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Fix the BFD library's find_nearest_line feature to produce consistent results.

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PR 30150
 * dwarf2.c (comp_unit_contains_address): Renamed to ... (comp_unit_may_contain_address): this,
 and added code to return true if the CU's ranges have not yet been computed.
 (_bfd_dwarf2_find_nearest_line_with_alt): Use the renamed function, simplifying code in the process.
This commit is contained in:
Nick Clifton
2023-02-23 09:44:50 +00:00
parent 456481c6d6
commit e0b74a85b8
2 changed files with 21 additions and 15 deletions
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10
bfd/ChangeLog
View File

@ -1,3 +1,13 @@
2023-02-23 Nick Clifton <nickc@redhat.com>
Alan Modra <amodra@gmail.com>
PR 30150
* dwarf2.c (comp_unit_contains_address): Renamed to ...
(comp_unit_may_contain_address): this, and added code to return
true if the CU's ranges have not yet been computed.
(_bfd_dwarf2_find_nearest_line_with_alt): Use the renamed
function, simplifying code in the process.
2023-02-21 Nick Clifton <nickc@redhat.com>
* opncls.c (bfd_fill_in_gnu_debuglink_section): Update

22
bfd/dwarf2.c
View File

@ -4643,21 +4643,20 @@ parse_comp_unit (struct dwarf2_debug *stash,
really contains the given address. */
static bool
comp_unit_contains_address (struct comp_unit *unit, bfd_vma addr)
comp_unit_may_contain_address (struct comp_unit *unit, bfd_vma addr)
{
struct arange *arange;
if (unit->error)
return false;
arange = &unit->arange;
do
{
if (unit->arange.high == 0 /* No ranges have been computed yet. */
|| unit->line_table == NULL) /* The line info table has not been loaded. */
return true;
for (arange = &unit->arange; arange != NULL; arange = arange->next)
if (addr >= arange->low && addr < arange->high)
return true;
arange = arange->next;
}
while (arange);
return false;
}
@ -5890,8 +5889,7 @@ _bfd_dwarf2_find_nearest_line_with_alt
/* Check the previously read comp. units first. */
for (each = stash->f.all_comp_units; each; each = each->next_unit)
if ((symbol->flags & BSF_FUNCTION) == 0
|| each->arange.high == 0
|| comp_unit_contains_address (each, addr))
|| comp_unit_may_contain_address (each, addr))
{
found = comp_unit_find_line (each, symbol, addr, filename_ptr,
linenumber_ptr);
@ -5973,13 +5971,11 @@ _bfd_dwarf2_find_nearest_line_with_alt
address. */
if (do_line)
found = (((symbol->flags & BSF_FUNCTION) == 0
|| each->arange.high == 0
|| comp_unit_contains_address (each, addr))
|| comp_unit_may_contain_address (each, addr))
&& comp_unit_find_line (each, symbol, addr,
filename_ptr, linenumber_ptr));
else
found = ((each->arange.high == 0
|| comp_unit_contains_address (each, addr))
found = (comp_unit_may_contain_address (each, addr)
&& comp_unit_find_nearest_line (each, addr,
filename_ptr,
&function,