File gdb-testsuite-fix-build-id-check-in-gdb.python-py-mi.patch of Package gdb

From b29fe2547e14caabc04ff35f0dc3b2ed9043bbd0 Mon Sep 17 00:00:00 2001
From: Tom de Vries <tdevries@suse.de>
Date: Thu, 20 Nov 2025 21:54:47 +0100
Subject: [PATCH 07/25] [gdb/testsuite] Fix build-id check in
 gdb.python/py-missing-objfile.exp

I recently added two requires in test-case gdb.python/py-missing-objfile.exp:
...
require {expect_build_id_in_core_file $binfile}
require {expect_build_id_in_core_file $libfile}
...

However, at the point where the check is done, the files are no longer
available at that location, which makes the require fail.

First, make the problem visible, by making proc expect_build_id_in_core_file
throw an error if the filename argument specifies a non-existing file.

Then, fix test-case gdb.python/py-missing-objfile.exp by moving the calls to
expect_build_id_in_core_file to a point where the files exist.

Tested on x86_64-linux.
---
 gdb/testsuite/gdb.python/py-missing-objfile.exp | 9 +++++++--
 gdb/testsuite/lib/gdb.exp                       | 4 ++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/gdb/testsuite/gdb.python/py-missing-objfile.exp b/gdb/testsuite/gdb.python/py-missing-objfile.exp
index 2786bdfb2ed..9ecf53a7024 100644
--- a/gdb/testsuite/gdb.python/py-missing-objfile.exp
+++ b/gdb/testsuite/gdb.python/py-missing-objfile.exp
@@ -34,6 +34,11 @@ if { [build_executable "build exec" $binfile $srcfile $opts] == -1} {
     return
 }
 
+set expect_build_id_in_core_file_binfile \
+    [expect_build_id_in_core_file $binfile]
+set expect_build_id_in_core_file_libfile \
+    [expect_build_id_in_core_file $libfile]
+
 # The cc-with-gnu-debuglink board will split the debug out into the
 # .debug directory.  This test script relies on having GDB lookup the
 # objfile and debug via the build-id, which this test sets up.  Trying
@@ -185,8 +190,8 @@ with_test_prefix "no objfiles available" {
 
 # The following tests assume that the build-ids of binfile and libfile can be
 # found in the core file.
-require {expect_build_id_in_core_file $binfile}
-require {expect_build_id_in_core_file $libfile}
+require {expr $expect_build_id_in_core_file_binfile}
+require {expr $expect_build_id_in_core_file_libfile}
 
 with_test_prefix "all objfiles available" {
     # Another sanity check that GDB can find the files via the
diff --git a/gdb/testsuite/lib/gdb.exp b/gdb/testsuite/lib/gdb.exp
index 47cff389a41..ac1de76a696 100644
--- a/gdb/testsuite/lib/gdb.exp
+++ b/gdb/testsuite/lib/gdb.exp
@@ -11057,6 +11057,10 @@ gdb_caching_proc root_user {} {
 # Otherwise, return false.
 
 proc expect_build_id_in_core_file { filename } {
+    if {![file exists $filename]} {
+	error "File not found: $filename"
+    }
+
     # I'm not sure if other kernels take care to add the first page of
     # each ELF into the core file.  If they do then this test can be
     # relaxed.
-- 
2.51.0