https://sourceware.org/bugzilla/show_bug.cgi?id=19887
Bug ID: 19887
Summary: --export-dynamic-symbol ignored for plugin symbols
Product: binutils
Version: 2.27 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: gold
Assignee: ccoutant at gmail dot com
Reporter: eugeni.stepanov at gmail dot com
CC: ian at airs dot com
Target Milestone: ---
$ cat 1.c
void f() {}
int main() {}
$ clang -flto -O0 1.c -fuse-ld=gold -Wl,--export-dynamic-symbol=f
-Wl,-plugin-opt,generate-api-file
$ cat apifile.txt
f PREVAILING_DEF_IRONLY
main PREVAILING_DEF
Gold says that "f" is PREVAILING_DEF_IRONLY, i.e. has no external references. I
believe it should be PREVAILING_DEF_IRONLY_EXP due to
--export-dynamic-symbol=f.
The following patch implements the desired behaviour, though I'm not 100% sure
this is the best place for the fix.
--- a/gold/plugin.cc
+++ b/gold/plugin.cc
@@ -930,7 +930,10 @@ is_visible_from_outside(Symbol* lsym)
{
if (lsym->in_dyn())
return true;
- if (parameters->options().export_dynamic() ||
parameters->options().shared())
+ if (parameters->options().export_dynamic() ||
+ parameters->options().shared() ||
+ parameters->options().in_dynamic_list(lsym->name()) ||
+ parameters->options().is_export_dynamic_symbol(lsym->name()))
return lsym->is_externally_visible();
return false;
}
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