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Index: gdb-7.5.50.20130310/gdb/solib-svr4.c
===================================================================
--- gdb-7.5.50.20130310.orig/gdb/solib-svr4.c 2013-03-10 16:37:49.000000000 +0100
+++ gdb-7.5.50.20130310/gdb/solib-svr4.c 2013-03-10 16:43:45.498585091 +0100
@@ -1225,14 +1225,27 @@ svr4_read_so_list (CORE_ADDR lm, struct
}
{
- struct elf_build_id *build_id;
+ struct elf_build_id *build_id = NULL;
strncpy (new->so_original_name, buffer, SO_NAME_MAX_PATH_SIZE - 1);
new->so_original_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
/* May get overwritten below. */
strcpy (new->so_name, new->so_original_name);
- build_id = build_id_addr_get (new->lm_info->l_ld);
+ /* In the case the main executable was found according to its build-id
+ (from a core file) prevent loading a different build of a library
+ with accidentally the same SO_NAME.
+
+ It suppresses bogus backtraces (and prints "??" there instead) if
+ the on-disk files no longer match the running program version.
+
+ If the main executable was not loaded according to its build-id do
+ not do any build-id checking of the libraries. There may be missing
+ build-ids dumped in the core file and we would map all the libraries
+ to the only existing file loaded that time - the executable. */
+ if (symfile_objfile != NULL
+ && (symfile_objfile->flags & OBJF_BUILD_ID_CORE_LOADED) != 0)
+ build_id = build_id_addr_get (new->lm_info->l_ld);
if (build_id != NULL)
{
char *name, *build_id_filename;
@@ -1247,23 +1260,7 @@ svr4_read_so_list (CORE_ADDR lm, struct
xfree (name);
}
else
- {
- debug_print_missing (new->so_name, build_id_filename);
-
- /* In the case the main executable was found according to
- its build-id (from a core file) prevent loading
- a different build of a library with accidentally the
- same SO_NAME.
-
- It suppresses bogus backtraces (and prints "??" there
- instead) if the on-disk files no longer match the
- running program version. */
-
- if (symfile_objfile != NULL
- && (symfile_objfile->flags
- & OBJF_BUILD_ID_CORE_LOADED) != 0)
- new->so_name[0] = 0;
- }
+ debug_print_missing (new->so_name, build_id_filename);
xfree (build_id_filename);
xfree (build_id);