gas/

2008-03-03  Denys Vlasenko <vda.linux@googlemail.com>
	    H.J. Lu  <hongjiu.lu@intel.com>

	PR gas/5543
	* read.c (pseudo_set): Don't allow global register symbol.

	* symbols.c (S_SET_EXTERNAL): Don't allow register symbol
	global.

2008-03-03  H.J. Lu  <hongjiu.lu@intel.com>

	PR gas/5543
	* write.c (write_object_file): Don't allow symbols which were
	equated to register.  Stop if there is an error.

gas/testsuite/

2008-03-03  H.J. Lu  <hongjiu.lu@intel.com>

	PR gas/5543
	* gas/i386/i386.exp: Run inval-equ-1 and inval-equ-2.

	* gas/i386/inval-equ-1.l: New.
	* gas/i386/inval-equ-1.s: Likewise.
	* gas/i386/inval-equ-2.l: Likewise.
	* gas/i386/inval-equ-2.s: Likewise.

1 files changed, 6 insertions, 0 deletions

diff --git a/gas/read.c b/gas/read.c
index ed3be37..8163c5a 100644
--- a/gas/read.c
+++ b/gas/read.c
@@ -3604,6 +3604,12 @@ pseudo_set (symbolS *symbolP)
       break;
 
     case O_register:
+      if (S_IS_EXTERNAL (symbolP))
+	{
+	  as_bad ("can't equate global symbol `%s' with register name",
+		  S_GET_NAME (symbolP));
+	  return;
+	}
       S_SET_SEGMENT (symbolP, reg_section);
       S_SET_VALUE (symbolP, (valueT) exp.X_add_number);
       set_zero_frag (symbolP);