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sighandler: provide gdb with pipe stdin/stdout fds (necessary for gdb < 7.5)

This commit is contained in:
Michael Stapelberg 2012-09-11 12:57:53 +02:00
parent 38869004fe
commit 9d8a4ebc61
1 changed files with 11 additions and 0 deletions
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11
src/sighandler.c
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@ -62,6 +62,11 @@ static int backtrace(void) {
return -1; return -1;
} else if (pid_gdb == 0) { } else if (pid_gdb == 0) {
/* child */ /* child */
int stdin_pipe[2],
stdout_pipe[2];
pipe(stdin_pipe);
pipe(stdout_pipe);
/* close standard streams in case i3 is started from a terminal; gdb /* close standard streams in case i3 is started from a terminal; gdb
* needs to run without controlling terminal for it to work properly in * needs to run without controlling terminal for it to work properly in
@ -70,6 +75,12 @@ static int backtrace(void) {
close(STDOUT_FILENO); close(STDOUT_FILENO);
close(STDERR_FILENO); close(STDERR_FILENO);
/* We provide pipe file descriptors for stdin/stdout because gdb < 7.5
* crashes otherwise, see
* http://sourceware.org/bugzilla/show_bug.cgi?id=14114 */
dup2(stdin_pipe[0], STDIN_FILENO);
dup2(stdout_pipe[1], STDOUT_FILENO);
char *pid_s = NULL; char *pid_s = NULL;
sasprintf(&pid_s, "%d", pid_parent); sasprintf(&pid_s, "%d", pid_parent);