[binutils-gdb] gdb: remove empty clear_solib functions

[Simon Marchi]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6fe4d5bf18512798b3a685599bfcff5aab3f798e

commit 6fe4d5bf18512798b3a685599bfcff5aab3f798e
Author: Simon Marchi <simon.marchi@efficios.com>
Date:   Mon Oct 2 14:52:09 2023 -0400

    gdb: remove empty clear_solib functions
    
    Make the target_so_ops::clear_solib method optional, remove two empty
    implementations.
    
    Change-Id: Ifda297d50c74327d337091c58cdb5b3b60382591
    Approved-By: Pedro Alves <pedro@palves.net>
    Reviewed-By: Reviewed-By: Lancelot Six <lancelot.six@amd.com>

Diff:
---
 gdb/solib-aix.c    | 10 +---------
 gdb/solib-target.c |  8 +-------
 gdb/solib.c        |  6 ++++--
 3 files changed, 6 insertions(+), 18 deletions(-)

diff --git a/gdb/solib-aix.c b/gdb/solib-aix.c
index fd6b1e7a454..0b6ad83eed9 100644
--- a/gdb/solib-aix.c
+++ b/gdb/solib-aix.c
@@ -373,14 +373,6 @@ solib_aix_free_so (struct so_list *so)
   delete li;
 }
 
-/* Implement the "clear_solib" target_so_ops method.  */
-
-static void
-solib_aix_clear_solib (void)
-{
-  /* Nothing needed.  */
-}
-
 /* Compute and return the OBJFILE's section_offset array, using
    the associated loader info (INFO).  */
 
@@ -715,7 +707,7 @@ const struct target_so_ops solib_aix_so_ops =
   solib_aix_relocate_section_addresses,
   solib_aix_free_so,
   nullptr,
-  solib_aix_clear_solib,
+  nullptr,
   solib_aix_solib_create_inferior_hook,
   solib_aix_current_sos,
   solib_aix_open_symbol_file_object,
diff --git a/gdb/solib-target.c b/gdb/solib-target.c
index ca9478f2ec3..865235de299 100644
--- a/gdb/solib-target.c
+++ b/gdb/solib-target.c
@@ -281,12 +281,6 @@ solib_target_solib_create_inferior_hook (int from_tty)
   /* Nothing needed.  */
 }
 
-static void
-solib_target_clear_solib (void)
-{
-  /* Nothing needed.  */
-}
-
 static void
 solib_target_free_so (struct so_list *so)
 {
@@ -440,7 +434,7 @@ const struct target_so_ops solib_target_so_ops =
   solib_target_relocate_section_addresses,
   solib_target_free_so,
   nullptr,
-  solib_target_clear_solib,
+  nullptr,
   solib_target_solib_create_inferior_hook,
   solib_target_current_sos,
   solib_target_open_symbol_file_object,
diff --git a/gdb/solib.c b/gdb/solib.c
index a2a8a031f34..e8211814283 100644
--- a/gdb/solib.c
+++ b/gdb/solib.c
@@ -1240,7 +1240,8 @@ clear_solib (void)
       free_so (so);
     }
 
-  ops->clear_solib ();
+  if (ops->clear_solib != nullptr)
+    ops->clear_solib ();
 }
 
 /* Shared library startup support.  When GDB starts up the inferior,
@@ -1409,7 +1410,8 @@ reload_shared_libraries (const char *ignored, int from_tty,
     {
       /* Reset or free private data structures not associated with
 	 so_list entries.  */
-      ops->clear_solib ();
+      if (ops->clear_solib != nullptr)
+	ops->clear_solib ();
 
       /* Remove any previous solib event breakpoint.  This is usually
 	 done in common code, at breakpoint_init_inferior time, but