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PR ld/14265
* script-sections.cc (Sections_element::output_section_name): Add keep return parameter. (Output_section_element::match_name): Add keep return parameter. Return the value of the keep_ member. * script-sections.h (class Output_section): Update output_section_name prototype. * layout.cc (Layout::keep_input_section): New public member function. (Layout::choose_output_section): Pass keep parameter to output_section_name. * layout.h (class Layout): Add keep_input_section. * object.cc (Sized_relobj_file::do_layout): Check for kept input sections. * testsuite/Makefile.am: Add a test. * testsuite/Makefile.in: Regenerate. * testsuite/pr14265.c: Source file for the test. * testsuite/pr14265.t: Linker script for the test. * testsuite/pr14265.sh: Shell script for the test. * ld-gc/gc.exp: Add a new test. * ld-gc/pr14265.c: Source file for the new test. * ld-gc/pr14265.t: Linker script for the new test. * ld-gc/pr14265.d: Expected symbol dump.
This commit is contained in:
Nick Clifton
parent
921b53228f
commit
b9b2ae8bbf
@ -1,3 +1,25 @@
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2012-08-14 Nick Clifton <nickc@redhat.com>
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PR ld/14265
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* script-sections.cc (Sections_element::output_section_name): Add
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keep return parameter.
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(Output_section_element::match_name): Add keep return parameter.
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Return the value of the keep_ member.
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* script-sections.h (class Output_section): Update
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output_section_name prototype.
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* layout.cc (Layout::keep_input_section): New public member
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function.
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(Layout::choose_output_section): Pass keep parameter to
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output_section_name.
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* layout.h (class Layout): Add keep_input_section.
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* object.cc (Sized_relobj_file::do_layout): Check for kept input
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sections.
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* testsuite/Makefile.am: Add a test.
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* testsuite/Makefile.in: Regenerate.
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* testsuite/pr14265.c: Source file for the test.
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* testsuite/pr14265.t: Linker script for the test.
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* testsuite/pr14265.sh: Shell script for the test.
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2012-08-14 Alan Modra <amodra@gmail.com>
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* target.h (Target::output_section_name): New function.
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@ -805,6 +805,26 @@ Layout::get_output_section(const char* name, Stringpool::Key name_key,
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}
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}
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// Returns TRUE iff NAME (an input section from RELOBJ) will
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// be mapped to an output section that should be KEPT.
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bool
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Layout::keep_input_section(const Relobj* relobj, const char* name)
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{
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if (! this->script_options_->saw_sections_clause())
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return false;
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Script_sections* ss = this->script_options_->script_sections();
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const char* file_name = relobj == NULL ? NULL : relobj->name().c_str();
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Output_section** output_section_slot;
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Script_sections::Section_type script_section_type;
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bool keep;
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name = ss->output_section_name(file_name, name, &output_section_slot,
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&script_section_type, &keep);
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return name != NULL && keep;
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}
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// Pick the output section to use for section NAME, in input file
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// RELOBJ, with type TYPE and flags FLAGS. RELOBJ may be NULL for a
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// linker created section. IS_INPUT_SECTION is true if we are
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@ -845,8 +865,10 @@ Layout::choose_output_section(const Relobj* relobj, const char* name,
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Output_section** output_section_slot;
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Script_sections::Section_type script_section_type;
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const char* orig_name = name;
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bool keep;
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name = ss->output_section_name(file_name, name, &output_section_slot,
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&script_section_type);
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&script_section_type, &keep);
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if (name == NULL)
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{
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gold_debug(DEBUG_SCRIPT, _("Unable to create output section '%s' "
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@ -920,6 +920,11 @@ class Layout
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section_list() const
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{ return this->section_list_; }
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// Returns TRUE iff NAME (an input section from RELOBJ) will
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// be mapped to an output section that should be KEPT.
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bool
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keep_input_section(const Relobj*, const char*);
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private:
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Layout(const Layout&);
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Layout& operator=(const Layout&);
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@ -1494,6 +1494,7 @@ Sized_relobj_file<size, big_endian>::do_layout(Symbol_table* symtab,
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if (is_gc_pass_one && parameters->options().gc_sections())
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{
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if (this->is_section_name_included(name)
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|| layout->keep_input_section (this, name)
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|| shdr.get_sh_type() == elfcpp::SHT_INIT_ARRAY
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|| shdr.get_sh_type() == elfcpp::SHT_FINI_ARRAY)
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{
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@ -582,7 +582,7 @@ class Sections_element
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// Output_section_definition.
