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Re: [PING] Re: [PATCH v4] PR 18303, Tolerate malformed input for lookup_symbol-called functions (was: Re: [PATCH] Fix problem handling colon in linespec, PR breakpoints/18303)
- From: Don Breazeal <donb at codesourcery dot com>
- To: <gdb-patches at sourceware dot org>, Pedro Alves <palves at redhat dot com>
- Date: Mon, 14 Mar 2016 14:23:26 -0700
- Subject: Re: [PING] Re: [PATCH v4] PR 18303, Tolerate malformed input for lookup_symbol-called functions (was: Re: [PATCH] Fix problem handling colon in linespec, PR breakpoints/18303)
- Authentication-results: sourceware.org; auth=none
- References: <1454021528-7073-1-git-send-email-donb at codesourcery dot com> <56B39A52 dot 9010203 at codesourcery dot com> <56C609E5 dot 3060506 at codesourcery dot com> <56CF3992 dot 7000200 at codesourcery dot com> <56D88019 dot 7040105 at codesourcery dot com>
On 1/28/2016 4:06 AM, Pedro Alves wrote:
> On 01/28/2016 01:21 AM, Don Breazeal wrote:
>> The patch includes three new tests related to this. One is just
>> gdb.linespec/ls-errs.exp copied and converted to use C++ instead of
C, and
>> to add a case using a file name containing a Windows-style logical drive
>> specifier.
> ....
>> gdb/testsuite/gdb.linespec/ls-errs-cp.cc | 36 +++++
>> gdb/testsuite/gdb.linespec/ls-errs-cp.exp | 240
++++++++++++++++++++++++++++
> ...
>
> Can't we somehow reuse the existing test? Say, either:
>
> - move the main body of ls-errs.exp a procedure, and call it twice,
> once for each language, or,
>
> - make gdb.linespec/ls-errs-cp.exp set some $language var and then
> source gdb.linespec/ls-errs.exp, like gdb.base/checkpoint-ns.exp.
>
> Thanks,
> Pedro Alves
>
Hi Pedro,
I used your first suggestion above. Did you have any other comments
for this one, or is it good to go?
Thanks,
--Don
On 3/3/2016 10:19 AM, Don Breazeal wrote:
> Ping.
> I checked, the patch still applies cleanly to mainline.
> Thanks
> --Don
>
> On 2/25/2016 9:27 AM, Don Breazeal wrote:
>> Ping
>> Thanks
>> --Don
>>
>> On 2/18/2016 10:13 AM, Don Breazeal wrote:
>>> Ping.
>>> Current status of this one:
>>> - Doug approved (at least in concept) Keith's fix below.
>>> - Pedro requested that the new C++ linespec error test be consolidated
>>> with the existing C version of the test. That's done in this version.
>>> Thanks!
>>> --Don
>>>
>>> On 2/4/2016 10:37 AM, Don Breazeal wrote:
>>>> Ping?
>>>> thanks
>>>> --Don
>>>>
>>>> On 1/28/2016 2:52 PM, Don Breazeal wrote:
>>>>> Apologies -- the previous version of this patch was missing one file,
>>>>> added here. Sorry for the noise.
>>>>> --Don
>>>>>
>>>>> ---V3 Comment---
>>>>> This patch differs from v2 in that the new test gdb.linespec/ls-errs-cp.exp
>>>>> is gone, and instead (per Pedro's suggestion) gdb.linespec/ls-errs.exp has
>>>>> been modified to test both C & C++, and to incorporate the small amount of
>>>>> extra testing from ls-errs-cp.exp.
>>>>>
>>>>> It also includes, unchanged from the previous version of the patch:
>>>>>
>>>>> * an updated version of the alternate fix that Keith proposed for my
>>>>> patch that addressed PR breakpoints/18303. Doug has approved (in
>>>>> concept, at least) the code portion of the patch.
>>>>>
>>>>> * a couple of other new tests of colons in linespecs.
>>>>>
>>>>> Thanks,
>>>>> --Don
>>>>>
>>>>> -----------
>>>>> lookup_symbol is often called with user input. Consequently, any
>>>>> function called from lookup_symbol{,_in_language} should attempt to
>>>>> deal with malformed input gracefully. After all, malformed user
>>>>> input is not a programming/API error.
>>>>>
>>>>> This patch does not attempt to find/correct all instances of this. It
>>>>> only fixes locations in the code that trigger test suite failures.
>>>>>
>>>>> This patch fixes PR breakpoints/18303, "Assertion: -breakpoint-insert
>>>>> with windows paths of file in non-current directory".
