When building the location list for a variable that has been optimized
by SRA, dw_sra_loc_expr sometimes creates a DWARF expression or a
piece of an expression, but then abandons it for some reason. When
abandoning it, we neglected to release any addr_table entries created
for DW_OP_addr_index opcodes, occasionally resulting in a link-time
unresolved symbol. This patch releases the addr_table entries before
abandoning a location expression.
Backported from trunk r203206.
Google ref b/10833306.
2013-10-03 Cary Coutant <ccout...@google.com>
gcc/
* dwarf2out.c (dw_sra_loc_expr): Release addr_table entries when
discarding a location list expression (or a piece of one).
