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https://github.com/SebastianWendel/nixpkgs.git
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80 lines
3 KiB
Diff
80 lines
3 KiB
Diff
commit 8564af037f5c4c6d2744a89497691359205b2bbc
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Author: Shea Levy <shea@shealevy.com>
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Date: Mon Mar 19 10:52:40 2018 -0400
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Revert "Allow multiply-defined absolute symbols when they have the same value."
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This reverts commit 5dc824ed42cd173c1525f5abc76f4091f11a4dbc.
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diff --git a/gold/ChangeLog-2017 b/gold/ChangeLog-2017
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index b2a47710b5..d7ca1b48c0 100644
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--- a/gold/ChangeLog-2017
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+++ b/gold/ChangeLog-2017
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@@ -114,11 +114,6 @@
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(localedir): Define as @localedir@.
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(gnulocaledir, gettextsrcdir): Use @datarootdir@.
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-2017-11-28 Cary Coutant <ccoutant@gmail.com>
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-
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- * resolve.cc (Symbol_table::resolve): Allow multiply-defined absolute
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- symbols when they have the same value.
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-
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2017-11-28 Cary Coutant <ccoutant@gmail.com>
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* object.h (class Sized_relobj_file): Remove discarded_eh_frame_shndx_.
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diff --git a/gold/resolve.cc b/gold/resolve.cc
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index 4a5784cf8b..803576bfed 100644
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--- a/gold/resolve.cc
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+++ b/gold/resolve.cc
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@@ -247,28 +247,18 @@ Symbol_table::resolve(Sized_symbol<size>* to,
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Object* object, const char* version,
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bool is_default_version)
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{
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- bool to_is_ordinary;
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- const unsigned int to_shndx = to->shndx(&to_is_ordinary);
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-
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// It's possible for a symbol to be defined in an object file
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// using .symver to give it a version, and for there to also be
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// a linker script giving that symbol the same version. We
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// don't want to give a multiple-definition error for this
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// harmless redefinition.
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+ bool to_is_ordinary;
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if (to->source() == Symbol::FROM_OBJECT
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&& to->object() == object
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- && to->is_defined()
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&& is_ordinary
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+ && to->is_defined()
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+ && to->shndx(&to_is_ordinary) == st_shndx
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&& to_is_ordinary
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- && to_shndx == st_shndx
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- && to->value() == sym.get_st_value())
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- return;
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-
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- // Likewise for an absolute symbol defined twice with the same value.
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- if (!is_ordinary
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- && st_shndx == elfcpp::SHN_ABS
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- && !to_is_ordinary
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- && to_shndx == elfcpp::SHN_ABS
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&& to->value() == sym.get_st_value())
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return;
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@@ -360,8 +350,8 @@ Symbol_table::resolve(Sized_symbol<size>* to,
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&& (sym.get_st_bind() == elfcpp::STB_WEAK
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|| to->binding() == elfcpp::STB_WEAK)
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&& orig_st_shndx != elfcpp::SHN_UNDEF
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+ && to->shndx(&to_is_ordinary) != elfcpp::SHN_UNDEF
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&& to_is_ordinary
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- && to_shndx != elfcpp::SHN_UNDEF
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&& sym.get_st_size() != 0 // Ignore weird 0-sized symbols.
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&& to->symsize() != 0
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&& (sym.get_st_type() != to->type()
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@@ -372,7 +362,7 @@ Symbol_table::resolve(Sized_symbol<size>* to,
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{
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Symbol_location fromloc
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= { object, orig_st_shndx, static_cast<off_t>(sym.get_st_value()) };
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- Symbol_location toloc = { to->object(), to_shndx,
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+ Symbol_location toloc = { to->object(), to->shndx(&to_is_ordinary),
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static_cast<off_t>(to->value()) };
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this->candidate_odr_violations_[to->name()].insert(fromloc);
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this->candidate_odr_violations_[to->name()].insert(toloc);
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