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| author | Stephen Crane <sjc@immunant.com> | 2017-12-01 12:10:02 -0800 |
|---|---|---|
| committer | Cary Coutant <ccoutant@gmail.com> | 2017-12-01 12:10:02 -0800 |
| commit | 71739b698d47945463f183619078ff680c277f0f (patch) | |
| tree | 52ab242525ddf5bbf79c77d120bab54b339d1318 /gold | |
| parent | e2e321740ce2e36a97be2a410cd56eebaa2304aa (diff) | |
| download | gdb-71739b698d47945463f183619078ff680c277f0f.zip gdb-71739b698d47945463f183619078ff680c277f0f.tar.gz gdb-71739b698d47945463f183619078ff680c277f0f.tar.bz2 | |
Fix problem where undef can fail to trigger archive rescan.
If a shared library contains an undefined symbol and LTO adds
a new reference to that same undefined symbol, the reference in the new
object added by the plugin would not trigger a rescan of the archive
containing the symbol.
2017-11-17 Stephen Crane <sjc@immunant.com>
gold/
PR gold/22448
* symtab.cc (Symbol_table::add_from_object): Only rescan for
undefined symbols in regular, not dynamic, objects.
Diffstat (limited to 'gold')
| -rw-r--r-- | gold/ChangeLog | 6 | ||||
| -rw-r--r-- | gold/symtab.cc | 15 |
2 files changed, 14 insertions, 7 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog index 43a3d70..e4b890e 100644 --- a/gold/ChangeLog +++ b/gold/ChangeLog @@ -1,3 +1,9 @@ +2017-11-17 Stephen Crane <sjc@immunant.com> + + PR gold/22448 + * symtab.cc (Symbol_table::add_from_object): Only rescan for + undefined symbols in regular, not dynamic, objects. + 2017-11-30 Peter Smith <peter.smith@linaro.org> PR gold/20765 diff --git a/gold/symtab.cc b/gold/symtab.cc index d1f71e0..e50b42c 100644 --- a/gold/symtab.cc +++ b/gold/symtab.cc @@ -990,7 +990,7 @@ Symbol_table::add_from_object(Object* object, // ins.second: true if new entry was inserted, false if not. Sized_symbol<size>* ret; - bool was_undefined; + bool was_undefined_in_reg; bool was_common; if (!ins.second) { @@ -998,7 +998,7 @@ Symbol_table::add_from_object(Object* object, ret = this->get_sized_symbol<size>(ins.first->second); gold_assert(ret != NULL); - was_undefined = ret->is_undefined(); + was_undefined_in_reg = ret->is_undefined() && ret->in_reg(); // Commons from plugins are just placeholders. was_common = ret->is_common() && ret->object()->pluginobj() == NULL; @@ -1049,7 +1049,7 @@ Symbol_table::add_from_object(Object* object, // it, then change it to NAME/VERSION. ret = this->get_sized_symbol<size>(insdefault.first->second); - was_undefined = ret->is_undefined(); + was_undefined_in_reg = ret->is_undefined() && ret->in_reg(); // Commons from plugins are just placeholders. was_common = ret->is_common() && ret->object()->pluginobj() == NULL; @@ -1061,7 +1061,7 @@ Symbol_table::add_from_object(Object* object, } else { - was_undefined = false; + was_undefined_in_reg = false; was_common = false; Sized_target<size, big_endian>* target = @@ -1105,9 +1105,10 @@ Symbol_table::add_from_object(Object* object, ret->set_is_default(); } - // Record every time we see a new undefined symbol, to speed up - // archive groups. - if (!was_undefined && ret->is_undefined()) + // Record every time we see a new undefined symbol, to speed up archive + // groups. We only care about symbols undefined in regular objects here + // because undefined symbols only in dynamic objects should't trigger rescans. + if (!was_undefined_in_reg && ret->is_undefined() && ret->in_reg()) { ++this->saw_undefined_; if (parameters->options().has_plugins()) |