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