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virtual const char*
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output_section_name(const char*, const char*, Output_section***,
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Script_sections::Section_type*)
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Script_sections::Section_type*, bool*)
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{ return NULL; }
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// Initialize OSP with an output section.
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@ -800,7 +800,7 @@ class Output_section_element
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// Return whether this element matches FILE_NAME and SECTION_NAME.
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// The only real implementation is in Output_section_element_input.
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virtual bool
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match_name(const char*, const char*) const
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match_name(const char*, const char*, bool *) const
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{ return false; }
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// Set section addresses. This includes applying assignments if the
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@ -1238,10 +1238,10 @@ class Output_section_element_input : public Output_section_element
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*dot_section = this->final_dot_section_;
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}
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// See whether we match FILE_NAME and SECTION_NAME as an input
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// section.
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// See whether we match FILE_NAME and SECTION_NAME as an input section.
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// If we do then also indicate whether the section should be KEPT.
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bool
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match_name(const char* file_name, const char* section_name) const;
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match_name(const char* file_name, const char* section_name, bool* keep) const;
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// Set the section address.
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void
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@ -1393,15 +1393,19 @@ Output_section_element_input::match_file_name(const char* file_name) const
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return true;
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}
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// See whether we match FILE_NAME and SECTION_NAME.
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// See whether we match FILE_NAME and SECTION_NAME. If we do then
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// KEEP indicates whether the section should survive garbage collection.
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bool
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Output_section_element_input::match_name(const char* file_name,
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const char* section_name) const
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const char* section_name,
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bool *keep) const
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{
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if (!this->match_file_name(file_name))
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return false;
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*keep = this->keep_;
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// If there are no section name patterns, then we match.
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if (this->input_section_patterns_.empty())
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return true;
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@ -1861,7 +1865,8 @@ class Output_section_definition : public Sections_element
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// section name.
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const char*
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output_section_name(const char* file_name, const char* section_name,
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Output_section***, Script_sections::Section_type*);
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Output_section***, Script_sections::Section_type*,
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bool*);
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// Initialize OSP with an output section.
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void
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@ -2146,14 +2151,15 @@ Output_section_definition::output_section_name(
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const char* file_name,
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const char* section_name,
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Output_section*** slot,
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Script_sections::Section_type* psection_type)
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Script_sections::Section_type* psection_type,
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bool* keep)
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{
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// Ask each element whether it matches NAME.
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for (Output_section_elements::const_iterator p = this->elements_.begin();
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p != this->elements_.end();
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++p)
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{
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if ((*p)->match_name(file_name, section_name))
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if ((*p)->match_name(file_name, section_name, keep))
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{
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// We found a match for NAME, which means that it should go
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// into this output section.
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@ -3365,7 +3371,8 @@ Script_sections::output_section_name(
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const char* file_name,
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const char* section_name,
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Output_section*** output_section_slot,
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Script_sections::Section_type* psection_type)
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Script_sections::Section_type* psection_type,
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bool* keep)
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{
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for (Sections_elements::const_iterator p = this->sections_elements_->begin();
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p != this->sections_elements_->end();
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@ -3373,7 +3380,7 @@ Script_sections::output_section_name(
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{
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const char* ret = (*p)->output_section_name(file_name, section_name,
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output_section_slot,
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psection_type);
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psection_type, keep);
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if (ret != NULL)
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{
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@ -163,10 +163,12 @@ class Script_sections
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// PSCRIPT_SECTION_TYPE points to a location for returning the section
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// type specified in script. This can be SCRIPT_SECTION_TYPE_NONE if
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// no type is specified.
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// *KEEP indicates whether the section should survive garbage collection.
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const char*
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output_section_name(const char* file_name, const char* section_name,
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Output_section*** output_section_slot,
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Section_type* pscript_section_type);
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Section_type* pscript_section_type,
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bool* keep);
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// Place a marker for an orphan output section into the SECTIONS
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// clause.
