gdb/
* dwarf2read.c (check_physname): New variable. (dwarf2_physname): Prefer DW_AT_linkage_name over dwarf2_compute_name. (show_check_physname): New function. (_initialize_dwarf2_read): Add `check-physname' for check_physname. gdb/doc/ * gdb.texinfo (Debugging Output): Document set debug check-physname. gdb/testsuite/ * gdb.base/break-interp.exp (reach_1, test_ld): Allow also the prefix __GI_. * gdb.cp/psymtab-parameter.cc (func): Make it a template function. (f): New function. * gdb.cp/psymtab-parameter.exp (complete break 'func(): Rename to ... (complete p 'func<short>(): ... here. * gdb.dwarf2/dw2-linkage-name-trust-main.cc: New file. * gdb.dwarf2/dw2-linkage-name-trust.S: New file. * gdb.dwarf2/dw2-linkage-name-trust.exp: New file. * gdb.cp/temargs.exp (test type of F in k3_m, test value of F in k3_m): Make them KFAIL gcc/49546.
This commit is contained in:
Jan Kratochvil
parent
2301925dd2
commit
900e11f9ec
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@ -1,3 +1,11 @@
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2011-07-01 Jan Kratochvil <jan.kratochvil@redhat.com>
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Tom Tromey <tromey@redhat.com>
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* dwarf2read.c (check_physname): New variable.
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(dwarf2_physname): Prefer DW_AT_linkage_name over dwarf2_compute_name.
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(show_check_physname): New function.
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(_initialize_dwarf2_read): Add `check-physname' for check_physname.
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2011-07-01 Joel Brobecker <brobecker@adacore.com>
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* machoread.c (macho_symfile_read): Delete OBE comment.
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@ -1,3 +1,8 @@
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2011-07-01 Tom Tromey <tromey@redhat.com>
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* gdb.texinfo (Debugging Output): Document set debug
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check-physname.
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2011-06-29 Tom Tromey <tromey@redhat.com>
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* gdb.texinfo (GDB/MI Miscellaneous Commands): Document
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@ -20027,6 +20027,16 @@ Display debugging messages about inner workings of the AIX thread
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module.
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@item show debug aix-thread
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Show the current state of AIX thread debugging info display.
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@item set debug check-physname
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@cindex physname
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Check the results of the ``physname'' computation. When reading DWARF
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debugging information for C@t{++}, @value{GDBN} attempts to compute
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each entity's name. @value{GDBN} can do this computation in two
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different ways, depending on exactly what information is present.
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When enabled, this setting causes @value{GDBN} to compute the names
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both ways and display any discrepancies.
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@item show debug check-physname
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Show the current state of ``physname'' checking.
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@item set debug dwarf2-die
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@cindex DWARF2 DIEs
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Dump DWARF2 DIEs after they are read in.
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106
gdb/dwarf2read.c
106
gdb/dwarf2read.c
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@ -119,6 +119,9 @@ _STATEMENT_PROLOGUE;
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/* When non-zero, dump DIEs after they are read in. */
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static int dwarf2_die_debug = 0;
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/* When non-zero, cross-check physname against demangler. */
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static int check_physname = 0;
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static int pagesize;
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/* When set, the file that we're processing is known to have debugging
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@ -5180,7 +5183,91 @@ dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu)
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static const char *
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dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu)
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{
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return dwarf2_compute_name (name, die, cu, 1);
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struct attribute *attr;
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const char *retval, *mangled = NULL, *canon = NULL;
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struct cleanup *back_to;
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int need_copy = 1;
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/* In this case dwarf2_compute_name is just a shortcut not building anything
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on its own. */
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if (!die_needs_namespace (die, cu))
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return dwarf2_compute_name (name, die, cu, 1);
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back_to = make_cleanup (null_cleanup, NULL);
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attr = dwarf2_attr (die, DW_AT_linkage_name, cu);
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if (!attr)
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attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu);
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/* DW_AT_linkage_name is missing in some cases - depend on what GDB
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has computed. */
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if (attr && DW_STRING (attr))
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{
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char *demangled;
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mangled = DW_STRING (attr);
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/* Use DMGL_RET_DROP for C++ template functions to suppress their return
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type. It is easier for GDB users to search for such functions as
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`name(params)' than `long name(params)'. In such case the minimal
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symbol names do not match the full symbol names but for template
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functions there is never a need to look up their definition from their
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declaration so the only disadvantage remains the minimal symbol
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variant `long name(params)' does not have the proper inferior type.
