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segfault at i386-dis.c:9815

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* i386-dis.c (print_insn): Access "ins" and "priv" via volatile
	pointers after second sigsetjmp return.
This commit is contained in:
Alan Modra 2023-03-17 21:04:52 +10:30
parent 1a2c0dc1ab
commit 92d450c79a
1 changed files with 9 additions and 4 deletions
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13
opcodes/i386-dis.c
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@ -9808,12 +9808,17 @@ print_insn (bfd_vma pc, disassemble_info *info, int intel_syntax)
/* Getting here means we tried for data but didn't get it. That
means we have an incomplete instruction of some sort. Just
print the first byte as a prefix or a .byte pseudo-op. */
if (ins.codep > priv.the_buffer)
volatile struct dis_private *ppriv = &priv;
volatile instr_info *pins = &ins;
if (pins->codep > ppriv->the_buffer)
{
const char *name = NULL;
if (ins.prefixes || ins.fwait_prefix >= 0 || (ins.rex & REX_OPCODE))
name = prefix_name (&ins, priv.the_buffer[0], priv.orig_sizeflag);
if (pins->prefixes
|| pins->fwait_prefix >= 0
|| (pins->rex & REX_OPCODE))
name = prefix_name (&ins, ppriv->the_buffer[0],
ppriv->orig_sizeflag);
if (name != NULL)
i386_dis_printf (&ins, dis_style_mnemonic, "%s", name);
else
@ -9822,7 +9827,7 @@ print_insn (bfd_vma pc, disassemble_info *info, int intel_syntax)
i386_dis_printf (&ins, dis_style_assembler_directive,
".byte ");
i386_dis_printf (&ins, dis_style_immediate, "0x%x",
(unsigned int) priv.the_buffer[0]);
(unsigned int) ppriv->the_buffer[0]);
}
return 1;