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Fix linker error found when compiling glibc with a mismatched gcc.

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* dwarf2.c (scan_unit_for_symbols, case DT_AT_location): Verify that
DW_OP_addr is only opcode in location before using it.
This commit is contained in:
Jim Wilson 2005-08-10 23:33:39 +00:00
parent 38975f9eab
commit 98b880f44f
2 changed files with 16 additions and 3 deletions
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14
bfd/dwarf2.c
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@ -1782,9 +1782,17 @@ scan_unit_for_symbols (struct comp_unit *unit)
if (*attr.u.blk->data == DW_OP_addr)
{
var->stack = 0;
var->addr = bfd_get ((attr.u.blk->size - 1) * 8,
unit->abfd,
attr.u.blk->data + 1);
/* Verify that DW_OP_addr is the only opcode in the
location, in which case the block size will be 1
plus the address size. */
/* ??? For TLS variables, gcc can emit
DW_OP_addr <addr> DW_OP_GNU_push_tls_address
which we don't handle here yet. */
if (attr.u.blk->size == unit->addr_size + 1U)
var->addr = bfd_get (unit->addr_size * 8,
unit->abfd,
attr.u.blk->data + 1);
}
break;