[binutils-gdb] [gdb/testsuite] Fix gdb.server/connect-with-no-symbol-file.exp for remote target

[Tom de Vries]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3581f5e4f7c903b53e25c5b8840fa4771ca139aa

commit 3581f5e4f7c903b53e25c5b8840fa4771ca139aa
Author: Tom de Vries <tdevries@suse.de>
Date:   Thu Mar 9 10:45:03 2023 +0100

    [gdb/testsuite] Fix gdb.server/connect-with-no-symbol-file.exp for remote target
    
    Test-case gdb.server/connect-with-no-symbol-file.exp fails with target board
    remote-gdbserver-on-localhost.
    
    The problem is here:
    ...
           set target_exec [gdb_remote_download target $binfile.bak $binfile]
    ...
    A "gdb_remote_download target" copies from build to target.  So $binfile is
    assumed to be a target path, but it's actually a build path.
    
    Fix this by:
    - fist copying $binfile.bak to $binfile, and
    - simply doing [gdb_remote_download target $binfile].
    
    Then, $binfile.bak is created here:
    ...
     # Make sure we have the original symbol file in a safe place to copy from.
     gdb_remote_download host $binfile $binfile.bak
    ...
    and since "gdb_remote_download host" copies from build to host, $binfile.bak
    is assumed to be a host path, but it's actually a build path.  This happens to
    cause no problems in this configuration (because build == host), but it would
    for a remote host configuration.
    
    So let's fix this by making build rather than host the "safe place to copy
    from".
    
    Tested on x86_64-linux.

Diff:
---
 gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp b/gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp
index b98e566e2d6..efddccd2a19 100644
--- a/gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp
+++ b/gdb/testsuite/gdb.server/connect-with-no-symbol-file.exp
@@ -43,8 +43,11 @@ proc connect_no_symbol_file { sysroot action } {
     global binfile
 
     with_test_prefix "setup" {
+	# Restore original $binfile.
+	gdb_remote_download build $binfile.bak $binfile
+
 	# Copy the symbol file to the target.
-	set target_exec [gdb_remote_download target $binfile.bak $binfile]
+	set target_exec [gdb_remote_download target $binfile]
 
 	# Make sure we're disconnected, in case we're testing with an
 	# extended-remote board, therefore already connected.
@@ -89,7 +92,7 @@ proc connect_no_symbol_file { sysroot action } {
 }
 
 # Make sure we have the original symbol file in a safe place to copy from.
-gdb_remote_download host $binfile $binfile.bak
+gdb_remote_download build $binfile $binfile.bak
 
 # Start with no executable loaded.
 clean_restart