From: "André Bleau" <Andre_Bleau@hotmail.com>
To: "cygwin@cygwin.com" <cygwin@cygwin.com>
Subject: Problems with a combination of a mingw program, mintty, and CYGWIN=disable_pcon
Date: Thu, 7 May 2020 03:38:25 +0000 [thread overview]
Message-ID: <MN2PR04MB63843D8BFF4392E3B328A72493A50@MN2PR04MB6384.namprd04.prod.outlook.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 5704 bytes --]
Hi cygwin users,
I have cli program that I run with mintty. It is a simple C++ program, reading from cin and outputing to cout. It is cross-compiled as a mingw program. I've been running it without problems fro over 2 years. Recently, I updated cygwin to 3.1.4-1 and noticed the pcon support. Since then, the output of my program has been messy: output lines have intermittent gaps in them. I made a simple test case that reproduces the problem, from the following simple C++ file, hello.cpp :
#include <iostream>
using namespace std;
static string Green = "\033[32m";
static string Yellow = "\033[33m";
static string Reset = "\033[0m";
int main (int pArgc, char* pArgv[])
{
cout << "Hello!" << endl;
string answer;
do
{
cout << Yellow << "q to Quit, p to Print " << Reset;
cin >> answer;
cout << Yellow << "You answered: " << Reset << answer << endl;
if (answer[0] == 'p')
{
for (int i = 0; i < 30; ++i)
{
cout << Green << i << "\tA simple line of printing in green characters." << Reset << endl;
}
}
} while (answer[0] != 'q');
cout << "Goodbye." << endl;
return 0;
}
Compiled with:
x86_64-w64-mingw32-c++ -g hello.cpp -o hello -static-libgcc -static-libstdc++ -Wl,-Bstatic -lstdc++ -lpthread -Wl,-Bdynamic
When run in mintty, it prompts you to answer q or p . q quits the program, p prints 30 times the same line of green text.
With the new pcon support, often, everything is correct: 30 lines of green text are outputted correctly; but most of the time a few lines will have gaps in them or show a partial escape sequence, like this:
You answered: p
0 A simple line of printing in green characters.
1 A simple line of printing in green characters.
2 A simple line of printing in green characters.
3 A simple line of printing in green characters.
4 A simple line of printing in green characters.
5 A simple line of printing in green characters.
6 A simple line of printing in green characters.
7 A simple line of printing in green characters.
8 A simple line of printing in green characters.
9 A simple line of printing in green characters.
10 A simple line of printing in green characters.
11 A simple line of printing in green characters.
12 A simple line of printing in green characters.
13 A simple line of printing in green characters.
14 A simple line of printing in green characters.
15 A simple line of printing in green characters.
16 A simple line of printing in green characters.
17 A simple line of printing in green characters.
18 A simple line of printing in green characters.
19 A simple line of printing in green characters.
20 A simple line of printing in green characters.
21 A simple line of printing in green characters.
22 A simple line of printing in green characters.
23 A simple line of printing in green characters.
24 A simple line of printing in green characters.
25 A simple line of printing in green characters.
26 A simple line of printing in green characters.
27 A simple line of printing in green characters.
28 A simple line of printing in green characters.
[32m29 A simple line of printing in green characters.
q to Quit, p to Print p
You answered: p
0 A simple line of printing in green characters.
1 A simple line of printing in green characters.
2 A simple line of printing in green characters.
3 A simple line of printing in green characters.
4 A simple line of printing in green characters.
5 A simple line of printing in green characters.
6 A simple line of printing in green characters.
7 A simple line of printing in green characters.
8 A simple line of printing in green characters.
9 A simple line of printing in green characters.
10 A simple line of printing in green characters.
11 A simple line of printing in green characters.
12 A simple line of printing in green characters.
13 A simple line of printing in green characters.
14 A simple line of printing in green characters.
15 A simple line of printing in green characters.
16 A simple line of printing in green characters.
17 A simple line of printing in green characters.
18 A simple line of printing in green characters.
19 A simple line of printing in green characters.
20 A simple line of printing in green characters.
21 A simple line of printing in green characters.
22 A simple line of printing in green characters.
23 A simple line of printing in green characters.
24 A simple line of printing in green characters.
25 A simple line of printing in green characters.
26 A simple line of printing in green characters.
27 A simple line of printing in green characters.
28 A simple line of printing in green characters.
29 A simple line of printing in green characters.
q to Quit, p to Print q
If I start mintty with CYGWIN=disable_pcon and run the hello program in it, everything is fine and the program always outputs correctly, as it did before I updated cygwin.
