Fix elf64-ppc.c electric fence warning

	* elf64-ppc.c (ppc64_elf_get_synthetic_symtab): Return count of 0
	on nothing to do, before malloc of returned symbol array.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index b24c72d..9173e17 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,8 @@
+2015-03-17  Alan Modra  <amodra@gmail.com>
+
+       * elf64-ppc.c (ppc64_elf_get_synthetic_symtab): Return count of 0
+       on nothing to do, before malloc of returned symbol array.
+
 2015-03-16  Nick Clifton  <nickc@redhat.com>
 
        * elf32-rx.c (elf32_rx_relax_delete_bytes): If the relocs are not

diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index 90c2cc0..60f8b6e 100644 (file)
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -3146,7 +3146,8 @@ section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr)
 }
 
 /* Create synthetic symbols, effectively restoring "dot-symbol" function
-   entry syms.  Also generate @plt symbols for the glink branch table.  */
+   entry syms.  Also generate @plt symbols for the glink branch table.
+   Returns count of synthetic symbols in RET or -1 on error.  */
 
 static long
 ppc64_elf_get_synthetic_symtab (bfd *abfd,
@@ -3289,6 +3290,8 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
            }
        }
 
+      if (size == 0)
+       goto done;
       s = *ret = bfd_malloc (size);
       if (s == NULL)
        {
@@ -3349,10 +3352,11 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
 
       if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
        {
+       free_contents_and_exit_err:
+         count = -1;
        free_contents_and_exit:
          if (contents)
            free (contents);
-         count = -1;
          goto done;
        }
 
@@ -3383,7 +3387,7 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
          void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
 
          if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf))
-           goto free_contents_and_exit;
+           goto free_contents_and_exit_err;
 
          extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
          swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
@@ -3445,7 +3449,7 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
            {
              slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
              if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE))
-               goto free_contents_and_exit;
+               goto free_contents_and_exit_err;
 
              plt_count = relplt->size / sizeof (Elf64_External_Rela);
              size += plt_count * sizeof (asymbol);
@@ -3460,9 +3464,11 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
            }
        }
 
+      if (size == 0)
+       goto free_contents_and_exit;
       s = *ret = bfd_malloc (size);
       if (s == NULL)
-       goto free_contents_and_exit;
+       goto free_contents_and_exit_err;
 
       names = (char *) (s + count + plt_count + (resolv_vma != 0));