Upcoming features for #tracexec
#Exec backtrace and jump to parent
In next release, the #TUI will support gathering the exec #backtrace of any exec event, which will greatly simply debugging experience.
The exec backtrace shows the history of a specific event and indicates any ancestor spawns or directly tears itself down and becomes the new process.
Jump to parent is a lighter alternative to backtrace, where you just press `U` to jump to the parent exec evt.
tracexec 0.11.0 released with new timestamp feature and O_CLOEXEC file descriptors are now hidden by default.
Yes, you might find versions of getopt.c around the place that have an
if (argc < 1)
check. Not this one in the current source code for GCC, though:
Psst!
The buggy test program that blocked the EINVAL fix in Linux still has the bug today, two years later.
https://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git/tree/src/vfs/vfstest.c#n503
Amusingly, the subordinate program is a copy of the same program, and it starts by calling getopt_long_only(), one of whose earliest actions is:
optind = 1; /* Don't scan ARGV[0], the program name. */
followed closely by:
if (optind != argc && !strcmp (argv[optind], "--"))
argc is 0 at this point.
kxxt
JdeBP