From da422fa49d508e33b8f1b2bd9b8f719b831b199b Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Mon, 25 Apr 2022 10:51:39 -0700 Subject: LTO: Handle __real_SYM reference in IR When an IR symbol SYM is referenced in IR via __real_SYM, its resolution should be LDPR_PREVAILING_DEF, not PREVAILING_DEF_IRONLY, since LTO doesn't know that __real_SYM should be resolved by SYM. bfd/ PR ld/29086 * linker.c (bfd_wrapped_link_hash_lookup): Mark SYM is referenced via __real_SYM. include/ PR ld/29086 * bfdlink.h (bfd_link_hash_entry): Add ref_real. ld/ PR ld/29086 * plugin.c (get_symbols): Resolve SYM definition to LDPR_PREVAILING_DEF for __real_SYM reference. * testsuite/ld-plugin/lto.exp: Run PR ld/29086 test. * testsuite/ld-plugin/pr29086.c: New file. --- ld/plugin.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'ld/plugin.c') diff --git a/ld/plugin.c b/ld/plugin.c index 6db52d1..fe20310 100644 --- a/ld/plugin.c +++ b/ld/plugin.c @@ -863,8 +863,11 @@ get_symbols (const void *handle, int nsyms, struct ld_plugin_symbol *syms, /* We need to know if the sym is referenced from non-IR files. Or even potentially-referenced, perhaps in a future final link if this is a partial one, perhaps dynamically at load-time if the - symbol is externally visible. Also check for wrapper symbol. */ - if (blhe->non_ir_ref_regular || wrap_status == wrapper) + symbol is externally visible. Also check for __real_SYM + reference and wrapper symbol. */ + if (blhe->non_ir_ref_regular + || blhe->ref_real + || wrap_status == wrapper) res = LDPR_PREVAILING_DEF; else if (wrap_status == wrapped) res = LDPR_RESOLVED_IR; -- cgit v1.1