+2011-03-15 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ * dwarf2read.c (dwarf2_get_pc_bounds): Require HIGH strictly higher
+ than LOW. Comment it.
+ (read_partial_die): Call complaint for inappropriate zero LOWPC or
+ HIGHPC not strictly higher than LOWPC.
+
2011-03-15 Pierre Muller <muller@ics.u-strasbg.fr>
Fix formatting of function declarations returning a pointer in
}
}
- if (high < low)
+ /* read_partial_die has also the strict LOW < HIGH requirement. */
+ if (high <= low)
return 0;
/* When using the GNU linker, .gnu.linkonce. sections are used to
}
}
- /* When using the GNU linker, .gnu.linkonce. sections are used to
- eliminate duplicate copies of functions and vtables and such.
- The linker will arbitrarily choose one and discard the others.
- The AT_*_pc values for such functions refer to local labels in
- these sections. If the section from that file was discarded, the
- labels are not in the output, so the relocs get a value of 0.
- If this is a discarded function, mark the pc bounds as invalid,
- so that GDB will ignore it. */
- if (has_low_pc_attr && has_high_pc_attr
- && part_die->lowpc < part_die->highpc
- && (part_die->lowpc != 0
- || dwarf2_per_objfile->has_section_at_zero))
- part_die->has_pc_info = 1;
+ if (has_low_pc_attr && has_high_pc_attr)
+ {
+ /* When using the GNU linker, .gnu.linkonce. sections are used to
+ eliminate duplicate copies of functions and vtables and such.
+ The linker will arbitrarily choose one and discard the others.
+ The AT_*_pc values for such functions refer to local labels in
+ these sections. If the section from that file was discarded, the
+ labels are not in the output, so the relocs get a value of 0.
+ If this is a discarded function, mark the pc bounds as invalid,
+ so that GDB will ignore it. */
+ if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero)
+ {
+ struct gdbarch *gdbarch = get_objfile_arch (cu->objfile);
+
+ complaint (&symfile_complaints,
+ _("DW_AT_low_pc %s is zero "
+ "for DIE at 0x%x [in module %s]"),
+ paddress (gdbarch, part_die->lowpc),
+ part_die->offset, cu->objfile->name);
+ }
+ /* dwarf2_get_pc_bounds has also the strict low < high requirement. */
+ else if (part_die->lowpc >= part_die->highpc)
+ {
+ struct gdbarch *gdbarch = get_objfile_arch (cu->objfile);
+
+ complaint (&symfile_complaints,
+ _("DW_AT_low_pc %s is not < DW_AT_high_pc %s "
+ "for DIE at 0x%x [in module %s]"),
+ paddress (gdbarch, part_die->lowpc),
+ paddress (gdbarch, part_die->highpc),
+ part_die->offset, cu->objfile->name);
+ }
+ else
+ part_die->has_pc_info = 1;
+ }
return info_ptr;
}
+2011-03-15 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ * gdb.dwarf2/dw2-empty-pc-range.S: New file.
+ * gdb.dwarf2/dw2-empty-pc-range.exp: New file.
+ * gdb.dwarf2/pr11465.S: New .text labels text_start and text_end.
+ Provide a stub byte there.
+ (DW_TAG_compile_unit): Set DW_AT_low_pc, DW_AT_high_pc and
+ DW_AT_entry_pc.
+ (dieb4, dieda): Set DW_AT_high_pc higher than DW_AT_low_pc.
