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authorJan Kratochvil <jan.kratochvil@redhat.com>2010-09-29 22:32:52 +0000
committerJan Kratochvil <jan.kratochvil@redhat.com>2010-09-29 22:32:52 +0000
commitbceffbf360f8a475b17761c996966bae1467b311 (patch)
tree72b94e27014548b53ccaec9b6666f4bf1b15582c
parentabc72ce4c676be2f368fa0ace766ed29cd444020 (diff)
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gdb/
Fix GDB crash on inferior calls with self-referencing classes. * gnu-v3-abi.c (gnuv3_pass_by_reference): Do not call itself on static member fields. gdb/testsuite/ Fix GDB crash on inferior calls with self-referencing classes. * gdb.dwarf2/dw2-cp-infcall-ref-static.exp: New file. * gdb.dwarf2/dw2-cp-infcall-ref-static-main.c: New file. * gdb.dwarf2/dw2-cp-infcall-ref-static.S: New file.
-rw-r--r--gdb/ChangeLog6
-rw-r--r--gdb/gnu-v3-abi.c5
-rw-r--r--gdb/testsuite/ChangeLog7
-rw-r--r--gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static-main.c51
-rw-r--r--gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static.S115
-rw-r--r--gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static.exp49
6 files changed, 231 insertions, 2 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index c9c4524..fc02717 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2010-09-29 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ Fix GDB crash on inferior calls with self-referencing classes.
+ * gnu-v3-abi.c (gnuv3_pass_by_reference): Do not call itself on static
+ member fields.
+
2010-09-29 Doug Evans <dje@google.com>
Workaround for gcc/45682.
diff --git a/gdb/gnu-v3-abi.c b/gdb/gnu-v3-abi.c
index f9d4f49..b1ddf02 100644
--- a/gdb/gnu-v3-abi.c
+++ b/gdb/gnu-v3-abi.c
@@ -835,9 +835,10 @@ gnuv3_pass_by_reference (struct type *type)
by reference, so does this class. Similarly for members, which
are constructed whenever this class is. We do not need to worry
about recursive loops here, since we are only looking at members
- of complete class type. */
+ of complete class type. Also ignore any static members. */
for (fieldnum = 0; fieldnum < TYPE_NFIELDS (type); fieldnum++)
- if (gnuv3_pass_by_reference (TYPE_FIELD_TYPE (type, fieldnum)))
+ if (! field_is_static (&TYPE_FIELD (type, fieldnum))
+ && gnuv3_pass_by_reference (TYPE_FIELD_TYPE (type, fieldnum)))
return 1;
return 0;
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 3ae8411..a8a27fb5 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2010-09-29 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ Fix GDB crash on inferior calls with self-referencing classes.
+ * gdb.dwarf2/dw2-cp-infcall-ref-static.exp: New file.
+ * gdb.dwarf2/dw2-cp-infcall-ref-static-main.c: New file.
+ * gdb.dwarf2/dw2-cp-infcall-ref-static.S: New file.
+
2010-09-24 Jan Kratochvil <jan.kratochvil@redhat.com>
Fix lost siginfo_t for inferior calls.
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static-main.c b/gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static-main.c
new file mode 100644
index 0000000..492beb9
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static-main.c
@@ -0,0 +1,51 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2010 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/>. */
+
+/* class C
+ {
+ public:
+ static C s;
+ };
+ C C::s;
+ C f()
+ {
+ return C::s;
+ } */
+
+asm (".globl cu_text_start");
+asm ("cu_text_start:");
+
+asm (".globl f_start");
+asm ("f_start:");
+
+void
+f (void)
+{
+}
+
+asm (".globl f_end");
+asm ("f_end:");
+
+int
+main (void)
+{
+ f ();
+ return 0;
+}
+
+asm (".globl cu_text_end");
+asm ("cu_text_end:");
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static.S b/gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static.S
new file mode 100644
index 0000000..cb73349
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static.S
@@ -0,0 +1,115 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+ Copyright 2010 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/>. */
+
+/* Debug information */
+
+ .section .debug_info
+.Lcu1_begin:
+ /* CU header */
+ .4byte .Lcu1_end - .Lcu1_start /* Length of Compilation Unit */
