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Merge branch 'gbacktrace_dup2_proper_handling' into 'master'

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glib/gbacktrace.c: Handling properly the dup(stderr) call

Closes #1880

See merge request GNOME/glib!1055
This commit is contained in:
Philip Withnall 2019-08-26 11:05:28 +00:00
commit 0d54f00317
1 changed files with 7 additions and 2 deletions
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9
glib/gbacktrace.c
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@ -293,7 +293,8 @@ stack_trace (const char * const *args)
{
/* Save stderr for printing failure below */
int old_err = dup (2);
fcntl (old_err, F_SETFD, fcntl (old_err, F_GETFD) | FD_CLOEXEC);
if (old_err != -1)
fcntl (old_err, F_SETFD, fcntl (old_err, F_GETFD) | FD_CLOEXEC);
close (0); dup (in_fd[0]); /* set the stdin to the in pipe */
close (1); dup (out_fd[1]); /* set the stdout to the out pipe */
@ -302,7 +303,11 @@ stack_trace (const char * const *args)
execvp (args[0], (char **) args); /* exec gdb */
/* Print failure to original stderr */
close (2); dup (old_err);
if (old_err != -1)
{
close (2);
dup (old_err);
}
perror ("exec gdb failed");
_exit (0);
}