backends: Fix arm_machine_flag_name version string.

arm_machine_flag_name checks the version byte and if not zero returns
a version string. There are only 5 versions defined. So check the
version byte is not larger.

	* backends/arm_machineflagname.c (arm_machine_flag_name):
	Check version <= 0, otherwise return NULL.

https://sourceware.org/bugzilla/show_bug.cgi?id=31058

Signed-off-by: Mark Wielaard <mark@klomp.org>

diff --git a/backends/arm_machineflagname.c b/backends/arm_machineflagname.c
index e93092aeec1be4f521879de773f3bbdd57d0df34..d700d5f4b1f03c3cd0d3204bb45774259547fe9a 100644 (file)
--- a/backends/arm_machineflagname.c
+++ b/backends/arm_machineflagname.c
@@ -48,7 +48,7 @@ arm_machine_flag_name (Elf64_Word orig, Elf64_Word *flagref)
          "Version5 EABI",
         };
       *flagref &= ~((Elf64_Word) EF_ARM_EABIMASK);
-      return vername[version - 1];
+      return version <= 5 ? vername[version - 1] : NULL;
     }
   switch (EF_ARM_EABI_VERSION (orig))
     {