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@ -164,6 +164,16 @@ gc_orphan_section_test:gc_orphan_section_test.o gcctestdir/ld
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gc_orphan_section_test.stdout: gc_orphan_section_test
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$(TEST_NM) gc_orphan_section_test > gc_orphan_section_test.stdout
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check_SCRIPTS += pr14265.sh
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check_DATA += pr14265.stdout
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MOSTLYCLEANFILES += pr14265
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pr14265.o: pr14265.c
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$(COMPILE) -O0 -c -o $@ $<
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pr14265: pr14265.o
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$(LINK) -Bgcctestdir/ -Wl,--gc-sections -T $(srcdir)/pr14265.t -o $@ $<
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pr14265.stdout: pr14265
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$(TEST_NM) --format=bsd --numeric-sort $< > $@
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check_SCRIPTS += icf_test.sh
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check_DATA += icf_test.stdout
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MOSTLYCLEANFILES += icf_test
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@ -76,7 +76,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_2 = incremental_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ gc_comdat_test.sh gc_tls_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ gc_orphan_section_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ pr14265.sh icf_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_keep_unique_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_safe_test.sh \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_safe_so_test.sh \
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@ -104,7 +104,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ gc_comdat_test.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ gc_tls_test.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ gc_orphan_section_test.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_test.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ pr14265.stdout icf_test.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_keep_unique_test.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_safe_test_1.stdout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_safe_test_2.stdout \
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@ -118,8 +118,8 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ weak_plt_shared.so debug_msg.err
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@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_4 = incremental_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ gc_comdat_test gc_tls_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ gc_orphan_section_test icf_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_keep_unique_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ gc_orphan_section_test pr14265 \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_test icf_keep_unique_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_safe_test icf_safe_so_test \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ final_layout \
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ icf_virtual_function_folding_test \
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@ -3661,6 +3661,8 @@ gc_tls_test.sh.log: gc_tls_test.sh
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@p='gc_tls_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
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gc_orphan_section_test.sh.log: gc_orphan_section_test.sh
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@p='gc_orphan_section_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
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pr14265.sh.log: pr14265.sh
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@p='pr14265.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
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icf_test.sh.log: icf_test.sh
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@p='icf_test.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
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icf_keep_unique_test.sh.log: icf_keep_unique_test.sh
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@ -4272,6 +4274,12 @@ uninstall-am:
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ -Wl,--gc-sections gc_orphan_section_test.o
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@GCC_TRUE@@NATIVE_LINKER_TRUE@gc_orphan_section_test.stdout: gc_orphan_section_test
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_NM) gc_orphan_section_test > gc_orphan_section_test.stdout
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@GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265.o: pr14265.c
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(COMPILE) -O0 -c -o $@ $<
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@GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265: pr14265.o
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(LINK) -Bgcctestdir/ -Wl,--gc-sections -T $(srcdir)/pr14265.t -o $@ $<
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@GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265.stdout: pr14265
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_NM) --format=bsd --numeric-sort $< > $@
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@GCC_TRUE@@NATIVE_LINKER_TRUE@icf_test.o: icf_test.cc
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@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
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@GCC_TRUE@@NATIVE_LINKER_TRUE@icf_test: icf_test.o gcctestdir/ld
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20
gold/testsuite/pr14265.c
Normal file
20
gold/testsuite/pr14265.c
Normal file
@ -0,0 +1,20 @@
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int foo0 __attribute__((used,section(".foo0.0")));
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int foo1 __attribute__((used,section(".foo1.0")));
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int foo2 __attribute__((used,section(".foo2.0")));
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extern unsigned long __foo0_start;
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extern unsigned long __foo0_end;
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extern unsigned long __foo1_start;
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extern unsigned long __foo1_end;
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extern unsigned long __foo2_start;
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extern unsigned long __foo2_end;
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int
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main (void)
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{
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return ((__foo0_end - __foo0_start) -
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(__foo1_end - __foo1_start) -
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(__foo2_end - __foo2_start));
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}
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40
gold/testsuite/pr14265.sh
Executable file
40
gold/testsuite/pr14265.sh
Executable file
@ -0,0 +1,40 @@
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#!/bin/sh
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# pr14265.sh -- test --gc-sections with KEEP
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# Copyright 2012 Free Software Foundation, Inc.
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# Written by Nick Clifton <nickc@redhat.com>
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# This file is part of gold.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
|
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# You should have received a copy of the GNU General Public License
|
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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# MA 02110-1301, USA.
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check()
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{
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if ! grep -q "$2" "$1"
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then
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echo "Garbage collection failed to KEEP :"
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echo " $2"
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exit 1
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fi
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}
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check pr14265.stdout "foo1_start"
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check pr14265.stdout "foo1_end"
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check pr14265.stdout "foo2_start"
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check pr14265.stdout "foo2_end"
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23
gold/testsuite/pr14265.t
Normal file
23
gold/testsuite/pr14265.t
Normal file
@ -0,0 +1,23 @@
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SECTIONS
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{
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.text : { *(.text) }
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__foo0_start = .;
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.foo0 : { *(.foo0.*) }
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__foo0_end = .;
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__foo1_start = .;
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.foo1 : { KEEP(*(.foo1.*)) }
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__foo1_end = .;
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.foo2 : {
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__foo2_start = .;
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KEEP(*(.foo2.*))
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__foo2_end = .;
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}
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}
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ASSERT (__foo1_start < __foo1_end, "foo1 not KEPT");
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ASSERT ((__foo1_end - __foo1_start) == (__foo2_end - __foo2_start),"foo2 not KEPT");
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@ -1,3 +1,11 @@
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2012-08-14 Nick Clifton <nickc@redhat.com>
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PR ld/14265
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* ld-gc/gc.exp: Add a new test.