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*/
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demangled = cplus_demangle (mangled, (DMGL_PARAMS | DMGL_ANSI
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| (cu->language == language_java
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? DMGL_JAVA | DMGL_RET_POSTFIX
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: DMGL_RET_DROP)));
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if (demangled)
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{
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make_cleanup (xfree, demangled);
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canon = demangled;
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}
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else
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{
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canon = mangled;
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need_copy = 0;
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}
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}
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if (canon == NULL || check_physname)
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{
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const char *physname = dwarf2_compute_name (name, die, cu, 1);
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if (canon != NULL && strcmp (physname, canon) != 0)
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{
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/* It may not mean a bug in GDB. The compiler could also
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compute DW_AT_linkage_name incorrectly. But in such case
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GDB would need to be bug-to-bug compatible. */
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complaint (&symfile_complaints,
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_("Computed physname <%s> does not match demangled <%s> "
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"(from linkage <%s>) - DIE at 0x%x [in module %s]"),
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physname, canon, mangled, die->offset, cu->objfile->name);
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/* Prefer DW_AT_linkage_name (in the CANON form) - when it
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is available here - over computed PHYSNAME. It is safer
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against both buggy GDB and buggy compilers. */
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retval = canon;
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}
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else
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{
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retval = physname;
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need_copy = 0;
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}
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}
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else
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retval = canon;
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if (need_copy)
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retval = obsavestring (retval, strlen (retval),
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&cu->objfile->objfile_obstack);
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do_cleanups (back_to);
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return retval;
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}
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/* Read the import statement specified by the given die and record it. */
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@ -16254,6 +16341,15 @@ show_dwarf2_always_disassemble (struct ui_file *file, int from_tty,
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value);
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}
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static void
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show_check_physname (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file,
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_("Whether to check \"physname\" is %s.\n"),
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value);
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}
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void _initialize_dwarf2_read (void);
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void
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@ -16309,6 +16405,14 @@ The value is the maximum depth to print."),
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NULL,
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&setdebuglist, &showdebuglist);
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add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\
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Set cross-checking of \"physname\" code against demangler."), _("\
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Show cross-checking of \"physname\" code against demangler."), _("\
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When enabled, GDB's internal \"physname\" code is checked against\n\
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the demangler."),
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NULL, show_check_physname,
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&setdebuglist, &showdebuglist);
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c = add_cmd ("gdb-index", class_files, save_gdb_index_command,
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_("\
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Save a gdb-index file.\n\
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|
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@ -1,3 +1,17 @@
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2011-05-24 Jan Kratochvil <jan.kratochvil@redhat.com>
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* gdb.base/break-interp.exp (reach_1, test_ld): Allow also the prefix
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__GI_.
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* gdb.cp/psymtab-parameter.cc (func): Make it a template function.
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(f): New function.
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* gdb.cp/psymtab-parameter.exp (complete break 'func(): Rename to ...
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(complete p 'func<short>(): ... here.
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* gdb.dwarf2/dw2-linkage-name-trust-main.cc: New file.
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* gdb.dwarf2/dw2-linkage-name-trust.S: New file.
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* gdb.dwarf2/dw2-linkage-name-trust.exp: New file.
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* gdb.cp/temargs.exp (test type of F in k3_m, test value of F in k3_m):
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Make them KFAIL gcc/49546.
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2011-07-01 Joel Brobecker <brobecker@adacore.com>
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* gdb.ada/catch_ex.exp: Add temporary catchpoint tests.
