2020年1月21日(火) 10:47 Takashi Yano <takashi.y...@nifty.ne.jp>:
> Thanks for the report. I could reproduce the problem under LANG=ja_JP.UTF-8.
> I have almost caught the culprit. Please wait for a while.
Thank you for the patch fixing the problem. I cherry-picked the patch
and tried it, but there is another problem.
Description:
The programs compiled with "-mwindows" cannot read more than one
character from PTY in a non-canonical mode in . There was no
problem before the patch "Cygwin: pty: Fix reopening slave in
push_to_pcon_screenbuffer().".
Repeat-By:
1. Open Cygwin Terminal (mintty)
2. Compile the attached program with the following commands.
$ g++ -o minimal2-con.exe minimal2.cpp
$ g++ -mwindows -o minimal2-win.exe minimal2.cpp
3. The expected behavior can be checked with `minimal2-con'. After
executing the command, please type some five characters. The
string `[RECV]' will be printed five times, and then the program
will exit.
$ ./minimal2-con
[RECV][RECV][RECV][RECV][RECV]
$
4. However, with the compile option "-mwindows", we can only see one
`[RECV]', and the program will hang.
$ ./minimal2-win
[RECV]
Best,
Koichi
#include <unistd.h>
#include <termios.h>
int main() {
struct termios oldTermios;
tcgetattr(STDIN_FILENO, &oldTermios);
struct termios termios = oldTermios;
termios.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
termios.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
termios.c_cflag &= ~(CSIZE | PARENB);
termios.c_cflag |= CS8;
termios.c_oflag &= ~(OPOST);
termios.c_cc[VMIN] = 1;
termios.c_cc[VTIME] = 0;
tcsetattr(STDIN_FILENO, TCSAFLUSH, &termios);
for (int i = 0; i < 5; i++) {
char c;
int const nread = read(STDIN_FILENO, &c, 1);
write(STDOUT_FILENO, nread > 0 ? "[RECV]" : "[FAIL]", 6);
}
tcsetattr(STDIN_FILENO, TCSAFLUSH, &oldTermios);
write(STDOUT_FILENO, "\n", 1);
return 0;
}
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