CYGWIN=disable_pcon /usr/bin/mintty &
OK, no big deal then, I'll make a small bash script to automate this: hellobash
#/bin/bash
CYGWIN=disable_pcon /usr/bin/mintty absolutePath/hello.exe &
This is where it gets weird. Running ./hellobash sometimes gets the hello program run correctly. It accepts input and displays output as expected. But in about 1 in 5 runs, it will not accept input. A prompt is displayed, but no cursor is shown and typing produces nothing. ^C does not stop the program. Weirder: in about 1 in 20 to 30 runs, it's the converse: it will be stuck in a loop as if input was continuously feed to it, even if you don't type anything.
Output of cygcheck -c is attached.
Regards,
- André Bleau
[-- Attachment #2: cygcheck.out --]
[-- Type: application/octet-stream, Size: 29851 bytes --]
Cygwin Package Information
Package Version Status
_autorebase 001007-1 OK
adwaita-icon-theme 3.26.1-1 OK
alternatives 1.3.30c-10 OK
at-spi2-core 2.26.2-1 OK
autoconf 13-1 OK
autoconf2.1 2.13-12 OK
autoconf2.5 2.69-4 OK
automake 11-1 OK
automake1.10 1.10.3-3 OK
automake1.11 1.11.6-3 OK
automake1.12 1.12.6-3 OK
automake1.13 1.13.4-2 OK
automake1.14 1.14.1-3 OK
automake1.15 1.15.1-2 OK
automake1.16 1.16.1-1 OK
automake1.9 1.9.6-11 OK
base-cygwin 3.8-1 OK
base-files 4.3-2 OK
bash 4.4.12-3 OK
binutils 2.34+1git.de9c1b7cfe-1 OK
bzip2 1.0.8-1 OK
ca-certificates 2.40-1 OK
clisp 2.49-6.20150312hg15611 OK
cmake 3.14.5-1 OK
cmake-doc 3.14.5-1 OK
cmake-gui 3.14.5-1 OK
coreutils 8.26-2 OK
crypt 2.1-1 OK
crypto-policies 20190218-1 OK
csih 0.9.11-1 OK
cygport 0.33.1-1 OK
cygrunsrv 1.62-1 OK
cygutils 1.4.16-2 OK
cygwin 3.1.4-1 OK
cygwin-devel 3.1.4-1 OK
dash 0.5.9.1-1 OK
dconf-service 0.26.1-1 OK
dejavu-fonts 2.37-1 OK
desktop-file-utils 0.23-1 OK
diffstat 1.61-1 OK
diffutils 3.5-2 OK
dos2unix 7.4.1-1 OK
dri-drivers 19.1.6-1 OK
editrights 1.03-1 OK
file 5.32-1 OK
findutils 4.6.0-1 OK
gamin 0.1.10-15 OK
gawk 5.1.0-1 OK
gcc-core 9.3.0-2 OK
gcc-g++ 9.3.0-2 OK
gdb 9.1-1 OK
gdk-pixbuf2.0-svg 2.40.20-1 OK
getent 2.18.90-4 OK
git 2.21.0-1 OK
glib2.0-networking 2.54.1-1 OK
gnuplot 5.2.8-1 OK
grace 5.1.25-2 OK
grace-devel 5.1.25-2 OK
grep 3.0-2 OK
groff 1.22.4-1 OK
gsettings-desktop-schemas 3.24.1-1 OK
gtk-update-icon-cache 3.22.28-1 OK