+
2011-03-15 Ulrich Weigand <uweigand@de.ibm.com>
* gdb.arch/altivec-abi.exp: Skip "generic" tests on 64-bit when
--- /dev/null
+/* Copyright 2011, 2011 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/>. */
+
+ .text
+pc_start:
+ .byte 0
+pc_end:
+
+ .section .debug_info
+d:
+ .long .Ldebug_info_end - 1f /* Length of Compilation Unit Info */
+1:
+ .2byte 0x3 /* DWARF version number */
+ .long .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
+ .byte 0x4 /* Pointer Size (in bytes) */
+dieb:
+ .uleb128 0x1 /* (DIE (0xb) DW_TAG_compile_unit) */
+ .ascii "GCC\0" /* DW_AT_producer */
+ .byte 0x2 /* DW_AT_language = DW_LANG_C */
+ .ascii "1.c\0" /* DW_AT_name */
+
+ .uleb128 0x2 /* (DIE (0xd3) DW_TAG_subprogram) */
+ .byte 0x1 /* DW_AT_external */
+ .ascii "realrange\0" /* DW_AT_name */
+ .4byte pc_start /* DW_AT_low_pc */
+ .4byte pc_end /* DW_AT_high_pc */
+ .byte 0x1 /* DW_AT_prototyped */
+
+ .uleb128 0x2 /* (DIE (0xd3) DW_TAG_subprogram) */
+ .byte 0x1 /* DW_AT_external */
+ .ascii "emptyrange\0" /* DW_AT_name */
+ .4byte pc_start /* DW_AT_low_pc */
+ .4byte pc_start /* DW_AT_high_pc */
+ .byte 0x1 /* DW_AT_prototyped */
+
+ .byte 0x0 /* end of children of DIE 0xb */
+.Ldebug_info_end:
+
+ .section .debug_abbrev
+.Ldebug_abbrev0:
+
+ .uleb128 0x1 /* (abbrev code) */
+ .uleb128 0x11 /* (TAG: DW_TAG_compile_unit) */
+ .byte 0x1 /* DW_children_yes */
+ .uleb128 0x25 /* (DW_AT_producer) */
+ .uleb128 0x8 /* (DW_FORM_string) */
+ .uleb128 0x13 /* (DW_AT_language) */
+ .uleb128 0xb /* (DW_FORM_data1) */
+ .uleb128 0x3 /* (DW_AT_name) */
+ .uleb128 0x8 /* (DW_FORM_string) */
+ .byte 0x0
+ .byte 0x0
+
+ .uleb128 0x2 /* (abbrev code) */
+ .uleb128 0x2e /* (DW_TAG_subprogram) */
+ .byte 0x0 /* DW_children_no */
+ .uleb128 0x3f /* (DW_AT_external) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .uleb128 0x3 /* (DW_AT_name) */
+ .uleb128 0x8 /* (DW_FORM_string) */
+ .uleb128 0x11 /* (DW_AT_low_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x12 /* (DW_AT_high_pc) */
+ .uleb128 0x1 /* (DW_FORM_addr) */
+ .uleb128 0x27 /* (DW_AT_prototyped) */
+ .uleb128 0xc /* (DW_FORM_flag) */
+ .byte 0x0
+ .byte 0x0
+
+ .byte 0x0
--- /dev/null
+# Copyright 2011 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/>.
+load_lib dwarf.exp
+
+# This test can only be run on targets which support DWARF-2 and use gas.
+if {![dwarf2_support]} {
+ return 0
+}
+
+set testfile "dw2-empty-pc-range"
+set srcfile ${testfile}.S
+set executable ${testfile}.x
+set binfile ${objdir}/${subdir}/${executable}
+
+if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" object {}] != "" } {
+ return -1
+}
+
+clean_restart $executable
+gdb_test "ptype emptyrange" {No symbol "emptyrange" in current context\.} \
+ "empty range before CU load"
+
+# Force loading the CU
+gdb_test "ptype realrange" {type = void \(void\)} \
+ "valid range after CU load"
+
+gdb_test "ptype emptyrange" {No symbol "emptyrange" in current context\.} \
+ "empty range after CU load"
*/
.text
-_ZN1N1cE:
+text_start:
+_ZN1N1cE:
+ /* Valid function must have non-empty PC range. */
+ .byte 0
+text_end:
+
.section .debug_info
d:
.long .Ldebug_info_end - 1f /* Length of CU info */
.byte 0x4 /* DW_AT_language */
.long .LASF5 /* DW_AT_name */
.long .LASF6 /* DW_AT_comp_dir */
- .long 0x0 /* DW_AT_low_pc */
- .long 0x0 /* DW_AT_high_pc */
- .long 0x0 /* DW_AT_entry_pc */
+ .long text_start /* DW_AT_low_pc */
+ .long text_end /* DW_AT_high_pc */
+ .long text_start /* DW_AT_entry_pc */
die29: .uleb128 0x2 /* DW_TAG_namespace */
.string "N" /* DW_AT_name */
die32: .uleb128 0x3 /* DW_TAG_class_type */
dieb4: .uleb128 0xf /* DW_TAG_subprogram */
.long die95-d /* DW_AT_abstract_origin */
.long _ZN1N1cE /* DW_AT_low_pc */
- .long _ZN1N1cE /* DW_AT_high_pc */
+ .long _ZN1N1cE + 1 /* DW_AT_high_pc */
diec9: .uleb128 0x10 /* DW_TAG_subprogram */
.long die9f-d /* DW_AT_abstract_origin */
.byte 2f-1f /* DW_AT_location */
.long .LASF8 /* DW_AT_name */
.long dief2-d /* DW_AT_type */
.long _ZN1N1cE /* DW_AT_low_pc */
- .long _ZN1N1cE /* DW_AT_high_pc */
+ .long _ZN1N1cE + 1 /* DW_AT_high_pc */
dief2: .uleb128 0x12 /* DW_TAG_base_type */
.byte 0x4 /* DW_AT_byte_size */
.byte 0x5 /* DW_AT_encoding */
OSDN Git Service
