Respect piece offset for DW_OP_bit_piece
authorAndreas Arnez <arnez@linux.vnet.ibm.com>
Tue, 13 Jun 2017 13:20:31 +0000 (15:20 +0200)
committerAndreas Arnez <arnez@linux.vnet.ibm.com>
Tue, 13 Jun 2017 13:20:31 +0000 (15:20 +0200)
commit65d84b76164dc8ec1a1f0f0e0fd41667065ffd4e
tree3bb8e597b3dcb26f838f662b86b003cf6bece183
parent242d31ab7c3901e02bd68c1824d1d3610e02562b
Respect piece offset for DW_OP_bit_piece

So far GDB ignores the piece offset of all kinds of DWARF bit
pieces (DW_OP_bit_piece) and treats such pieces as if the offset was zero.

This is fixed, and an appropriate test is added.

gdb/ChangeLog:

* dwarf2loc.c (read_pieced_value): Respect the piece offset, as
given by DW_OP_bit_piece.
(write_pieced_value): Likewise.

  Andreas Arnez  <arnez@linux.vnet.ibm.com>

* gdb.dwarf2/var-access.exp: Add test for composite location with
nonzero piece offsets.
gdb/ChangeLog
gdb/dwarf2loc.c
gdb/testsuite/gdb.dwarf2/var-access.exp
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