gzip 1.8-1 OK
hicolor-icon-theme 0.15-1 OK
hostname 3.13-1 OK
icon-naming-utils 0.8.90-1 OK
info 6.7-1 OK
ipc-utils 1.0-2 OK
less 551-1 OK
lftp 4.9.1-1 OK
libamd1 2.4.4-1 OK
libarchive13 3.3.2-1 OK
libargp 20110921-3 OK
libarpack0 3.7.0-1 OK
libatk-bridge2.0_0 2.26.1-1 OK
libatk1.0_0 2.26.1-1 OK
libatomic1 9.3.0-2 OK
libatspi0 2.26.2-1 OK
libattr1 2.4.48-2 OK
libblkid1 2.33.1-2 OK
libboost_regex1.66 1.66.0-1 OK
libbrotlicommon1 1.0.7-1 OK
libbrotlidec1 1.0.7-1 OK
libbtf0 1.2.4-1 OK
libbz2_1 1.0.8-1 OK
libcairo2 1.16.0-1 OK
libcamd1 2.4.4-1 OK
libcbor 0.5.0-1 OK
libccolamd1 2.9.4-1 OK
libcerf1 1.13-1 OK
libcholmod1 3.0.9-1 OK
libcolamd1 2.9.4-1 OK
libcom_err2 1.44.5-1 OK
libcroco0.6_3 0.6.12-1 OK
libcrypt-devel 4.4.4-1 OK
libcrypt0 2.1-1 OK
libcrypt2 4.4.4-1 OK
libcurl4 7.66.0-1 OK
libcxsparse0 3.1.7-1 OK
libdatrie1 0.2.8-1 OK
libdb5.3 5.3.28-2 OK
libdbus1_3 1.10.22-1 OK
libedit0 20130712-1 OK
libepoxy0 1.4.3-1 OK
libexpat1 2.2.6-1 OK
libfam0 0.1.10-15 OK
libfdisk1 2.33.1-2 OK
libffi6 3.2.1-2 OK
libfftw3_3 3.3.8-1 OK
libfido2 1.3.0-2 OK
libFLAC8 1.3.2-1 OK
libfltk1.3 1.3.4-1 OK
libfontconfig-common 2.13.1-1 OK
libfontconfig1 2.13.1-1 OK
libfreetype6 2.9.1-1 OK
libgc1 8.0.4-1 OK
libgcc1 9.3.0-2 OK
libgd3 2.2.5-2 OK
libgdbm4 1.13-1 OK
libgdbm6 1.18.1-1 OK
libgdbm_compat4 1.18.1-1 OK
libgdk_pixbuf2.0_0 2.36.11-1 OK
libgfortran4 7.4.0-1 OK
libggi2 2.2.2-4 OK
libggiwmh0 0.3.2-4 OK
libgii1 1.0.2-4 OK
libGL1 19.1.6-1 OK
libgl2ps1 1.4.1-2 OK
libglapi0 19.1.6-1 OK
libglib2.0_0 2.54.3-1 OK
libglpk40 4.65-1 OK
libGLU1 9.0.1-1 OK
libgmp10 6.2.0-2 OK
libgnutls30 3.6.9-1 OK
libgomp1 9.3.0-2 OK
libGraphicsMagick++12 1.3.35-1 OK
libGraphicsMagick3 1.3.35-1 OK
libgraphite2_3 1.3.10-1 OK
libgsm1 1.0.17-1 OK
libgssapi_krb5_2 1.15.2-2 OK
libgtk3_0 3.22.28-1 OK
libguile2.0_22 2.0.14-3 OK
libguile2.2_1 2.2.7-1 OK
libharfbuzz0 2.5.3-1 OK
libhdf5_10 1.8.20-1 OK
libhdf5_101 1.10.2-1 OK
libhdf5_103 1.10.6-1 OK
libhdf5hl_10 1.8.20-1 OK
libhogweed4 3.4.1-1 OK
libICE6 1.0.10-1 OK
libiconv 1.14-3 OK
libiconv2 1.14-3 OK
libicu61 61.1-1 OK
libicu64 64.2-1 OK
libicu65 65.1-1 OK
libidn2_0 2.2.0-1 OK
libimagequant0 2.10.0-1 OK
libintl8 0.19.8.1-2 OK
libiodbc2 3.52.8-2 OK
libisl15 0.16.1-1 OK
libisl22 0.22.1-2 OK
