[PATCH v2 2/2] gdb/testsuite: reduce gdb.threads/threadcrash.exp reliance on libc symbols

[Guinevere Larsen <blarsen@redhat.com>]

The test gdb.threads/threadcrash.exp demanded GDB to fully unwind and
print the names of all functions. However, some of the functions are
from the libc library, and so the test implicitly demanded libc symbols
to be available, and would fail otherwise, as was raised in PR
gdb/31293.

This commit changes it so we only explicitly check for functions that
are provided by threadcrash.c to fix that

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31293
---
 gdb/testsuite/gdb.threads/threadcrash.exp | 17 +++++++----------
 1 file changed, 7 insertions(+), 10 deletions(-)

diff --git a/gdb/testsuite/gdb.threads/threadcrash.exp b/gdb/testsuite/gdb.threads/threadcrash.exp
index 6c638838043..3905ad6f936 100644
--- a/gdb/testsuite/gdb.threads/threadcrash.exp
+++ b/gdb/testsuite/gdb.threads/threadcrash.exp
@@ -57,26 +57,23 @@ proc thread_apply_all {} {
 		exp_continue
 	    }
 	    -re "\[^\n\]*syscall_task .location=SIGNAL_ALT_STACK\[^\n\]*" {
-		lappend test_list [multi_line ".*sleep.*" \
-					      ".*do_syscall_task .location=SIGNAL_ALT_STACK.*" \
+		lappend test_list [multi_line ".*do_syscall_task .location=SIGNAL_ALT_STACK.*" \
 					      ".*signal_handler.*" \
 					      ".*signal handler called.*" \
-					      ".*pthread_kill.*" \
+					      ".*" \
 					      ".*thread_function.*"]
 		exp_continue
 	    }
 	    -re "\[^\n\]*syscall_task .location=SIGNAL_HANDLER\[^\n\]*" {
-		lappend test_list [multi_line ".*sleep.*" \
-					      ".*do_syscall_task .location=SIGNAL_HANDLER.*" \
+		lappend test_list [multi_line ".*do_syscall_task .location=SIGNAL_HANDLER.*" \
 					      ".*signal_handler.*" \
 					      ".*signal handler called.*" \
-					      ".*pthread_kill.*" \
+					      ".*" \
 					      ".*thread_function.*"]
 		exp_continue
 	    }
 	    -re "\[^\n\]*syscall_task .location=NORMAL\[^\n\]*" {
-		lappend test_list [multi_line ".*sleep.*" \
-					      ".*do_syscall_task .location=NORMAL.*" \
+		lappend test_list [multi_line ".*do_syscall_task .location=NORMAL.*" \
 					      ".*thread_function.*"]
 		exp_continue
 	    }
@@ -84,7 +81,7 @@ proc thread_apply_all {} {
 		lappend test_list [multi_line ".*do_spin_task .location=SIGNAL_ALT_STACK.*" \
 					      ".*signal_handler.*" \
 					      ".*signal handler called.*" \
-					      ".*pthread_kill.*" \
+					      ".*" \
 					      ".*thread_function.*"]
 		exp_continue
 	    }
@@ -92,7 +89,7 @@ proc thread_apply_all {} {
 		lappend test_list [multi_line ".*do_spin_task .location=SIGNAL_HANDLER.*" \
 					      ".*signal_handler.*" \
 					      ".*signal handler called.*" \
-					      ".*pthread_kill.*" \
+					      ".*" \
 					      ".*thread_function.*"]
 		exp_continue
 	    }
-- 
2.43.0