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* linux-thread-db.c (find_new_threads_callback): Exit on zero TI_TID
	even if !TARGET_HAS_EXECUTION.

gdb/testsuite/
	* gdb.threads/gcore-thread.exp ($core0file): New variable.
	(clear __stack_user.next, clear stack_used.next)
	(save a zeroed-threads corefile): New test.
	Call core_load for $core0file.
	(zeroed-threads cannot be listed): New test.
This commit is contained in:
Jan Kratochvil 2011-04-17 19:11:07 +00:00
parent 4fe85f5c27
commit 254f582e7e
4 changed files with 53 additions and 5 deletions
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5
gdb/ChangeLog
View File

@ -1,3 +1,8 @@
2011-04-17 Jan Kratochvil <jan.kratochvil@redhat.com>
* linux-thread-db.c (find_new_threads_callback): Exit on zero TI_TID
even if !TARGET_HAS_EXECUTION.
2011-04-17 Jan Kratochvil <jan.kratochvil@redhat.com>
Fix convert_code_addr_to_desc_addr for ppc64 files after eu-strip.

13
gdb/linux-thread-db.c
View File

@ -1335,7 +1335,7 @@ find_new_threads_callback (const td_thrhandle_t *th_p, void *data)
if (ti.ti_state == TD_THR_UNKNOWN || ti.ti_state == TD_THR_ZOMBIE)
return 0; /* A zombie -- ignore. */
if (ti.ti_tid == 0 && target_has_execution)
if (ti.ti_tid == 0)
{
/* A thread ID of zero means that this is the main thread, but
glibc has not yet initialized thread-local storage and the
@ -1347,10 +1347,13 @@ find_new_threads_callback (const td_thrhandle_t *th_p, void *data)
need this glibc bug workaround. */
info->need_stale_parent_threads_check = 0;
err = info->td_thr_event_enable_p (th_p, 1);
if (err != TD_OK)
error (_("Cannot enable thread event reporting for LWP %d: %s"),
(int) ti.ti_lid, thread_db_err_str (err));
if (target_has_execution)
{
err = info->td_thr_event_enable_p (th_p, 1);
if (err != TD_OK)
error (_("Cannot enable thread event reporting for LWP %d: %s"),
(int) ti.ti_lid, thread_db_err_str (err));
}
return 0;
}

8
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,11 @@
2011-04-17 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.threads/gcore-thread.exp ($core0file): New variable.
(clear __stack_user.next, clear stack_used.next)
(save a zeroed-threads corefile): New test.
Call core_load for $core0file.
(zeroed-threads cannot be listed): New test.
2011-04-17 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.threads/gcore-thread.exp ($testfile): Match it the .exp

32
gdb/testsuite/gdb.threads/gcore-thread.exp
View File

@ -26,6 +26,7 @@ set testfile "gcore-thread"
set srcfile pthreads.c
set binfile ${objdir}/${subdir}/${testfile}
set corefile ${objdir}/${subdir}/${testfile}.test
set core0file ${objdir}/${subdir}/${testfile}0.test
if [istarget "*-*-linux"] then {
set target_cflags "-D_MIT_POSIX_THREADS"
@ -110,6 +111,29 @@ if {!$core_supported} {
}
# Test the uninitialized thread list.
# Provide the case of glibc td_thr_get_info handling of:
# /* Special case for the main thread before initialization. */
foreach symbol {__stack_user stack_used} {
set test "clear ${symbol}.next"
gdb_test_multiple "p *(void **) &${symbol} = 0" $test {
-re " = \\(void \\*\\) 0x0\r\n$gdb_prompt $" {
pass $test
}
-re "No symbol \"${symbol}\" in current context\\.\r\n$gdb_prompt $" {
xfail $test
# Do not do the verification.
set core0file ""
}
}
}
if {"$core0file" != ""} {
gdb_test "gcore $core0file" "Saved corefile .*" "save a zeroed-threads corefile"
}
# Now restart gdb and load the corefile.
clean_restart ${testfile}
@ -160,3 +184,11 @@ gdb_test "info threads" ".* thread2 .*" \
gdb_test "info threads" ".*${nl}\\* ${horiz} thread2 .*" \
"thread2 is current thread in corefile"
# Test the uninitialized thread list.
if {"$core0file" != "" && [load_core $core0file]} {
gdb_test "info threads" "Cannot find new threads: .*" "zeroed-threads cannot be listed"
}