When trying to run the test gdb.cp/cpexprs-debug-types.exp using clang, I run into 95 failures. It seems that searching for class methods is broken. These are the first few failures:

(gdb) PASS: gdb.cp/cpexprs-debug-types.exp: set listsize 1
print base1::a_function^M                                           
There is no field named a_function^M                                
(gdb) FAIL: gdb.cp/cpexprs-debug-types.exp: print base1::a_function 
print base1::base1(int)^M                                           
There is no field named base1^M                                     
(gdb) FAIL: gdb.cp/cpexprs-debug-types.exp: print base1::base1(int) 
print base1::base1(void)^M                                          
There is no field named base1^M                                     
(gdb) FAIL: gdb.cp/cpexprs-debug-types.exp: print base1::base1(void)
print base2::a_function^M                                           
There is no field named a_function^M                                
(gdb) FAIL: gdb.cp/cpexprs-debug-types.exp: print base2::a_function 

This started happening with commit: 

commit c879f4dc3e317cf6353a45a803ecf00d577a13d8                 
Author: Tom Tromey <tom@tromey.com>                                     
Date:   Tue Dec 31 13:30:18 2024 -0700                                  
                                                                        
    Convert lookup_symbol_via_quick_fns                                 
                                                                        
    This converts lookup_symbol_via_quick_fns to the callback approach, 
    merging the search loop and the call to expand_symtabs_matching.    
                                                                        
    Note that this changes lookup_symbol_via_quick_fns to use a         
    best_symbol_tracker.  Before this patch there was a discrepancy here
    between the two search functions.                                   
                                                                        
    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=16994          
    Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=16998          
    Acked-By: Simon Marchi <simon.marchi@efficios.com>