+.Lcu1_start:
+ .2byte 2 /* DWARF Version */
+ .4byte .Labbrev1_begin /* Offset into abbrev section */
+ .byte 4 /* Pointer size */
+
+ /* CU die */
+ .uleb128 1 /* Abbrev: DW_TAG_compile_unit */
+ .4byte cu_text_start /* DW_AT_low_pc */
+ .4byte cu_text_end /* DW_AT_high_pc */
+ .ascii "file1.txt\0" /* DW_AT_name */
+ .ascii "GNU C 3.3.3\0" /* DW_AT_producer */
+ .byte 4 /* DW_AT_language (DW_LANG_C_plus_plus) */
+
+.Ltype_class:
+ .uleb128 3 /* Abbrev: DW_TAG_class_type */
+ .ascii "C\0" /* DW_AT_name */
+
+ .uleb128 4 /* Abbrev: DW_TAG_member */
+ .ascii "s\0" /* DW_AT_name */
+ .4byte .Ltype_class-.Lcu1_begin /* DW_AT_type */
+ .byte 1 /* DW_AT_declaration */
+ .byte 1 /* DW_AT_external */
+
+ .byte 0 /* End of children of DW_TAG_class_type */
+
+ .uleb128 5 /* Abbrev: DW_TAG_subprogram */
+ .ascii "f\0" /* DW_AT_name */
+ .4byte .Ltype_class-.Lcu1_begin /* DW_AT_type */
+ .4byte f_start /* DW_AT_low_pc */
+ .4byte f_end /* DW_AT_high_pc */
+
+ .byte 0 /* End of children of CU */
+
+.Lcu1_end:
+
+/* Abbrev table */
+ .section .debug_abbrev
+.Labbrev1_begin:
+ .uleb128 1 /* Abbrev code */
+ .uleb128 0x11 /* DW_TAG_compile_unit */
+ .byte 1 /* has_children */
+ .uleb128 0x11 /* DW_AT_low_pc */
+ .uleb128 0x1 /* DW_FORM_addr */
+ .uleb128 0x12 /* DW_AT_high_pc */
+ .uleb128 0x1 /* DW_FORM_addr */
+ .uleb128 0x3 /* DW_AT_name */
+ .uleb128 0x8 /* DW_FORM_string */
+ .uleb128 0x25 /* DW_AT_producer */
+ .uleb128 0x8 /* DW_FORM_string */
+ .uleb128 0x13 /* DW_AT_language */
+ .uleb128 0xb /* DW_FORM_data1 */
+ .byte 0x0 /* Terminator */
+ .byte 0x0 /* Terminator */
+
+ .uleb128 3 /* Abbrev code */
+ .uleb128 0x2 /* DW_TAG_class_type */
+ .byte 1 /* has_children */
+ .uleb128 0x3 /* DW_AT_name */
+ .uleb128 0x8 /* DW_FORM_string */
+ .byte 0x0 /* Terminator */
+ .byte 0x0 /* Terminator */
+
+ .uleb128 4 /* Abbrev code */
+ .uleb128 0xd /* DW_TAG_member */
+ .byte 0 /* has_children */
+ .uleb128 0x3 /* DW_AT_name */
+ .uleb128 0x8 /* DW_FORM_string */
+ .uleb128 0x49 /* DW_AT_type */
+ .uleb128 0x13 /* DW_FORM_ref4 */
+ .uleb128 0x3c /* DW_AT_declaration */
+ .uleb128 0xc /* DW_FORM_flag */
+ .uleb128 0x3f /* DW_AT_external */
+ .uleb128 0xc /* DW_FORM_flag */
+ .byte 0x0 /* Terminator */
+ .byte 0x0 /* Terminator */
+
+ .uleb128 5 /* Abbrev code */
+ .uleb128 0x2e /* DW_TAG_subprogram */
+ .byte 0 /* has_children */
+ .uleb128 0x3 /* DW_AT_name */
+ .uleb128 0x8 /* DW_FORM_string */
+ .uleb128 0x49 /* DW_AT_type */
+ .uleb128 0x13 /* DW_FORM_ref4 */
+ .uleb128 0x11 /* DW_AT_low_pc */
+ .uleb128 0x1 /* DW_FORM_addr */
+ .uleb128 0x12 /* DW_AT_high_pc */
+ .uleb128 0x1 /* DW_FORM_addr */
+ .byte 0x0 /* Terminator */
+ .byte 0x0 /* Terminator */
+
+ .byte 0x0 /* Terminator */
+ .byte 0x0 /* Terminator */
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static.exp b/gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static.exp
new file mode 100644
index 0000000..08ef528
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-cp-infcall-ref-static.exp
@@ -0,0 +1,49 @@
+# Copyright 2010 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 GDB can call C++ functions whose parameters or return values have
+# type containing a static member of the same type.
+
+# Still no C++ compiler is used.
+if { [skip_cplus_tests] } { continue }
+
+# This test can only be run on targets which support DWARF-2 and use gas.
+# For now pick a sampling of likely targets.
+if {![istarget *-*-linux*]
+ && ![istarget *-*-gnu*]
+ && ![istarget *-*-elf*]
+ && ![istarget *-*-openbsd*]
+ && ![istarget arm-*-eabi*]
+ && ![istarget powerpc-*-eabi*]} {
+ return 0
+}
+
+set testfile "dw2-cp-infcall-ref-static"
+if { [prepare_for_testing ${testfile}.exp ${testfile} [list ${testfile}-main.c ${testfile}.S] {}] } {
+ return -1
+}
+
+if ![runto_main] then {
+ return -1
+}
+
+# main is not provided by DWARF.
+gdb_test_no_output "set language c++"
+
+# There are no mangled names in DWARF to suggest the v3 ABI.
+gdb_test_no_output "set cp-abi gnu-v3"
+
+# GDB could crash. There is no DW_AT_location so it is <optimized out>.
+gdb_test "p f()" { = {static s = <optimized out>}}