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| author | Hui Zhu <teawater@gmail.com> | 2014-03-21 10:25:41 +0800 |
|---|---|---|
| committer | Hui Zhu <teawater@gmail.com> | 2014-03-21 10:25:41 +0800 |
| commit | b4ab256ded5020a82ff7ce8dc485e7882fc5b6a7 (patch) | |
| tree | 311909a25f6e1a826e58da4a3dad29917a8d1e85 /gdb/linux-nat.c | |
| parent | a2db7c07510f1f682af586153fa7ca8ad42b56c6 (diff) | |
| download | gdb-b4ab256ded5020a82ff7ce8dc485e7882fc5b6a7.zip gdb-b4ab256ded5020a82ff7ce8dc485e7882fc5b6a7.tar.gz gdb-b4ab256ded5020a82ff7ce8dc485e7882fc5b6a7.tar.bz2 | |
Fix internal warning when "gdb -p xxx"
ps -e | grep a.out
28886 pts/12 00:00:00 a.out
gdb -p 28886
Loaded symbols for /lib64/ld-linux-x86-64.so.2
0x0000003b0ccbc970 in __nanosleep_nocancel () from /lib64/libc.so.6
../../binutils-gdb/gdb/cleanups.c:265: internal-warning: restore_my_cleanups has found a stale cleanup
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
The backtrace of this issue:
(gdb) bt
file=0x8b0c10 "s' failed.", line=265, fmt=0x8b0c38 "nutils-gdb/gdb/cleanups.c",
ap=0x7fff803e3ed8) at ../../binutils-gdb/gdb/utils.c:748
fmt=0x8b0c38 "nutils-gdb/gdb/cleanups.c", ap=0x7fff803e3ed8)
at ../../binutils-gdb/gdb/utils.c:799
string=0x8b0c38 "nutils-gdb/gdb/cleanups.c") at ../../binutils-gdb/gdb/utils.c:809
at ../../binutils-gdb/gdb/cleanups.c:265
at ../../binutils-gdb/gdb/cleanups.c:276
at ../../binutils-gdb/gdb/exceptions.c:142
at ../../binutils-gdb/gdb/exceptions.c:203
command=0x5d5fb8 <attach_command_continuation_free_args+18>, arg=0x7fff803e525b "2914",
from_tty=1, mask=RETURN_MASK_ALL) at ../../binutils-gdb/gdb/exceptions.c:549
---Type <return> to continue, or q <return> to quit---
func_args=0x7fff803e4280, errstring=0x8cf2e4 "/local/bin", mask=RETURN_MASK_ALL)
at ../../binutils-gdb/gdb/exceptions.c:522
This is a new issue. It is introduced by commit https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=8bc2fe488957946d2cdccda3ce8d4f39e4003ea0
It removed the discard_cleanups (back_to) inside attach_command.
Then restore_my_cleanups will throw a internal_warning.
https://sourceware.org/ml/gdb-patches/2014-03/msg00374.html
2014-03-21 Hui Zhu <hui@codesourcery.com>
Pedro Alves <palves@redhat.com>
* darwin-nat.c (darwin_pid_to_exec_file): Change xmalloc to
static buffer.
* fbsd-nat.c (fbsd_pid_to_exec_file): Ditto.
* linux-nat.c (linux_child_pid_to_exec_file): Ditto.
* nbsd-nat.c (nbsd_pid_to_exec_file): Ditto.
Diffstat (limited to 'gdb/linux-nat.c')
| -rw-r--r-- | gdb/linux-nat.c | 18 |
1 files changed, 7 insertions, 11 deletions
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c index b615423..d08cb13 100644 --- a/gdb/linux-nat.c +++ b/gdb/linux-nat.c @@ -4011,19 +4011,15 @@ linux_nat_thread_name (struct target_ops *self, struct thread_info *thr) static char * linux_child_pid_to_exec_file (struct target_ops *self, int pid) { - char *name1, *name2; + static char buf[PATH_MAX]; + char name[PATH_MAX]; - name1 = xmalloc (PATH_MAX); - name2 = xmalloc (PATH_MAX); - make_cleanup (xfree, name1); - make_cleanup (xfree, name2); - memset (name2, 0, PATH_MAX); + xsnprintf (name, PATH_MAX, "/proc/%d/exe", pid); + memset (buf, 0, PATH_MAX); + if (readlink (name, buf, PATH_MAX - 1) <= 0) + strcpy (buf, name); - xsnprintf (name1, PATH_MAX, "/proc/%d/exe", pid); - if (readlink (name1, name2, PATH_MAX - 1) > 0) - return name2; - else - return name1; + return buf; } /* Records the thread's register state for the corefile note |