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* [binutils-gdb] [gdb/testsuite] Fix probe test in gdb.base/break-interp.exp
@ 2021-09-23 20:42 Tom de Vries
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From: Tom de Vries @ 2021-09-23 20:42 UTC (permalink / raw)
To: gdb-cvs
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=508109612f99513f523e2295d86133a71418c010
commit 508109612f99513f523e2295d86133a71418c010
Author: Tom de Vries <tdevries@suse.de>
Date: Thu Sep 23 22:42:10 2021 +0200
[gdb/testsuite] Fix probe test in gdb.base/break-interp.exp
When running test-case gdb.base/break-interp.exp on ubuntu 18.04.5, we have:
...
(gdb) bt^M
#0 0x00007eff7ad5ae12 in ?? () from break-interp-LDprelinkNOdebugNO^M
#1 0x00007eff7ad71f50 in ?? () from break-interp-LDprelinkNOdebugNO^M
#2 0x00007eff7ad59128 in ?? () from break-interp-LDprelinkNOdebugNO^M
#3 0x00007eff7ad58098 in ?? () from break-interp-LDprelinkNOdebugNO^M
#4 0x0000000000000002 in ?? ()^M
#5 0x00007fff505d7a32 in ?? ()^M
#6 0x00007fff505d7a94 in ?? ()^M
#7 0x0000000000000000 in ?? ()^M
(gdb) FAIL: gdb.base/break-interp.exp: ldprelink=NO: ldsepdebug=NO: \
first backtrace: dl bt
...
Using the backtrace, the test-case tries to establish that we're stopped in
dl_main.
However, the backtrace only shows an address, because:
- the dynamic linker contains no minimal symbols and no debug info, and
- gdb is build without --with-separate-debug-dir so it can't find the
corresponding .debug file, which does contain the mimimal symbols and
debug info.
As in "[gdb/testsuite] Improve probe detection in gdb.base/break-probes.exp",
fix this by doing info probes and grepping for the address.
Tested on x86_64-linux.
Diff:
---
gdb/testsuite/gdb.base/break-interp.exp | 34 ++++++++++++++++++++++++++++++++-
1 file changed, 33 insertions(+), 1 deletion(-)
diff --git a/gdb/testsuite/gdb.base/break-interp.exp b/gdb/testsuite/gdb.base/break-interp.exp
index 545e365b8b5..fd2b166de5d 100644
--- a/gdb/testsuite/gdb.base/break-interp.exp
+++ b/gdb/testsuite/gdb.base/break-interp.exp
@@ -84,6 +84,16 @@ gdb_test_multiple $test $test {
}
set interp_system [section_get [standard_output_file $binfile_test] .interp]
+clean_restart $interp_system
+set dl_main_found 0
+gdb_test_multiple "info addr dl_main" "" {
+ -re -wrap "Symbol \"dl_main\" is a function at address $hex\\." {
+ set dl_main_found 1
+ }
+ -re -wrap "No symbol \"dl_main\" in current context\\." {
+ }
+}
+
set interp_system_debug [system_debug_get $interp_system]
verbose -log "$interp_system has debug $interp_system_debug"
@@ -381,6 +391,7 @@ proc test_attach {file displacement {relink_args ""}} {
proc test_ld {file ifmain trynosym displacement} {
global srcdir subdir gdb_prompt expect_out inferior_exited_re solib_bp
+ global hex dl_main_found
# First test normal `file'-command loaded $FILE with symbols.
@@ -413,7 +424,28 @@ proc test_ld {file ifmain trynosym displacement} {
with_test_prefix "first backtrace" {
gdb_test_no_output "set verbose off"
- gdb_test "bt" "#0 +\[^\r\n\]*\\m(__GI_)?$solib_bp\\M.*" "dl bt"
+ gdb_test_multiple "bt" "dl bt" {
+ -re -wrap "#0 +\[^\r\n\]*\\m(__GI_)?$solib_bp\\M.*" {
+ pass $gdb_test_name
+ }
+ -re -wrap "#0 ($hex) .*" {
+ if { $dl_main_found } {
+ fail $gdb_test_name
+ } else {
+ set pc $expect_out(1,string)
+ regsub "0x0*" $pc "" pc
+ gdb_test "p /x 0x$pc" ".*"
+ gdb_test_multiple "info probes stap rtld" $gdb_test_name {
+ -re -wrap "(?:init_start|init_complete) +0x0*$pc .*" {
+ pass $gdb_test_name
+ }
+ -re -wrap "" {
+ fail $gdb_test_name
+ }
+ }
+ }
+ }
+ }
gdb_test_no_output "set verbose on"
}
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