On 18/04/2017 16:10, Brian Inglis wrote:
On 2017-04-18 06:36, 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)Dies on me too: $ uname -srvmo CYGWIN_NT-10.0 2.8.0(0.309/5/3) 2017-04-01 20:47 x86_64 Cygwin $ watch --version watch from procps-ng 3.3.11 gdb crashes with dumper .core. $ gdb watch ... Reading symbols from watch...(no debugging symbols found)...done.
If you install procps-ng-debuginfo for symbols...
(gdb) run -c cat e Starting program: /usr/bin/watch -c cat e [New Thread 436.0x19dc] [New Thread 436.0x1e44] [New Thread 436.0x834] [New Thread 436.0x12d0] [New Thread 436.0x1508] [New Thread 436.0xa24] Program received signal SIGSEGV, Segmentation fault. 0x00000001004029b0 in ?? () (gdb) bt #0 0x00000001004029b0 in ?? ()
... you'll see the obvious mistake which has been fixed upstream for a while [1].
[1] https://gitlab.com/procps-ng/procps/issues/11 -- 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
