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From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
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From: Kevin Buettner <kevinb@redhat.com>
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Date: Wed, 9 Jun 2021 19:31:18 -0700
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Subject: gdb-rhbz1971095-libthread_db-update-4of5.patch
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;; Backport "print-symbol-loading.exp: Allow libc symbols to be already loaded"
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;; (Kevin Buettner, RH BZ 1971095)
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One consequence of changing libpthread_name_p() in solib.c to (also)
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match libc is that the symbols for libc will now be loaded by
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solib_add() in solib.c. I think this is mostly harmless because
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we'll likely want these symbols to be loaded anyway, but it did cause
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two failures in gdb.base/print-symbol-loading.exp.
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Specifically...
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1)
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sharedlibrary .*
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(gdb) PASS: gdb.base/print-symbol-loading.exp: shlib off: load shared-lib
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now looks like this:
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sharedlibrary .*
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Symbols already loaded for /lib64/libc.so.6
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(gdb) PASS: gdb.base/print-symbol-loading.exp: shlib off: load shared-lib
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2)
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sharedlibrary .*
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Loading symbols for shared libraries: .*
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(gdb) PASS: gdb.base/print-symbol-loading.exp: shlib brief: load shared-lib
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now looks like this:
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sharedlibrary .*
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Loading symbols for shared libraries: .*
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Symbols already loaded for /lib64/libc.so.6
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(gdb) PASS: gdb.base/print-symbol-loading.exp: shlib brief: load shared-lib
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Fixing case #2 ended up being easier than #1. #1 had been using
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gdb_test_no_output to correctly match this no-output case. I
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ended up replacing it with gdb_test_multiple, matching the exact
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expected output for each of the two now acceptable cases.
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For case #2, I simply added an optional non-capturing group
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for the potential new output.
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gdb/testsuite/ChangeLog:
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* gdb.base/print-symbol-loading.exp (proc test_load_shlib):
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Allow "Symbols already loaded for..." messages.
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diff --git a/gdb/testsuite/gdb.base/print-symbol-loading.exp b/gdb/testsuite/gdb.base/print-symbol-loading.exp
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--- a/gdb/testsuite/gdb.base/print-symbol-loading.exp
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+++ b/gdb/testsuite/gdb.base/print-symbol-loading.exp
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@@ -96,6 +96,7 @@ test_load_core full
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proc test_load_shlib { print_symbol_loading } {
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global binfile
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+ global gdb_prompt
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with_test_prefix "shlib ${print_symbol_loading}" {
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clean_restart ${binfile}
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gdb_test_no_output "set auto-solib-add off"
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@@ -106,12 +107,20 @@ proc test_load_shlib { print_symbol_loading } {
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set test_name "load shared-lib"
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switch ${print_symbol_loading} {
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"off" {
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- gdb_test_no_output "sharedlibrary .*" \
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- ${test_name}
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+ set cmd "sharedlibrary .*"
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+ set cmd_regex [string_to_regexp $cmd]
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+ gdb_test_multiple $cmd $test_name {
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+ -re "^$cmd_regex\r\n$gdb_prompt $" {
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+ pass $test_name
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+ }
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+ -re "^$cmd_regex\r\nSymbols already loaded for\[^\r\n\]*\\/libc\\.\[^\r\n\]*\r\n$gdb_prompt $" {
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+ pass $test_name
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+ }
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+ }
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}
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"brief" {
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gdb_test "sharedlibrary .*" \
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- "Loading symbols for shared libraries: \\.\\*" \
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+ "Loading symbols for shared libraries: \\.\\*.*?(?:Symbols already loaded for .*?libc)?" \
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${test_name}
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}
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"full" {
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