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[binutils-gdb] Fix erroneous cleanup use in add_solib_catchpoint


https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=36bd8eaaa0afe3ff8e8b1b1b9edc9686f5c159e6

commit 36bd8eaaa0afe3ff8e8b1b1b9edc9686f5c159e6
Author: Tom Tromey <tom@tromey.com>
Date:   Sat Aug 19 22:15:30 2017 -0600

    Fix erroneous cleanup use in add_solib_catchpoint
    
    I happened to notice that add_solib_catchpoint allocated the new
    catchpoint with "new" but installed a cleanup using "xfree".  This
    patch fixes the bug by changing the function to use std::unique_ptr
    instead.
    
    ChangeLog
    2017-08-22  Tom Tromey  <tom@tromey.com>
    
    	* breakpoint.c (add_solib_catchpoint): Use std::unique_ptr.

Diff:
---
 gdb/ChangeLog    |  4 ++++
 gdb/breakpoint.c | 10 +++-------
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index e291719..1cd0eaa 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,9 @@
 2017-08-22  Tom Tromey  <tom@tromey.com>
 
+	* breakpoint.c (add_solib_catchpoint): Use std::unique_ptr.
+
+2017-08-22  Tom Tromey  <tom@tromey.com>
+
 	* psymtab.c (psymtab_search_name): Return a unique_xmalloc_ptr.
 	(lookup_partial_symbol): Update.
 
diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index bc681cf..135741a 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -8464,16 +8464,13 @@ static struct breakpoint_ops catch_solib_breakpoint_ops;
 void
 add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled)
 {
-  struct solib_catchpoint *c;
   struct gdbarch *gdbarch = get_current_arch ();
-  struct cleanup *cleanup;
 
   if (!arg)
     arg = "";
   arg = skip_spaces_const (arg);
 
-  c = new solib_catchpoint ();
-  cleanup = make_cleanup (xfree, c);
+  std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ());
 
   if (*arg != '\0')
     {
@@ -8483,13 +8480,12 @@ add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled)
     }
 
   c->is_load = is_load;
-  init_catchpoint (c, gdbarch, is_temp, NULL,
+  init_catchpoint (c.get (), gdbarch, is_temp, NULL,
 		   &catch_solib_breakpoint_ops);
 
   c->enable_state = enabled ? bp_enabled : bp_disabled;
 
-  discard_cleanups (cleanup);
-  install_breakpoint (0, c, 1);
+  install_breakpoint (0, c.release (), 1);
 }
 
 /* A helper function that does all the work for "catch load" and


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