Program received signal SIGSEGV, Segmentation fault.
0x0000000000402aa2 in main (argc=2, argv=0x7fffffffe0d8) at watch.c:541
541 watch.c: No such file or directory.
(gdb) where
#0 0x0000000000402aa2 in main (argc=2, argv=0x7fffffffe0d8) at watch.c:541
(gdb) p argv[0]
$1 = 0x7fffffffe3e4 "/usr/bin/watch"
(gdb) p argv[1]
$2 = 0x7fffffffe3f3 "tail sample.dat"
(gdb) p argv[2]
$3 = 0x0
(gdb) p c
$4 = 8067886
(gdb) p/x c
$5 = 0x7b1b2e
(gdb)
line 541 is:
}while (c != WEOF &&
!isprint(c) && c<128
&& wcwidth(c) == 0
&& c != L'\n'
&& c != L'\t'
&& (c != L'\033' || option_color != 1));
I'm suspicious that the isprint should be an iswprint but it might need a libc
spec person to know whether isprint should
be safe.
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https://bugs.launchpad.net/bugs/965341
Title:
watch command line utility crashes with segfault when processing
binary output
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