mixed r = db->big_typed_query(" \ SELECT invno \ FROM mutation mu \ WHERE mu.mutid = 12 \ "); -- Stephen.

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GTK2 setting locale
by Arne Goedeke 29 Jan '18

29 Jan '18

The GTK2 module sets the locale of the process to "". This breaks on locales which e.g. use COMMA instead of PERIOD for floating point numbers. The symptom I have observed is that pike will run into a loop inside of the compiler when trying to parse a float and then eventually crash. I think the short-term fix should be to call gtk_disable_setlocale() inside of the GTK2 module to prevent GTK2 to change the locale. Maybe mid-term we can make pike not depend on the process locale? I suppose there might be other external modules which might mess with locale. Arne P.S. I won't be able to attend the pike meetup unfortunately...

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How to resize the button in this GUI to be smaller ?
by Hans Schueren 28 Jan '18

28 Jan '18

Hi again, i have a gui code here. The button is half size of the main window and to great. Any idea how to make it smaller ? _____________________________________________________ GTK2.Widget mainwindow,clickcnt,clicker; int clicks; void click() { clickcnt->set_text("Clicks: "+(++clicks)); } int main() { GTK2.setup_gtk(); mainwindow=GTK2.Window(GTK2.WindowToplevel); mainwindow->set_title("Click counter"); mainwindow->set_size_request(600, 500); mainwindow->set_position(GTK2.WIN_POS_CENTER); mainwindow->add(GTK2.Vbox(0,10) ->add(clickcnt=GTK2.Label("There have been no clicks yet")) ->add(clicker=GTK2.Button("Click me")) )->show_all(); mainwindow->signal_connect("delete_event",lambda() {exit(0);}); clicker->signal_connect("clicked",click); return -1; } -- Sent from: http://pike.1058338.n5.nabble.com/Pike-Dev-f4605220.html

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Set a gtk2 window to center in pike 7.8
by Hans Schueren 27 Jan '18

27 Jan '18

//How to set the positon of window1 to center ?// window1->set_position(GTK2_WINDOW(window), GTK2_WIN_POS_CENTER_ALWAYS); //window1 is a toplevelWindow// object window1 = GTK2.Window(GTK2.WINDOW_TOPLEVEL); Let us assume not to be programmer. Instead a metalworker. I only want to cut out a metal sheet as main in the right size and center position! The main frame of the project. -- Sent from: http://pike.1058338.n5.nabble.com/Pike-Dev-f4605220.html

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Sql: big_typed_query()
by Stephen R. van den Berg 25 Jan '18

25 Jan '18

Why was it decided that if big_typed_query() is not supported by an sql driver, that we want to throw an error instead of transparently falling back to big_query()? I normally would say, the transition to big_typed_query() is, by definition, a fuzzy one, because depending on the database (driver), one cannot possibly have a one-to-one typed equivalence for all available database types. So it is inevitable that some values will be typed, and others will still be strings. And with that in mind, you might as well fall back to big_query() completely if there are no typed results. If there are no objections, I'll alter the code accordingly (at least in 8.1). -- Stephen.

1 0

The GET_VAL macro and C99
by ceder (-) Per Cederqvist ＠ Pike (-) developers forum 24 Jan '18

24 Jan '18

The GET_VAL macro in src/builtin.cmod is invoked like this: > GET_VAL (true) > GET_VAL (false) > GET_VAL (null) If you happen to include <stdbool.h>, the macro expansion might result in these functions: get_val_1 get_val_0 get_val_null This is because true is defined as 1 and false as 0. This isn't a big issue for two reasons: - src/builtin.cmod does not actually invoke <stdbool.h> - as far as I can see, nothing actually uses get_val_true and get_val_false (but I may be overlooking something) This could be fixed by ## and # directly in the GET_VAL macro, instead of going via PIKE_CONCAT and TOSTR. Of course, that breaks on older compilers that don't support ## and #; I don't know if the Pike community still cares about them. One could also argue that "if it ain't broke, don't fix it". That is a valid point of view. But the code is a bit fragile; sooner or later somebody might add <stdbool.h> without that it affects the GET_VAL expansion.

