918dd91059
Fix crash if referenced CU is aged out. * dwarf2loc.c (per_cu_dwarf_call): New variable back_to, use to for xfree of block.data. (indirect_pieced_value): New variable back_to, use to for xfree of baton.data. (dwarf2_compile_expr_to_ax): New variable back_to, use to for xfree of block.data. * dwarf2read.c (dwarf2_find_base_address): New prototype. (load_cu): New function from ... (dw2_do_instantiate_symtab): ... the code here ... (process_full_comp_unit): ... and here. (dwarf2_fetch_die_location_block): Call load_cu first. Call xmemdup on retval.data. gdb/testsuite/ Fix crash if referenced CU is aged out. * gdb.dwarf2/dw2-op-call.exp (maintenance set dwarf2 max-cache-age 0): New. * gdb.dwarf2/implptr.exp: Likewise.
84 lines
2.9 KiB
Text
84 lines
2.9 KiB
Text
# Copyright 2010, 2011 Free Software Foundation, Inc.
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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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#
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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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#
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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, see <http://www.gnu.org/licenses/>.
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load_lib dwarf.exp
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# Test DW_OP_GNU_implicit_pointer.
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# This test can only be run on targets which support DWARF-2 and use gas.
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if {![dwarf2_support]} {
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return 0
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}
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set testfile "implptr"
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set srcfile ${testfile}.S
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set csrcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}.x
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set opts {}
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if [info exists COMPILE] {
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# make check RUNTESTFLAGS='gdb.dwarf2/implptr.exp COMPILE=1 CC_FOR_TARGET=gcc\ -m32'
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set srcfile ${csrcfile}
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lappend opts debug optimize=-O2
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} elseif {![is_x86_like_target]} {
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# This test can only be run on x86 targets.
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return 0
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}
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if {[prepare_for_testing ${testfile}.exp ${testfile}.x $srcfile $opts]} {
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return -1
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}
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# Additional test to verify the referenced CU is not aged out.
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gdb_test_no_output "maintenance set dwarf2 max-cache-age 0"
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if ![runto_main] {
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return -1
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}
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# Test various pointer depths in bar.
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proc implptr_test_bar {} {
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global csrcfile
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set line [gdb_get_line_number "bar breakpoint" $csrcfile]
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gdb_test "break implptr.c:$line" "Breakpoint 2.*" \
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"set bar breakpoint for implptr"
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gdb_continue_to_breakpoint "continue to bar breakpoint for implptr"
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gdb_test "print j" " = \\(intp\\) <synthetic pointer>" "print j in implptr:bar"
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gdb_test "print *j" " = 5" "print *j in implptr:bar"
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gdb_test "print **k" " = 5" "print **k in implptr:bar"
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gdb_test "print ***l" " = 5" "print ***l in implptr:bar"
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}
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# Test some values in foo.
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proc implptr_test_foo {} {
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global csrcfile
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set line [gdb_get_line_number "foo breakpoint" $csrcfile]
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gdb_test "break implptr.c:$line" "Breakpoint 3.*" \
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"set foo breakpoint for implptr"
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gdb_continue_to_breakpoint "continue to foo breakpoint for implptr"
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gdb_test "print p\[0].x" " = \\(int \\*\\) <synthetic pointer>" \
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"print p\[0].x in implptr:foo"
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gdb_test "print *p\[0].x" " = 69" \
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"print *p\[0].x in implptr:foo"
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gdb_test "print/d *(((char *) p\[0].x) + 1)" " = 0" \
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"print byte inside *p\[0].x in implptr:foo"
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gdb_test "print *(p\[0].x + 10)" \
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"access outside bounds of object referenced via synthetic pointer" \
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"print invalid offset from *p\[0].x in implptr:foo"
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gdb_test "print j" " = 69" \
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"print j in implptr:foo"
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}
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implptr_test_bar
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implptr_test_foo
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