On Tue, Apr 18, 2017 at 01:36:34PM +0100, Adam Dinwoodie wrote: > I'm seeing a segfault from using `watch -c` with commands that output > ANSI colour sequences, which is a bit sad given the whole point of the > `-c` is to get the ANSI colour sequences to be displayed. > > Simple test case: > > $ echo -e '\e[0;32mGreen\e[0;0m' >escapes > > $ cat escapes # Text is green in my terminal > Green > > $ xxd escapes > 00000000: 1b5b 303b 3332 6d47 7265 656e 1b5b 303b .[0;32mGreen.[0; > 00000010: 306d 0a 0m. > > $ watch -c cat escapes > Segmentation fault (core dumped) > > $ cat watch.exe.stackdump > Exception: STATUS_ACCESS_VIOLATION at rip=001004029B0 > rax=0000000058F5FF8D rbx=0000000600001200 rcx=0000000600000060 > rdx=0000000000000000 rsi=0000000000000000 rdi=0000000000000004 > r8 =00000000FFFFCA2C r9 =000000018013C800 r10=0000000100000000 > r11=000000010040299A r12=0000000000000004 r13=00000000FFFFCAF0 > r14=0000000600000E50 r15=00000001801F82C0 > rbp=0000000000000000 rsp=00000000FFFFCA60 > program=C:\cygwin64\bin\watch.exe, pid 12100, thread main > cs=0033 ds=002B es=002B fs=0053 gs=002B ss=002B > Stack trace: > Frame Function Args > 00000000000 001004029B0 (00000000000, 00000000000, 00000000030, > 30001010000FF00) > 000FFFFCCC0 00180047812 (00000000000, 00000000000, 00000000000, > 00000000000) > 00000000000 001800455E3 (00000000000, 00000000000, 00000000000, > 00000000000) > 000FFFFFFF0 00180045694 (00000000000, 00000000000, 00000000000, > 00000000000) > End of stack trace > > This works as expected when using `watch` without the `-c` option, and > when using `watch -c` with output that doesn't include any ANSI colour > sequences. > > Output from `cygcheck -srv` is attached, and `cygcheck -f > /usr/bin/watch.exe` returns `procps-ng-3.3.11-1`.
Where does "watch" come from? It's not on my cygwin installation: > 16:12:50$ type watch > -bash: type: watch: not found and when I enter "watch" in the installer Search window, all it shows me is > xfce-mailwatch-plugin: Xfce mail watcher panel plugin and > xfce-mailwatch-plugin-debuginfo: Debug info for xfce4-mailwatch-plugin Cheers ... Duncan. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
