[Bug default/24407] New: comment in partition_dups_1 does not match code
vries at gcc dot gnu.org
sourceware-bugzilla@sourceware.org
Tue Jan 1 00:00:00 GMT 2019
https://sourceware.org/bugzilla/show_bug.cgi?id=24407
Bug ID: 24407
Summary: comment in partition_dups_1 does not match code
Product: dwz
Version: unspecified
Status: NEW
Severity: minor
Priority: P2
Component: default
Assignee: nobody at sourceware dot org
Reporter: vries at gcc dot gnu.org
CC: dwz at sourceware dot org
Target Milestone: ---
In partition_dups_1 there's some code:
...
if (second_phase)
{
dw_die_ref next;
for (k = i; k < j; k++)
{
if (arr[k]->die_dup != NULL)
continue;
for (ref = arr[k]; ref; ref = next)
{
dw_cu_ref refcu = die_cu (ref);
next = ref->die_nextdup;
ref->die_dup = NULL;
ref->die_nextdup = NULL;
ref->die_remove = 0;
/* If there are dups within a single CU
(arguably a bug in the DWARF producer),
keep them linked together, but don't link
DIEs across different CUs. */
while (next && refcu == die_cu (next))
{
dw_die_ref cur = next;
next = cur->die_nextdup;
cur->die_dup = ref;
cur->die_nextdup = ref->die_nextdup;
ref->die_nextdup = cur;
}
}
}
}
...
If we have DIEs linked across 2 different CUs, indeed this code breaks the
link.
But if we have DIES linked across 3 different CUs, then this code breaks the
link between the first and the second, but not between the second and the
third.
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