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authorSiddhesh Poyarekar <siddhesh@redhat.com>2013-05-29 21:30:20 +0530
committerSiddhesh Poyarekar <siddhesh@redhat.com>2013-05-29 21:34:12 +0530
commitb937534868c8d7aec3b6d645bf5fd657bbfccd42 (patch)
tree18936faaea13f35bcaf698f97447752c0e1c4567 /sysdeps/powerpc
parentd0501bfbe228897c17875fcead8809d017135d6f (diff)
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Avoid crashing in LD_DEBUG when program name is unavailable
Resolves: #15465

The program name may be unavailable if the user application tampers
with argc and argv[].  Some parts of the dynamic linker caters for
this while others don't, so this patch consolidates the check and
fallback into a single macro and updates all users.
Diffstat (limited to 'sysdeps/powerpc')
-rw-r--r--sysdeps/powerpc/powerpc32/dl-machine.c3
-rw-r--r--sysdeps/powerpc/powerpc64/dl-machine.h3
2 files changed, 2 insertions, 4 deletions
diff --git a/sysdeps/powerpc/powerpc32/dl-machine.c b/sysdeps/powerpc/powerpc32/dl-machine.c
index bd42fdf7d5..c75c173b35 100644
--- a/sysdeps/powerpc/powerpc32/dl-machine.c
+++ b/sysdeps/powerpc/powerpc32/dl-machine.c
@@ -510,8 +510,7 @@ __process_machine_rela (struct link_map *map,
 	  strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
 	  _dl_error_printf ("\
 %s: Symbol `%s' has different size in shared object, consider re-linking\n",
-			    rtld_progname ?: "<program name unknown>",
-			    strtab + refsym->st_name);
+			    RTLD_PROGNAME, strtab + refsym->st_name);
 	}
       memcpy (reloc_addr, (char *) finaladdr, MIN (sym->st_size,
 						   refsym->st_size));
diff --git a/sysdeps/powerpc/powerpc64/dl-machine.h b/sysdeps/powerpc/powerpc64/dl-machine.h
index 14ade21d96..059fdafd53 100644
--- a/sysdeps/powerpc/powerpc64/dl-machine.h
+++ b/sysdeps/powerpc/powerpc64/dl-machine.h
@@ -734,8 +734,7 @@ elf_machine_rela (struct link_map *map,
 	  _dl_error_printf ("%s: Symbol `%s' has different size" \
 			    " in shared object," \
 			    " consider re-linking\n",
-			    rtld_progname ?: "<program name unknown>",
-			    strtab + refsym->st_name);
+			    RTLD_PROGNAME, strtab + refsym->st_name);
 	}
       memcpy (reloc_addr_arg, (char *) value,
 	      MIN (sym->st_size, refsym->st_size));