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@ -140,14 +140,14 @@ proc reach_1 {func command displacement} {
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}
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exp_continue
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}
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-re "Breakpoint \[0-9\]+, \\.?$func \\(.*\\) at .*:\[0-9\]+\r\n.*$gdb_prompt $" {
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-re "Breakpoint \[0-9\]+, \\.?(__GI_)?$func \\(.*\\) at .*:\[0-9\]+\r\n.*$gdb_prompt $" {
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if {$func == "_dl_debug_state"} {
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fail $test
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} else {
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pass $test
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}
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}
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-re "Breakpoint \[0-9\]+, \[0-9xa-f\]+ in \\.?$func \\(\\).*\r\n$gdb_prompt $" {
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-re "Breakpoint \[0-9\]+, \[0-9xa-f\]+ in \\.?(__GI_)?$func \\(\\).*\r\n$gdb_prompt $" {
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if {$func == "_dl_debug_state"} {
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fail $test
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} else {
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@ -403,7 +403,7 @@ proc test_ld {file ifmain trynosym displacement} {
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reach "_dl_debug_state" "run" $displacement
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gdb_test "bt" "#0 +\[^\r\n\]*\\m_dl_debug_state\\M.*" "dl bt"
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gdb_test "bt" "#0 +\[^\r\n\]*\\m(__GI_)?_dl_debug_state\\M.*" "dl bt"
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if $ifmain {
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reach "main" continue "NONE"
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|
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@ -16,7 +16,14 @@
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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typedef int typedefed;
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void func (typedefed param)
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template <typename T>
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long
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||||
func ()
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||||
{
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||||
}
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||||
void
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||||
f ()
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||||
{
|
||||
func<short> ();
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||||
}
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|
|
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@ -35,5 +35,6 @@ gdb_test_no_output "set language c++"
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|||
# XFAIL than FAIL here. For example -readnow breaks it.
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gdb_test_no_output "maintenance info symtabs"
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# GDB has shown only the `func(int)' entry before.
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gdb_test "complete break 'func(" "break 'func\\(int\\)\r\nbreak 'func\\(typedefed\\)"
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# GDB has shown only the `long func<short>()' ELF symbol before, not the DWARF
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# symbol
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gdb_test "complete p 'func<short>(" "p 'func<short>\\(\\)"
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|
|
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|||
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|
@ -180,9 +180,11 @@ gdb_test "print F" "&S::somefunc" "test value of F in k2_m"
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|||
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||||
gdb_continue_to_breakpoint "continue to sixth breakpoint for temargs"
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||||
|
||||
if $have_older_template_gcc { setup_xfail "*-*-*" }
|
||||
if $have_older_template_gcc { setup_xfail "*-*-*"
|
||||
} else { setup_kfail gcc/49546 "*-*-*" }
|
||||
gdb_test "ptype F" {type = void \(\*\)\(int\)} "test type of F in k3_m"
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||||
|
||||
if $have_older_template_gcc { setup_xfail "*-*-*" }
|
||||
if $have_older_template_gcc { setup_xfail "*-*-*"
|
||||
} else { setup_kfail gcc/49546 "*-*-*" }
|
||||
gdb_test "print F" { = \(void \(\*\)\(int\)\) 0x[0-9a-f]+ <S3::m\(int\)>} \
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||||
"test value of F in k3_m"
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||||
|
|
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|||
|
|
@ -0,0 +1,41 @@
|
|||
/* This testcase is part of GDB, the GNU debugger.
|
||||
|
||||
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/>. */
|
||||
|
||||
/* class C
|
||||
{
|
||||
public:
|
||||
static int f ();
|
||||
}; */
|
||||
|
||||
asm (".globl cu_text_start");
|
||||
asm ("cu_text_start:");
|
||||
|
||||
int
|
||||
f (void)
|
||||
{
|
||||
return 31173;
|
||||
}
|
||||
|
||||
int
|
||||
main (void)
|
||||
{
|
||||
f ();
|
||||
return 0;
|
||||
}
|
||||
|
||||
asm (".globl cu_text_end");
|
||||
asm ("cu_text_end:");
|
||||
|
|
@ -0,0 +1,134 @@
|
|||
/* This testcase is part of GDB, the GNU debugger.