libjasper4 2.0.14-1 OK
libjbig2 2.0-14 OK
libjpeg8 1.5.3-1 OK
libjson-glib1.0_0 1.4.2-1 OK
libjsoncpp19 1.8.4-1 OK
libk5crypto3 1.15.2-2 OK
libklu1 1.3.6-1 OK
libkrb5_3 1.15.2-2 OK
libkrb5support0 1.15.2-2 OK
liblapack0 3.9.0-2 OK
liblcms2_2 2.9-1 OK
libllvm8 8.0.1-1 OK
libltdl7 2.4.6-7 OK
liblz4_1 1.7.5-1 OK
liblzma5 5.2.4-1 OK
liblzo2_2 2.10-1 OK
libmetis0 5.1.0-1 OK
libmpc3 1.1.0-1 OK
libmpfr6 4.0.2-2p6 OK
libmysqlclient18 10.1.30-1 OK
libncursesw10 6.1-1.20190727 OK
libnetcdf11 4.4.1.1-1 OK
libnettle6 3.4.1-1 OK
libnghttp2_14 1.37.0-1 OK
libnsl2 1.2.0-1 OK
libogg0 1.3.1-1 OK
libopenblas 0.3.9-1 OK
libopenldap2_4_2 2.4.49-1 OK
libp11-kit0 0.23.20-1 OK
libpango1.0_0 1.40.14-1 OK
libpcre1 8.44-1 OK
libpcre2_16_0 10.34-1 OK
libpipeline1 1.5.1-1 OK
libpixman1_0 0.38.4-1 OK
libpkgconf3 1.6.3-1 OK
libpng16 1.6.37-1 OK
libpopt-common 1.16-2 OK
libpopt0 1.16-2 OK
libportaudio2 19.20140130-3 OK
libpq5 12.2-1 OK
libproxy1 0.4.14-2 OK
libpsl5 0.21.0-1 OK
libqhull_7 2019.1-1 OK
libqrupdate0 1.1.2-3 OK
libqscintilla2-qt5-common 2.10.2-1 OK
libqscintilla2_qt5-common 2.10.2-1 OK
libqscintilla2_qt5_13 2.10.2-1 OK
libQt5Core5 5.9.4-2 OK
libQt5Designer5 5.9.4-1 OK
libQt5Gui5 5.9.4-2 OK
libQt5Help5 5.9.4-1 OK
libQt5Sql5 5.9.4-2 OK
libQt5UiTools5 5.9.4-1 OK
libquadmath0 9.3.0-2 OK
libreadline7 7.0.3-3 OK
librest0.7_0 0.8.1-1 OK
librhash0 1.3.9-1 OK
librsvg2_2 2.40.20-1 OK
libsasl2_3 2.1.27-1 OK
libsigsegv2 2.10-2 OK
libSM6 1.2.3-1 OK
libsmartcols1 2.33.1-2 OK
libsndfile1 1.0.28-2 OK
libsoup-gnome2.4_1 2.60.3-1 OK
libsoup2.4_1 2.60.3-1 OK
libsource-highlight-common 3.1.8-6 OK
libsource-highlight4 3.1.8-6 OK
libsqlite3_0 3.30.0-1 OK
libssh-common 0.8.7-1 OK
libssh4 0.8.7-1 OK
libssl1.0 1.0.2t-1 OK
libssl1.1 1.1.1f-1 OK
libssp0 6.4.0-4 OK
libstdc++6 9.3.0-2 OK
libsuitesparseconfig1 4.5.1-1 OK
libsundials_ida2 2.7.0-1 OK
libsundials_nvecserial2 2.7.0-1 OK
libsybdb5 1.00.37-1 OK
libtasn1_6 4.14-1 OK
libthai0 0.1.26-1 OK
libtiff6 4.0.9-1 OK
libtirpc-common 1.1.4-1 OK
libtirpc3 1.1.4-1 OK
libtool 2.4.6-7 OK
libumfpack1 5.7.4-1 OK
libunistring2 0.9.10-1 OK
libuuid-devel 2.33.1-2 OK
libuuid1 2.33.1-2 OK
libuv1 1.32.0-1 OK
libvorbis 1.3.6-1 OK
libvorbis0 1.3.6-1 OK
libvorbisenc2 1.3.6-1 OK
libwebp7 0.6.1-2 OK