>>>>>
>>>>> The patch includes three new tests related to this. One is just
>>>>> gdb.linespec/ls-errs.exp copied and converted to use C++ instead of C, and
>>>>> to add a case using a file name containing a Windows-style logical drive
>>>>> specifier. The others include an MI test to provide a regression test for
>>>>> the specific case reported in PR 18303, and a C++ test for proper error
>>>>> handling of access to a program variable when using a file scope specifier
>>>>> that refers to a non-existent file.
>>>>>
>>>>> Tested on x86_64 native Linux.
>>>>>
>>>>> gdb/ChangeLog
>>>>> 2016-01-28 Keith Seitz <keiths@redhat.com>
>>>>>
>>>>> PR breakpoints/18303
>>>>> * cp-namespace.c (cp_lookup_bare_symbol): Change assertion to
>>>>> look for "::" instead of simply ":".
>>>>> (cp_search_static_and_baseclasses): Return null_block_symbol for
>>>>> malformed input.
>>>>> Remove assertions.
>>>>> * cp-support.c (cp_find_first_component_aux): Do not return
>>>>> a prefix length for ':' unless the next character is also ':'.
>>>>>
>>>>> gdb/testsuite/ChangeLog
>>>>> 2016-01-28 Don Breazeal <donb@codesourcery.com>
>>>>>
>>>>> * gdb.cp/scope-err.cc: New test program.
>>>>> * gdb.cp/scope-err.exp: New test script.
>>>>> * gdb.linespec/ls-errs.c (myfunction): Expanded to have multiple
>>>>> lines and "set breakpoint here" comment.
>>>>> * gdb.linespec/ls-errs.exp: Added C++ testing and new test case.
>>>>> * gdb.mi/mi-linespec-err-cp.cc: New test program.
>>>>> * gdb.mi/mi-linespec-err-cp.exp: New test script.
>>>>>
>>>>> ---
>>>>> gdb/cp-namespace.c | 9 +-
>>>>> gdb/cp-support.c | 7 +-
>>>>> gdb/testsuite/gdb.cp/scope-err.cc | 35 +++
>>>>> gdb/testsuite/gdb.cp/scope-err.exp | 47 ++++
>>>>> gdb/testsuite/gdb.linespec/ls-errs.c | 13 +-
>>>>> gdb/testsuite/gdb.linespec/ls-errs.exp | 384 +++++++++++++++-------------
>>>>> gdb/testsuite/gdb.mi/mi-linespec-err-cp.cc | 35 +++
>>>>> gdb/testsuite/gdb.mi/mi-linespec-err-cp.exp | 57 +++++
>>>>> 8 files changed, 405 insertions(+), 182 deletions(-)
>>>>>
>>>>> diff --git a/gdb/cp-namespace.c b/gdb/cp-namespace.c
>>>>> index 72002d6..016a42f 100644
>>>>> --- a/gdb/cp-namespace.c
>>>>> +++ b/gdb/cp-namespace.c
>>>>> @@ -170,7 +170,7 @@ cp_lookup_bare_symbol (const struct language_defn *langdef,
>>>>> ':' may be in the args of a template spec. This isn't intended to be
>>>>> a complete test, just cheap and documentary. */
>>>>> if (strchr (name, '<') == NULL && strchr (name, '(') == NULL)
>>>>> - gdb_assert (strchr (name, ':') == NULL);
>>>>> + gdb_assert (strstr (name, "::") == NULL);
>>>>>
>>>>> sym = lookup_symbol_in_static_block (name, block, domain);
>>>>> if (sym.symbol != NULL)
>>>>> @@ -246,10 +246,9 @@ cp_search_static_and_baseclasses (const char *name,
>>>>> struct block_symbol klass_sym;
>>>>> struct type *klass_type;
>>>>>
>>>>> - /* The test here uses <= instead of < because Fortran also uses this,
>>>>> - and the module.exp testcase will pass "modmany::" for NAME here. */
>>>>> - gdb_assert (prefix_len + 2 <= strlen (name));
>>>>> - gdb_assert (name[prefix_len + 1] == ':');
>>>>> + /* Check for malformed input. */
>>>>> + if (prefix_len + 2 > strlen (name) || name[prefix_len + 1] != ':')
>>>>> + return null_block_symbol;
>>>>>
>>>>> /* Find the name of the class and the name of the method, variable, etc. */
>>>>>
>>>>> diff --git a/gdb/cp-support.c b/gdb/cp-support.c
>>>>> index df127c4..a71c6ad 100644
>>>>> --- a/gdb/cp-support.c
>>>>> +++ b/gdb/cp-support.c
>>>>> @@ -1037,8 +1037,13 @@ cp_find_first_component_aux (const char *name, int permissive)
>>>>> return strlen (name);
>>>>> }
>>>>> case '\0':
>>>>> - case ':':
>>>>> return index;
>>>>> + case ':':
>>>>> + /* ':' marks a component iff the next character is also a ':'.
