From 69fc87c263bbfcb062d993d70ea1e97813cd3d29 Mon Sep 17 00:00:00 2001 From: Doug Evans Date: Wed, 5 Jun 2013 22:28:51 +0000 Subject: [PATCH] PR 15519 * cp-namespace.c (find_symbol_in_baseclass): Call cp_lookup_symbol_in_namespace instead of cp_lookup_symbol_namespace. Check result of call to lookup_symbol_static. Call lookup_static_symbol_aux unconditionally. Call check_typedef on base types before accessing them. (cp_lookup_nested_symbol): Fix comment. testsuite/ * gdb.cp/derivation2.cc: New file. * gdb.cp/derivation.cc (main): Call foo2. * gdb.cp/derivation.exp: Add tests for typedefs in another file, and when there's an active block. --- gdb/ChangeLog | 11 +++++++++ gdb/cp-namespace.c | 34 +++++++++++++------------ gdb/testsuite/ChangeLog | 8 ++++++ gdb/testsuite/gdb.cp/derivation.cc | 6 ++--- gdb/testsuite/gdb.cp/derivation.exp | 14 ++++++++--- gdb/testsuite/gdb.cp/derivation2.cc | 49 +++++++++++++++++++++++++++++++++++++ 6 files changed, 101 insertions(+), 21 deletions(-) create mode 100644 gdb/testsuite/gdb.cp/derivation2.cc diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 15f1d89..5e241e2 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,14 @@ +2013-06-05 Doug Evans + Keith Seitz + + PR 15519 + * cp-namespace.c (find_symbol_in_baseclass): Call + cp_lookup_symbol_in_namespace instead of cp_lookup_symbol_namespace. + Check result of call to lookup_symbol_static. + Call lookup_static_symbol_aux unconditionally. + Call check_typedef on base types before accessing them. + (cp_lookup_nested_symbol): Fix comment. + 2013-06-05 Luis Machado * gnu-v3-abi.c (gnuv3_skip_trampoline): Handle thunk diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c index 792ed48..755aeef 100644 --- a/gdb/cp-namespace.c +++ b/gdb/cp-namespace.c @@ -720,36 +720,40 @@ find_symbol_in_baseclass (struct type *parent_type, const char *name, for (i = 0; i < TYPE_N_BASECLASSES (parent_type); ++i) { size_t len; + struct type *base_type = TYPE_BASECLASS (parent_type, i); const char *base_name = TYPE_BASECLASS_NAME (parent_type, i); if (base_name == NULL) continue; /* Search this particular base class. */ - sym = cp_lookup_symbol_namespace (base_name, name, block, VAR_DOMAIN); + sym = cp_lookup_symbol_in_namespace (base_name, name, block, + VAR_DOMAIN, 0); if (sym != NULL) break; + /* Now search all static file-level symbols. We have to do this for + things like typedefs in the class. First search in this symtab, + what we want is possibly there. */ len = strlen (base_name) + 2 + strlen (name) + 1; concatenated_name = xrealloc (concatenated_name, len); xsnprintf (concatenated_name, len, "%s::%s", base_name, name); sym = lookup_symbol_static (concatenated_name, block, VAR_DOMAIN); + if (sym != NULL) + break; - /* If there is currently no BLOCK, e.g., the inferior hasn't yet - been started, then try searching all STATIC_BLOCK symbols in - all objfiles. */ - if (block == NULL) - { - sym = lookup_static_symbol_aux (concatenated_name, VAR_DOMAIN); - if (sym != NULL) - break; - } + /* Nope. We now have to search all static blocks in all objfiles, + even if block != NULL, because there's no guarantees as to which + symtab the symbol we want is in. */ + sym = lookup_static_symbol_aux (concatenated_name, VAR_DOMAIN); + if (sym != NULL) + break; /* If this class has base classes, search them next. */ - if (TYPE_N_BASECLASSES (TYPE_BASECLASS (parent_type, i)) > 0) + CHECK_TYPEDEF (base_type); + if (TYPE_N_BASECLASSES (base_type) > 0) { - sym = find_symbol_in_baseclass (TYPE_BASECLASS (parent_type, i), - name, block); + sym = find_symbol_in_baseclass (base_type, name, block); if (sym != NULL) break; } @@ -797,8 +801,8 @@ cp_lookup_nested_symbol (struct type *parent_type, if (sym != NULL) return sym; - /* Now search all static file-level symbols. Not strictly - correct, but more useful than an error. We do not try to + /* Now search all static file-level symbols. We have to do this + for things like typedefs in the class. We do not try to guess any imported namespace as even the fully specified namespace search is already not C++ compliant and more assumptions could make it too magic. */ diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index beeab23..59ac7dd 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,3 +1,11 @@ +2013-06-05 Doug Evans + Keith Seitz + + * gdb.cp/derivation2.cc: New file. + * gdb.cp/derivation.cc (main): Call foo2. + * gdb.cp/derivation.exp: Add tests for typedefs in another + file, and when there's an active block. + 2013-06-05 Luis Machado * gdb.cp/virtfunc.exp (make_one_vtable_result): Handle extra output diff --git a/gdb/testsuite/gdb.cp/derivation.cc b/gdb/testsuite/gdb.cp/derivation.cc index 0a6a24d..2fefe79 100644 --- a/gdb/testsuite/gdb.cp/derivation.cc +++ b/gdb/testsuite/gdb.cp/derivation.cc @@ -16,6 +16,8 @@ along with this program. If not, see . */ +extern void foo2 (); /* from derivation2.cc */ + namespace N { typedef double value_type; struct Base { typedef int value_type; }; @@ -306,9 +308,7 @@ int main(void) N::Derived::value_type d = 1; N::value_type n = 3.0; dobj.doit (); + foo2 (); return 0; } - - - diff --git a/gdb/testsuite/gdb.cp/derivation.exp b/gdb/testsuite/gdb.cp/derivation.exp index 287a830..66a3a3b 100644 --- a/gdb/testsuite/gdb.cp/derivation.exp +++ b/gdb/testsuite/gdb.cp/derivation.exp @@ -32,14 +32,15 @@ if { [skip_cplus_tests] } { continue } load_lib "cp-support.exp" -standard_testfile .cc +standard_testfile derivation.cc derivation2.cc -if {[prepare_for_testing $testfile.exp $testfile $srcfile {debug c++}]} { +if {[prepare_for_testing $testfile.exp $testfile \ + [list $srcfile $srcfile2] {debug c++}]} { return -1 } # Check inheritance of typedefs. -foreach klass {"A" "D" "E" "F"} { +foreach klass {"A" "D" "E" "F" "A2" "D2"} { gdb_test "ptype ${klass}::value_type" "type = int" gdb_test "whatis ${klass}::value_type" "type = int" gdb_test "p (${klass}::value_type) 0" " = 0" @@ -57,6 +58,13 @@ if ![runto 'marker1'] then { continue } +# Check inheritance of typedefs again, but this time with an active block. +foreach klass {"A" "D" "A2" "D2"} { + gdb_test "ptype ${klass}::value_type" "type = int" + gdb_test "whatis ${klass}::value_type" "type = int" + gdb_test "p (${klass}::value_type) 0" " = 0" +} + gdb_test "up" ".*main.*" "up from marker1" # Print class types and values. diff --git a/gdb/testsuite/gdb.cp/derivation2.cc b/gdb/testsuite/gdb.cp/derivation2.cc new file mode 100644 index 0000000..b26cb63 --- /dev/null +++ b/gdb/testsuite/gdb.cp/derivation2.cc @@ -0,0 +1,49 @@ +/* This testcase is part of GDB, the GNU debugger. + + Copyright 2013 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 . + */ + +/* A copy of some classes in derivation.cc so that we can test symbol lookup + in other CUs. */ + +class A2 { +public: + typedef int value_type; + value_type a; + + A2() + { + a=1; + } +}; + +class D2 : public A2 { +public: + value_type d; + + D2() + { + d=7; + } +}; + +void +foo2 () +{ + D2 d2_instance; + d2_instance.a = 42; + d2_instance.d = 43; +} -- 2.7.4