|
||||
|
||||
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/>. */
|
||||
|
||||
/* Debug information */
|
||||
|
||||
.data
|
||||
.globl c
|
||||
c: .4byte 0
|
||||
|
||||
.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 5 /* Abbrev: DW_TAG_subprogram */
|
||||
.byte 1 /* DW_AT_external */
|
||||
.ascii "membername\0" /* DW_AT_name */
|
||||
.ascii "f\0" /* DW_AT_MIPS_linkage_name */
|
||||
.4byte .Ltype_int-.Lcu1_begin /* DW_AT_type */
|
||||
|
||||
.byte 0 /* End of children of DW_TAG_class_type */
|
||||
|
||||
.uleb128 4 /* Abbrev: DW_TAG_variable */
|
||||
.ascii "c\0" /* DW_AT_name */
|
||||
.4byte .Ltype_class-.Lcu1_begin /* DW_AT_type */
|
||||
.byte 1 /* DW_AT_external */
|
||||
|
||||
.Ltype_int:
|
||||
.uleb128 2 /* Abbrev: DW_TAG_base_type */
|
||||
.ascii "int\0" /* DW_AT_name */
|
||||
.byte 4 /* DW_AT_byte_size */
|
||||
.byte 5 /* DW_AT_encoding */
|
||||
|
||||
.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 2 /* Abbrev code */
|
||||
.uleb128 0x24 /* DW_TAG_base_type */
|
||||
.byte 0 /* has_children */
|
||||
.uleb128 0x3 /* DW_AT_name */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0xb /* DW_AT_byte_size */
|
||||
.uleb128 0xb /* DW_FORM_data1 */
|
||||
.uleb128 0x3e /* DW_AT_encoding */
|
||||
.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 0x34 /* DW_TAG_variable */
|
||||
.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 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 0x3f /* DW_AT_external */
|
||||
.uleb128 0xc /* DW_FORM_flag */
|
||||
.uleb128 0x3 /* DW_AT_name */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0x2007 /* DW_AT_MIPS_linkage_name */
|
||||
.uleb128 0x8 /* DW_FORM_string */
|
||||
.uleb128 0x49 /* DW_AT_type */
|
||||
.uleb128 0x13 /* DW_FORM_ref4 */
|
||||
.byte 0x0 /* Terminator */
|
||||
.byte 0x0 /* Terminator */
|
||||
|
||||
.byte 0x0 /* Terminator */
|
||||
.byte 0x0 /* Terminator */
|
||||
|
|
@ -0,0 +1,55 @@
|
|||
# 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/>.
|
||||
|
||||
# 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 }
|
||||
|
||||
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-linkage-name-trust"
|
||||
set executable ${testfile}
|
||||
set binfile ${objdir}/${subdir}/${executable}
|
||||
if { [gdb_compile ${srcdir}/${subdir}/${testfile}-main.cc "${objdir}/${subdir}/${testfile}-main.o" object {c++ debug}] != ""
|
||||
|| [gdb_compile "${srcdir}/${subdir}/${testfile}.S" "${objdir}/${subdir}/${testfile}.o" object {}] != ""
|
||||
|| [gdb_compile "${objdir}/${subdir}/${testfile}-main.o ${objdir}/${subdir}/${testfile}.o" "${binfile}" executable {c++}] != "" } {
|
||||
return -1
|
||||
}
|
||||
|
||||
clean_restart $executable
|
||||
|
||||
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 cannot resolve external member function for which only ELF (and not
|
||||
# DWARF) symbol is available. Therefore the function `f' must have DWARF which
|
||||
# confuses it a bit.
|
||||
|
||||
gdb_test "p c.membername" " = {.*} 0x\[0-9a-f\]+ <f\\(\\)>"
|
||||
gdb_breakpoint "C::membername"
|
||||
gdb_test "p c.membername ()" "\r\nBreakpoint \[0-9\]+, .*"
|
||||
Loading…
Reference in New Issue