|
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* ld-gc/pr14265.c: Source file for the new test.
|
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* ld-gc/pr14265.t: Linker script for the new test.
|
||||
* ld-gc/pr14265.d: Expected symbol dump.
|
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|
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2012-08-13 Maciej W. Rozycki <macro@codesourcery.com>
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* ld-mips-elf/export-class-call16-o32.dd: New test.
|
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@ -131,3 +131,8 @@ if { [is_remote host] || [which $CC] != 0 } {
|
||||
ld_compile "$CC $CFLAGS $cflags" $srcdir/$subdir/pr13683.c tmpdir/pr13683.o
|
||||
run_dump_test "pr13683"
|
||||
}
|
||||
|
||||
if { [is_remote host] || [which $CC] != 0 } {
|
||||
ld_compile "$CC $CFLAGS $cflags" $srcdir/$subdir/pr14265.c tmpdir/pr14265.o
|
||||
run_dump_test "pr14265"
|
||||
}
|
||||
|
||||
20
ld/testsuite/ld-gc/pr14265.c
Normal file
20
ld/testsuite/ld-gc/pr14265.c
Normal file
@ -0,0 +1,20 @@
|
||||
int foo0 __attribute__((used,section(".foo0.0")));
|
||||
int foo1 __attribute__((used,section(".foo1.0")));
|
||||
int foo2 __attribute__((used,section(".foo2.0")));
|
||||
|
||||
extern unsigned long __foo0_start;
|
||||
extern unsigned long __foo0_end;
|
||||
|
||||
extern unsigned long __foo1_start;
|
||||
extern unsigned long __foo1_end;
|
||||
|
||||
extern unsigned long __foo2_start;
|
||||
extern unsigned long __foo2_end;
|
||||
|
||||
int
|
||||
main (void)
|
||||
{
|
||||
return ((__foo0_end - __foo0_start) -
|
||||
(__foo1_end - __foo1_start) -
|
||||
(__foo2_end - __foo2_start));
|
||||
}
|
||||
13
ld/testsuite/ld-gc/pr14265.d
Normal file
13
ld/testsuite/ld-gc/pr14265.d
Normal file
@ -0,0 +1,13 @@
|
||||
#name: --gc-sections with KEEP
|
||||
#source: dummy.s
|
||||
#ld: --gc-sections -T pr14265.t -e 0 tmpdir/pr14265.o
|
||||
#nm: --format=bsd --numeric-sort
|
||||
|
||||
#...
|
||||
[0-9a-f]+[ ]d[ ]_*foo1_start
|
||||
[0-9a-f]+[ ]D[ ]_*foo1
|
||||
[0-9a-f]+[ ]d[ ]_*foo1_end
|
||||
[0-9a-f]+[ ]d[ ]_*foo2_start
|
||||
[0-9a-f]+[ ]D[ ]_*foo2
|
||||
[0-9a-f]+[ ]d[ ]_*foo2_end
|
||||
#...
|
||||
22
ld/testsuite/ld-gc/pr14265.t
Normal file
22
ld/testsuite/ld-gc/pr14265.t
Normal file
@ -0,0 +1,22 @@
|
||||
SECTIONS
|
||||
{
|
||||
.text : { *(.text) }
|
||||
|
||||
__foo0_start = .;
|
||||
.foo0 : { *(.foo0.*) }
|
||||
__foo0_end = .;
|
||||
|
||||
__foo1_start = .;
|
||||
.foo1 : { KEEP(*(.foo1.*)) }
|
||||
__foo1_end = .;
|
||||
|
||||
.foo2 : {
|
||||
__foo2_start = .;
|
||||
KEEP(*(.foo2.*))
|
||||
__foo2_end = .;
|
||||
}
|
||||
/DISCARD/ : { *(*) }
|
||||
}
|
||||
|
||||
ASSERT (__foo1_start < __foo1_end, "foo1 not KEPT");
|
||||
ASSERT ((__foo1_end - __foo1_start) == (__foo2_end - __foo2_start),"foo2 not KEPT");
|
||||
Loading…
Reference in New Issue
Block a user