gdb/testsuite/gdb.dwarf2/inlined_subroutine-inheritance.exp

# Copyright 2018-2021 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/>.

# This tests a segfault that occurs when reading inlined_subroutine DIEs
# with abstract_origins pointing to DIEs in other CUs.
#
# See https://bugzilla.redhat.com/show_bug.cgi?id=1638798 .

load_lib dwarf.exp

# This test can only be run on targets which support DWARF.
if {![dwarf2_support]} {
    return 0
}

standard_testfile main.c .S

# Create the DWARF.  This is derived from the reproducer in the Fedora
# bugzila mentioned above.  For clarity, some "superfluous" DIES have
# been left instead of simplifying/pruning the test further.
set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
    declare_labels Db D72f8 D736e
    declare_labels D266465 D266477 D266483 D266496 D266498 D266ad3 D266ad9 \
	D266ade D26b227 D26b237
    declare_labels D26d8b1 D26d8c3 D26d8cf D26d944 D26d946 D26e103 D26e145 \
	D26e415 D26e48c D26df00 D26df06 D26df0b D272519 D274c1a D274c42

    cu {} {
	Db: compile_unit {
	    {language @DW_LANG_C99}
	    {name "<artificial>"}
	} {
	    D72f8: subprogram {
		{abstract_origin %$D272519}
		{low_pc 0xb9e20 addr}
		{high_pc 0x1f5 data4}
	    } {
		D736e: inlined_subroutine {
		    {abstract_origin %$D26b227}
		    {low_pc 0xb9efc addr}
		    {high_pc 0xc data4}
		} {
		    formal_parameter {
			{abstract_origin %$D274c42}
		    }
		}
	    }
	}
    }

    cu {} {
	D266465: compile_unit {
	    {language @DW_LANG_C99}
	} {
	    D266477: typedef {
		{name "size_t"}
		{type :$D266483}
	    }

	    D266483: base_type {
		{byte_size 8 sdata}
		{encoding @DW_ATE_unsigned}
	    }

	    D266496: pointer_type {
		{byte_size 8 sdata}
	    }

	    D266498: restrict_type {
		{type :$D266496}
	    }

	    D266ad3: pointer_type {
		{byte_size 8 sdata}
		{type :$D266ade}
	    }

	    D266ad9: restrict_type {
		{type :$D266ad3}
	    }

	    D266ade: const_type {}

	    D26b227: subprogram {
		{external 1 flag}
		{name "memcpy"}
		{type :$D266496}
	    } {
		D26b237: formal_parameter {
		    {name "__dest"}
		    {type :$D266498}
		}
		formal_parameter {
		    {name "__src"}
		    {type :$D266ad9}
		}
		formal_parameter {
		    {name "__len"}
		    {type :$D266477}
		}
	    }
	}
    }

    cu {} {
	D26d8b1: compile_unit {
	    {language @DW_LANG_C99}
	} {
	    D26d8c3: typedef {
		{name "size_t"}
		{type :$D26d8cf}
	    }

	    D26d8cf: base_type {
		{byte_size 8 sdata}
		{encoding @DW_ATE_unsigned}
		{name "long unsigned int"}
	    }

	    D26d944: pointer_type {
		{byte_size 8 sdata}
	    }

	    D26d946: restrict_type {
		{type :$D26d944}
	    }

	    D26e103: structure_type {
		{name "__object"}
		{byte_size 12 sdata}
	    } {
		member {
		    {name "__ob_next"}
		    {type :$D26e145}
		    {data_member_location 0 sdata}
		}
	    }

	    D26e145: pointer_type {
		{byte_size 8 sdata}
		{type :$D26e103}
	    }

	    D26e415: typedef {
		{name "PyObject"}
		{type :$D26e103}
	    }

	    D26e48c: pointer_type {
		{byte_size 8 sdata}
		{type :$D26e415}
	    }

	    D26df00: pointer_type {
		{byte_size 8 sdata}
		{type :$D26df0b}
	    }

	    D26df06: restrict_type {
		{type :$D26df00}
	    }

	    D26df0b: const_type {}

	    D272519: subprogram {
		{name "bytes_repeat"}
		{type :$D26e48c}
	    }

	    D274c1a: subprogram {
		{external 1 flag}
		{name "memcpy"}
		{type :$D26d944}
	    } {
		formal_parameter {
		    {name "__dest"}
		    {type :$D26d946}
		}
		formal_parameter {
		    {name "__src"}
		    {type :$D26df06}
		}
		D274c42: formal_parameter {
		    {name "__len"}
		    {type :$D26d8c3}
		}
	    }
	}
    }
}

if {[prepare_for_testing "failed to prepare" $testfile \
	 "${asm_file} ${srcfile}" {}]} {
    return -1
}

# All we need to do is set a breakpoint, which causes the DWARF
# info to be read, to demonstrate the problem.

gdb_breakpoint "bytes_repeat" message