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| author |   Jan Kratochvil <jan.kratochvil@redhat.com> | 2011-10-12 22:04:12 +0000 |
|---|---|---|
| committer | Jan Kratochvil <jan.kratochvil@redhat.com> | 2011-10-12 22:04:12 +0000 |
| commit | 1d6edc3c37dc30e5fe46f25fa4d4974c78b60e5b (patch) | |
| tree | b22379c4a6713e9b18cadfe2f42f05a4871cb0b6 /gdb/dwarf2loc.h | |
| parent | * as.c (main): Define .gasversion. rather than __GAS_VERSION__. (diff) | |
| download | binutils-gdb-1d6edc3c37dc30e5fe46f25fa4d4974c78b60e5b.tar.gz binutils-gdb-1d6edc3c37dc30e5fe46f25fa4d4974c78b60e5b.tar.bz2 binutils-gdb-1d6edc3c37dc30e5fe46f25fa4d4974c78b60e5b.zip | |
gdb/
Fix empty DWARF expressions DATA vs. SIZE conditionals.
* dwarf2loc.c (dwarf2_find_location_expression): Clear *LOCEXPR_LENGTH.
(dwarf_expr_frame_base_1): Indicate unavailability via zero *LENGTH.
(locexpr_tracepoint_var_ref): Check only zero SIZE, not zero DATA.
(loclist_read_variable, loclist_tracepoint_var_ref): Do not check for
zero DATA.
* dwarf2loc.h (struct dwarf2_locexpr_baton): Comment DATA vs. SIZE
validity.
* dwarf2read.c (struct dwarf_block): Comment DATA validity.
(dwarf2_fetch_die_location_block, dwarf2_symbol_mark_computed): Do not
clear DATA on zero SIZE.
gdb/testsuite/
Fix empty DWARF expressions DATA vs. SIZE conditionals.
* gdb.dwarf2/dw2-op-call.S (arraycallnoloc, arraynoloc): New DIEs.
(loclist): New.
(4): New abbrev.
* gdb.dwarf2/dw2-op-call.exp: Remove variable srcfile and executable.
Use prepare_for_testing, remove clean_restart.
(p arraynoloc, p arraycallnoloc): New tests.
Diffstat (limited to 'gdb/dwarf2loc.h')
| -rw-r--r-- | gdb/dwarf2loc.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gdb/dwarf2loc.h b/gdb/dwarf2loc.h index 32aa0af3dfc..819679191e1 100644 --- a/gdb/dwarf2loc.h +++ b/gdb/dwarf2loc.h @@ -87,10 +87,12 @@ struct value *dwarf2_evaluate_loc_desc (struct type *type, struct dwarf2_locexpr_baton { - /* Pointer to the start of the location expression. */ + /* Pointer to the start of the location expression. Valid only if SIZE is + not zero. */ const gdb_byte *data; - /* Length of the location expression. */ + /* Length of the location expression. For optimized out expressions it is + zero. */ unsigned long size; /* The compilation unit containing the symbol whose location |