binutils-gdb/gdb/testsuite/gdb.dwarf2/dw2-zero-range.exp

# Copyright 2021 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# Check that the ".debug_ranges entry has start address of zero" complaint
# is triggered for a loaded shared lib.

load_lib dwarf.exp

# This test can only be run on targets which support DWARF-2 and use gas.
if {![dwarf2_support]} {
    verbose "Skipping $gdb_test_file_name."
    return 0
}

if {[skip_shlib_tests]} {
    return 0
}

standard_testfile .c -shlib.c -dw.S

# Test with both a .debug_ranges section (DWARF 4) and a .debug_rnglists
# section (DWARF 5).

foreach_with_prefix ranges_sect {ranges rnglists} {
    set asm_file [standard_output_file ${ranges_sect}-$srcfile3]

    if { $ranges_sect == "ranges" } {
	Dwarf::assemble $asm_file {
	    global srcdir subdir srcfile2
	    declare_labels ranges_label

	    cu {} {
		compile_unit {
		    {language @DW_LANG_C}
		    {name $srcfile2}
		    {ranges ${ranges_label} DW_FORM_sec_offset}
		} {
		    subprogram {
			{external 1 flag}
			{name foo}
		    }
		}
	    }

	    ranges {is_64 [is_64_target]} {
		ranges_label: sequence {
		    base 0
		    range 0 1
		}
	    }
	}
    } elseif { $ranges_sect == "rnglists" } {
	Dwarf::assemble $asm_file {
	    global srcdir subdir srcfile2
	    declare_labels rnglists_label

	    cu {
		version 5
	    } {
		compile_unit {
		    {language @DW_LANG_C}
		    {name $srcfile2}
		    {ranges ${rnglists_label} DW_FORM_sec_offset}
		} {
		    subprogram {
			{external 1 flag}
			{name foo}
		    }
		}
	    }

	    rnglists {
		table {
		    rnglists_label: list_ {
			start_end 0 1
		    }
		}
	    }
	}
    } else {
	error "invalid ranges section kind"
    }

    set lib1 [standard_output_file shr1.sl]
    set lib_opts "nodebug"

    set sources [list ${srcdir}/${subdir}/$srcfile2 $asm_file]
    if { [gdb_compile_shlib $sources ${lib1} $lib_opts] != "" } {
	untested "failed to compile"
	return -1
    }

    set exec_opts [list debug shlib=${lib1}]
    set sources ${srcdir}/${subdir}/${srcfile}
    if { [gdb_compile $sources  ${binfile} executable \
	      $exec_opts] != ""} {
	untested "failed to compile"
	return -1
    }

    clean_restart $binfile

    set readnow_p [readnow]

    # Don't load the symbols for $lib1 during runto_main.
    # Instead, we do this afterwards using "sharedlibrary $lib1".
    gdb_test_no_output "set auto-solib-add off"

    if { ![runto_main] } {
	fail "cannot run to main."
	return -1
    }

    set complaint_re ".debug_${ranges_sect} entry has start address of zero"
    set re \
	"During symbol reading: $complaint_re \\\[in module \[^\r\n\]*\\\]"

    # Test for presence of complaint, with lib1 relocated.
    with_complaints 1 {
	set test "Zero address complaint - relocated - psymtab"
	set have_complaint 0
	gdb_test_multiple "sharedlibrary $lib1" $test {
	    -re -wrap $re {
		set have_complaint 1
	    }
	    -re -wrap "" {
	    }
	}

	gdb_assert { $have_complaint } $test
    }

    if { ! $readnow_p } {
	with_complaints 1 {
	    gdb_test "maint expand-symtabs $srcfile2" $re \
		"Zero address complaint - relocated - symtab"
	}
    }

    clean_restart
    # Test for presence of complaint, with lib1 unrelocated.
    with_complaints 1 {
	gdb_load $lib1
	set test "Zero address complaint - unrelocated - psymtab"
	set have_complaint [regexp $re.* $gdb_file_cmd_msg]
	gdb_assert { $have_complaint } $test
    }

    if { ! $readnow_p } {
	with_complaints 1 {
	    gdb_test "maint expand-symtabs $srcfile2" $re \
		"Zero address complaint - unrelocated - symtab"
	}
    }
}