471311 2023-06-21 22:09:00 +0000 gdb --multi mode stdout redirecting to stderr 2023-08-21 16:03:56 +0000 1 1 6 Developer tools valgrind general 3.21.0 Other Linux RESOLVED FIXED NOR normal --- 1 mark mark ahajkova 0 oldest_to_newest 2237645 0 mark 2023-06-21 22:09:00 +0000 Sasha is working on a real solution for redirecting all of the stdin/out/err file descriptors: https://git.sr.ht/~sasshka/binutils-gdb/log/split_fd But that needs a new gdb that understand the new proposed FdSwitch packet. As a temporary workaround we can at least redirect stdout to stderr (and close stdin) for the inferior (unless --port is used). Something like: /* close stdin */ close (0); /* open /dev/null as new stdin */ open ("/dev/null", O_RDONLY); /* redirect stdout as stderr */ dup2 (2, 1); 2247053 1 161024 mark 2023-08-17 13:45:48 +0000 Created attachment 161024 gdb --multi mode stdout redirecting to stderr Implementing this is almost trivial, see attached. 2247674 2 mark 2023-08-21 16:03:56 +0000 commit b35a8ed5a9575dbadb7e2a84bd4b6c4ab9eda21a Author: Mark Wielaard <mark@klomp.org> Date: Thu Aug 17 15:40:30 2023 +0200 gdb --multi mode stdout redirecting to stderr When in stdio mode (talking to gdb through stdin/stdout, not through a socket), redirect stdout to stderr and close stdin for the inferior. That way at least some output can be seen, but there will be no input. This is workaround till we have real terminal handling. * coregrind/vgdb.c (main): Pass in_port to do_multi_mode. (do_multi_mode): Pass in_port to fork_and_exec_valgrind. (fork_and_exec_valgrind): Close stdin, redirect stdout to stderr if in_port <= 0. https://bugs.kde.org/show_bug.cgi?id=471311 161024 2023-08-17 13:45:48 +0000 2023-08-17 13:45:48 +0000 gdb --multi mode stdout redirecting to stderr 0001-gdb-multi-mode-stdout-redirecting-to-stderr.patch text/plain 3907 mark RnJvbSA0NDlkZDgyYmVjYWU2NTMzYThlNjU4ZTc2ZjMwZjY1NDM0ZjY0MTdmIE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBNYXJrIFdpZWxhYXJkIDxtYXJrQGtsb21wLm9yZz4KRGF0ZTog VGh1LCAxNyBBdWcgMjAyMyAxNTo0MDozMCArMDIwMApTdWJqZWN0OiBbUEFUQ0hdIGdkYiAtLW11 bHRpIG1vZGUgc3Rkb3V0IHJlZGlyZWN0aW5nIHRvIHN0ZGVycgoKV2hlbiBpbiBzdGRpbyBtb2Rl ICh0YWxraW5nIHRvIGdkYiB0aHJvdWdoIHN0ZGluL3N0ZG91dCwgbm90CnRocm91Z2ggYSBzb2Nr ZXQpLCByZWRpcmVjdCBzdGRvdXQgdG8gc3RkZXJyIGFuZCBjbG9zZSBzdGRpbgpmb3IgdGhlIGlu ZmVyaW9yLiBUaGF0IHdheSBhdCBsZWFzdCBzb21lIG91dHB1dCBjYW4gYmUgc2VlbiwKYnV0IHRo ZXJlIHdpbGwgYmUgbm8gaW5wdXQuCgpUaGlzIGlzIHdvcmthcm91bmQgdGlsbCB3ZSBoYXZlIHJl YWwgdGVybWluYWwgaGFuZGxpbmcuCgogICAgICogY29yZWdyaW5kL3ZnZGIuYyAobWFpbik6IFBh 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