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[Bug binutils/5072] New: The x86 disassembler failed to dectect invalid


From: hjl at lucon dot org
Subject: [Bug binutils/5072] New: The x86 disassembler failed to dectect invalid 64bit opcode
Date: 26 Sep 2007 22:35:00 -0000

address@hidden tmp]$ cat x.s
lds    (%eax),%edx
address@hidden tmp]$ gcc -c -m32 x.s
address@hidden tmp]$ objdump -d -Mx86-64 x.o

x.o:     file format elf32-i386

Disassembly of section .text:

00000000 <.text>:
   0:   c5 10                   lds    (%rax),%edx
address@hidden tmp]$ cat y.s
lds    (%rax),%edx
address@hidden tmp]$ gcc -c y.s
y.s: Assembler messages:
y.s:1: Error: `lds' is not supported in 64-bit mode
address@hidden tmp]$

-- 
           Summary: The x86 disassembler failed to dectect invalid 64bit
                    opcode
           Product: binutils
           Version: 2.19 (HEAD)
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: hjl at lucon dot org
                CC: bug-binutils at gnu dot org


http://sourceware.org/bugzilla/show_bug.cgi?id=5072

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