elf: Check if the first symbol version is base version

Check VER_FLG_BASE instead of assuming that the first symbol version is
base version.

bfd/

	PR binutils/23267
	* elf.c (_bfd_elf_get_symbol_version_string): Check if the first
	symbol version is base version.

binutils/

	PR binutils/23267
	* readelf.c (get_symbol_version_string): Check if the first
	symbol version is base version.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 2aa411d..06498a5 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2018-06-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+       PR binutils/23267
+       * elf.c (_bfd_elf_get_symbol_version_string): Check if the first
+       symbol version is base version.
+
 2018-06-14  Alan Modra  <amodra@gmail.com>
 
        * elf-bfd.h (struct elf_link_hash_table): Add "dynamic_relocs".

diff --git a/bfd/elf.c b/bfd/elf.c
index 6c66bbc..0f75375 100644 (file)
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -1865,7 +1865,10 @@ _bfd_elf_get_symbol_version_string (bfd *abfd, asymbol *symbol,
 
       if (vernum == 0)
        version_string = "";
-      else if (vernum == 1)
+      else if (vernum == 1
+              && (vernum > elf_tdata (abfd)->cverdefs
+                  || (elf_tdata (abfd)->verdef[0].vd_flags
+                      == VER_FLG_BASE)))
        version_string = "Base";
       else if (vernum <= elf_tdata (abfd)->cverdefs)
        version_string =

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 0ec847f..d50ecb9 100644 (file)
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,9 @@
+2018-06-14  H.J. Lu  <hongjiu.lu@intel.com>
+
+       PR binutils/23267
+       * readelf.c (get_symbol_version_string): Check if the first
+       symbol version is base version.
+
 2018-06-13  Scott Egerton  <scott.egerton@imgtec.com>
            Faraz Shahbazker  <Faraz.Shahbazker@mips.com>
 

diff --git a/binutils/readelf.c b/binutils/readelf.c
index 3af729f..2188b25 100644 (file)
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -11266,7 +11266,7 @@ get_symbol_version_string (Filedata *                   filedata,
 
   vers_data = byte_get (data, 2);
 
-  if ((vers_data & VERSYM_HIDDEN) == 0 && vers_data <= 1)
+  if ((vers_data & VERSYM_HIDDEN) == 0 && vers_data == 0)
     return NULL;
 
   /* Usually we'd only see verdef for defined symbols, and verneed for
@@ -11301,12 +11301,14 @@ get_symbol_version_string (Filedata *                   filedata,
              ivd.vd_ndx = 0;
              ivd.vd_aux = 0;
              ivd.vd_next = 0;
+             ivd.vd_flags = 0;
            }
          else
            {
              ivd.vd_ndx = BYTE_GET (evd.vd_ndx);
              ivd.vd_aux = BYTE_GET (evd.vd_aux);
              ivd.vd_next = BYTE_GET (evd.vd_next);
+             ivd.vd_flags = BYTE_GET (evd.vd_flags);
            }
 
          off += ivd.vd_next;
@@ -11315,6 +11317,9 @@ get_symbol_version_string (Filedata *                   filedata,
 
       if (ivd.vd_ndx == (vers_data & VERSYM_VERSION))
        {
+         if (ivd.vd_ndx == 1 && ivd.vd_flags == VER_FLG_BASE) 
+           return NULL;
+
          off -= ivd.vd_next;
          off += ivd.vd_aux;