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//
by Martin Nilsson (Coppermist) ＠ Pike (-) developers forum 20 Jan '18

20 Jan '18

Given the amounts of C++ comments in the code, is there actually a platform we care about that can't handle them?

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Protocols.HTTP.Server.SSLPort()->create([...], void|int share)
by ceder (-) Per Cederqvist ＠ Pike (-) developers forum 18 Jan '18

18 Jan '18

I'm trying to figure out what the "void|int share" argument of Protocols.HTTP.Server.SSLPort()->create() really does. The documentation is less than helpful: > Parameter share > > If true, the connection will be shared if possible. See > Stdio.Port.bind for more information (Source: <http://pike.lysator.liu.se/generated/manual/modref/ex/predef_3A_3A/Protocol…>) But the Stdio.Port.bind documentation does not mention "share". Looking at the source code I see that my suspicion is correct: "share" corresponds to the "reuse_port" argument. I think "share" should be renamed "reuse_port", so that it is easier to read the documentation. Any objections? If not, I'll commit such a change to the 8.1 branch tomorrow.

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Fun with strict_types
by Tobias S. Josefowitz 17 Jan '18

17 Jan '18

Hi all, I've had a little run in with strict types, and I fail to convince myself that certain aspects of its behaviour have merit. Consider $ cat test.pike #pragma strict_types void main() { array(array(mixed|string)) to_be_mapping = ({ ({ "foo", 1 }), ({ "bar", "xxx" }), }); mapping(string:int|string) m; #ifdef WORKAROUND mixed mix(mixed m) { return m; } #else # define mix(X) (X) #endif m = [mapping(string:int|string)]mix(mkmapping(to_be_mapping[*][0], to_be_mapping[*][1])); } $ ~/local/bin/pike test.pike test.pike:17: Warning: An expression of type mapping(mixed:int | string) cannot be assigned to a variable of type mapping(string:int | string). $ ~/local/bin/pike -DWORKAROUND test.pike (no output indeed) Am I correct to assume that silently - somehow - not accepting my softcast in at least some regards on something like mapping(mixed:int|string) while accepting it on mixed might not be intended behaviour? Tobi

1 0

strftime() and strptime() indirect via System.TM?
by Stephen R. van den Berg 15 Jan '18

15 Jan '18

While adding strftime() and strptime() methods to Val.Timestamp and Val.Date, I couldn't help but noticing that in order to access both libc functions I need to go through System.TM. Wouldn't it be preferable to create direct native builtins for those two functions instead? (to put them in the same boat with mktime/gmtime etc?) -- Stephen.

1 0

AmigaOS... and Pike 8.1
by Stephen R. van den Berg 12 Jan '18

12 Jan '18

I just ripped out AmigaOS from Pike 8.1. Martin warned me (after I'd already ripped it out, of course) that maybe Marcus is still using it? So, is anyone still using AmigaOS in Pike 8.1? If yes, I'll revert the patch. If no, or if we stop supporting at 8.1, I'll leave it as is. -- Stephen.

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What is the difference between _encode() and _serialize() ?
by Stephen R. van den Berg 12 Jan '18

12 Jan '18

What is the difference between _encode() and _serialize() ? -- Stephen.

1 0

GTK/GDK on OSX
by H William Wellliver III 08 Jan '18

08 Jan '18

I’m running into some build problems on OSX. It seems that the GTK module assumes that if a system is NT that gdkwin.h is used and otherwise gdkx.h is used. Unfortunately, it seems that on some builds of GTK/GDK for OS X, neither of those is correct and that gdkquartz.h should be used. I’m guessing that some configure tests are needed to determine which of the 3 files is actually present. However a quick look at configure.in leaves me unsure how best to include that. Anyone with more expertise in the GTK module’s inner workings care to weigh in? Bill

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Pike-devel January 2018