libwebpmux3 0.6.1-2 OK
libX11-xcb1 1.6.9-1 OK
libX11_6 1.6.9-1 OK
libXau6 1.0.9-1 OK
libxcb-glx0 1.14-1 OK
libxcb-icccm4 0.4.1-1 OK
libxcb-image0 0.4.0-1 OK
libxcb-keysyms1 0.4.0-1 OK
libxcb-randr0 1.14-1 OK
libxcb-render-util0 0.3.9-1 OK
libxcb-render0 1.14-1 OK
libxcb-shape0 1.14-1 OK
libxcb-shm0 1.14-1 OK
libxcb-sync1 1.14-1 OK
libxcb-util1 0.4.0-1 OK
libxcb-xfixes0 1.14-1 OK
libxcb-xinerama0 1.14-1 OK
libxcb-xkb1 1.14-1 OK
libxcb1 1.14-1 OK
libXcomposite1 0.4.5-1 OK
libXcursor1 1.2.0-1 OK
libXdamage1 1.1.5-1 OK
libXdmcp6 1.1.3-1 OK
libXext6 1.3.4-1 OK
libXfixes3 5.0.3-1 OK
libXft2 2.3.3-1 OK
libXi6 1.7.10-1 OK
libXinerama1 1.1.4-1 OK
libxkbcommon0 0.8.0-1 OK
libXm4 2.3.6-1 OK
libxml2 2.9.9-2 OK
libXmu6 1.1.3-1 OK
libXpm4 3.5.13-1 OK
libXrandr2 1.5.2-1 OK
libXrender1 0.9.10-1 OK
libXss1 1.2.3-1 OK
libXt6 1.2.0-1 OK
libXtst6 1.2.3-1 OK
lndir 1.0.3-1 OK
login 1.13-1 OK
lua 5.3.5-1 OK
m4 1.4.18-1 OK
make 4.3-1 OK
man-db 2.7.6.1-1 OK
mariadb-common 3.0.9-1 OK
maxima 5.43.2-1 OK
mingw64-i686-binutils 2.34-1 OK
mingw64-i686-freeglut 2.8.1-1 OK
mingw64-i686-gcc-core 9.2.0-2 OK
mingw64-i686-gcc-g++ 9.2.0-2 OK
mingw64-i686-headers 7.0.0-1 OK
mingw64-i686-runtime 7.0.0-1 OK
mingw64-i686-windows-default-manifest 6.4-1 OK
mingw64-i686-winpthreads 7.0.0-1 OK
mingw64-x86_64-binutils 2.34-1 OK
mingw64-x86_64-freeglut 2.8.1-1 OK
mingw64-x86_64-gcc-core 9.2.0-2 OK
mingw64-x86_64-gcc-g++ 9.2.0-2 OK
mingw64-x86_64-headers 7.0.0-1 OK
mingw64-x86_64-runtime 7.0.0-1 OK
mingw64-x86_64-windows-default-manifest 6.4-1 OK
mingw64-x86_64-winpthreads 7.0.0-1 OK
mintty 3.1.4-1 OK
mysql-common 10.3.14-1 OK
ncurses 6.1-1.20190727 OK
nedit 5.6-1 OK
octave 5.2.0-1 OK
octave-control 3.2.0-1 OK
octave-image 2.12.0-1 OK
octave-integration 1.0.8-0.1 OK
octave-io 2.6.0-1 OK
octave-signal 1.4.1-1 OK
octave-specfun 1.1.1-0.1 OK
octave-splines 1.3.3-1 OK
octave-statistics 1.4.2-1 OK
openssh 8.2p1-1 OK
openssl 1.1.1f-1 OK
p11-kit 0.23.20-1 OK
p11-kit-trust 0.23.20-1 OK
patch 2.7.4-1 OK
perl 5.30.2-1 OK
perl-Authen-SASL 2.16-4 OK
perl-Digest-HMAC 1.03-7 OK
perl-Encode-Locale 1.05-3 OK
perl-Error 0.17029-1 OK
perl-File-Listing 6.04-7 OK
perl-HTML-Parser 3.72-3 OK
perl-HTML-Tagset 3.20-7 OK
perl-HTTP-Cookies 6.08-1 OK
perl-HTTP-Daemon 6.06-2 OK
perl-HTTP-Date 6.05-1 OK
perl-HTTP-Message 6.22-1 OK
perl-HTTP-Negotiate 6.01-7 OK
perl-IO-HTML 1.001-4 OK
perl-IO-Socket-SSL 2.068-1 OK
perl-libwww-perl 6.43-1 OK
perl-LWP-MediaTypes 6.04-2 OK
perl-MailTools 2.21-2 OK
perl-MIME-tools 5.509-1 OK
perl-Mozilla-CA 20180117-2 OK
perl-Net-HTTP 6.19-2 OK
perl-Net-SMTP-SSL 1.04-3 OK
perl-Net-SSLeay 1.88-2 OK
perl-Scalar-List-Utils 1.54-1 OK
perl-TermReadKey 2.38-2 OK
perl-Test-Harness 3.42-2 OK
perl-TimeDate 2.32-1 OK
perl-Try-Tiny 0.30-2 OK
perl-Unicode-Normalize 1.26-2 OK
perl-URI 1.76-2 OK
perl-WWW-RobotRules 6.02-7 OK
perl-XML-NamespaceSupport 1.12-3 OK
perl-XML-Parser 2.46-2 OK
perl-XML-SAX 1.02-2 OK
perl-XML-SAX-Base 1.09-3 OK
perl-XML-SAX-Expat 0.51-4 OK
perl-XML-Simple 2.25-2 OK
perl_autorebase 5.30.2-1 OK
perl_base 5.30.2-1 OK
ping 1.9.4-1 OK
pkg-config 1.6.3-1 OK
pkgconf 1.6.3-1 OK
publicsuffix-list-dafsa 20200326-1 OK
python-pip-wheel 19.2.3-1 OK
python-setuptools-wheel 41.2.0-1 OK
python2 2.7.16-1 OK
python27 2.7.16-1 OK
python36 3.6.9-1 OK
python38 3.8.2-1 OK
python38-devel 3.8.2-1 OK
python38-setuptools 41.2.0-1 OK
qt5-devel-tools 5.9.4-1 OK
qt5-doc-tools 5.9.4-1 OK
qt5-linguist-tools 5.9.4-1 OK
R 3.6.3-1 OK
R_autorebase 001001-1 OK
rebase 4.4.4-1 OK
rgb 1.0.6-1 OK
robots 2.3-2 OK
rsync 3.1.2-1 OK
run 1.3.4-2 OK
sed 4.4-1 OK
shared-mime-info 1.8-1 OK
t1lib5 5.1.2-13 OK
tar 1.29-1 OK
tcl 8.6.8-1 OK
tcl-devel 8.6.8-1 OK
tcl-tk 8.6.8-1 OK
tcl-tk-devel 8.6.8-1 OK
terminfo 6.1-1.20190727 OK
terminfo-extra 6.1-1.20190727 OK
texinfo 6.7-1 OK
tzcode 2019c-1 OK
tzdata 2019c-1 OK
unzip 6.0-17 OK
urw-base35-fonts 20170801-5 OK
util-linux 2.33.1-2 OK
vim-minimal 8.2.0486-1 OK
w32api-headers 7.0.0-1 OK
w32api-runtime 7.0.0-1 OK
wget 1.19.1-2 OK
which 2.20-2 OK
windows-default-manifest 6.4-1 OK
xbitmaps 1.1.2-1 OK
xdg-utils 1.1.1-2 OK
xkeyboard-config 2.29-1 OK
xorg-x11-fonts-dpi100 7.5-4 OK
xorg-x11-fonts-dpi75 7.5-4 OK
xz 5.2.4-1 OK
zlib-devel 1.2.11-1 OK
zlib0 1.2.11-1 OK
next reply other threads:[~2020-05-07 3:38 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-05-07 3:38 André Bleau [this message] 2020-05-07 10:17 ` Takashi Yano 2020-05-07 14:41 ` André Bleau
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