>>>>> + Otherwise it is probably malformed input. */
>>>>> + if (name[index + 1] == ':')
>>>>> + return index;
>>>>> + break;
>>>>> case 'o':
>>>>> /* Operator names can screw up the recursion. */
>>>>> if (operator_possible
>>>>> diff --git a/gdb/testsuite/gdb.cp/scope-err.cc b/gdb/testsuite/gdb.cp/scope-err.cc
>>>>> new file mode 100644
>>>>> index 0000000..19c92d8
>>>>> --- /dev/null
>>>>> +++ b/gdb/testsuite/gdb.cp/scope-err.cc
>>>>> @@ -0,0 +1,35 @@
>>>>> +/* This testcase is part of GDB, the GNU debugger.
>>>>> +
>>>>> + Copyright 2016 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/>. */
>>>>> +
>>>>> +int
>>>>> +myfunction (int aa)
>>>>> +{
>>>>> + int i;
>>>>> +
>>>>> + i = aa + 42;
>>>>> + return i; /* set breakpoint here */
>>>>> +}
>>>>> +
>>>>> +int
>>>>> +main (void)
>>>>> +{
>>>>> + int a;
>>>>> +
>>>>> + a = myfunction (a);
>>>>> +
>>>>> + return a;
>>>>> +}
>>>>> diff --git a/gdb/testsuite/gdb.cp/scope-err.exp b/gdb/testsuite/gdb.cp/scope-err.exp
>>>>> new file mode 100644
>>>>> index 0000000..9d93578
>>>>> --- /dev/null
>>>>> +++ b/gdb/testsuite/gdb.cp/scope-err.exp
>>>>> @@ -0,0 +1,47 @@
>>>>> +# Copyright 2012-2016 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/>.
>>>>> +
>>>>> +# Tests for linespec errors with C++.
>>>>> +# Derived from gdb.linespec/ls-errs.exp.
>>>>> +
>>>>> +if { [skip_cplus_tests] } { continue }
>>>>> +
>>>>> +standard_testfile .cc
>>>>> +set exefile $testfile
>>>>> +
>>>>> +if {[prepare_for_testing $testfile $exefile $srcfile {debug c++}]} {
>>>>> + return -1
>>>>> +}
>>>>> +
>>>>> +if ![runto_main] {
>>>>> + fail "Can't run to main"
>>>>> + return 0
>>>>> +}
>>>>> +
>>>>> +# Run to a location in the file.
>>>>> +set bp_location [gdb_get_line_number "set breakpoint here"]
>>>>> +
>>>>> +gdb_test "break $srcfile:$bp_location" \
>>>>> + "Breakpoint.*at.* file .*$srcfile, line $bp_location\\." \
>>>>> + "breakpoint line number in file"
>>>>> +
>>>>> +gdb_continue_to_breakpoint "$bp_location"
>>>>> +
>>>>> +# Try to access a variable using scope that is a non-existent filename
>>>>> +# with a Windows-style logical drive in the name.
>>>>> +set nonexistent_file C:/does/not/exist.cc
>>>>> +gdb_test "print '$nonexistent_file'::var" \
>>>>> + ".*No symbol \"$nonexistent_file\" in current context.*" \
>>>>> + "print var from \"$nonexistent_file\""
>>>>> diff --git a/gdb/testsuite/gdb.linespec/ls-errs.c b/gdb/testsuite/gdb.linespec/ls-errs.c
>>>>> index ca41342..a3a43db 100644
>>>>> --- a/gdb/testsuite/gdb.linespec/ls-errs.c
>>>>> +++ b/gdb/testsuite/gdb.linespec/ls-errs.c
>>>>> @@ -15,14 +15,21 @@
>>>>> You should have received a copy of the GNU General Public License
>>>>> along with this program. If not, see <http://www.gnu.org/licenses/>. */
>>>>>
>>>>> -int myfunction (void) { return 0; }
>>>>> +int
>>>>> +myfunction (int aa)
>>>>> +{
>>>>> + int i;
>>>>> +
>>>>> + i = aa + 42;
>>>>> + return i; /* set breakpoint here */
>>>>> +}
>>>>>
>>>>> int
>>>>> main (void)
>>>>> -{
>>>>> +{
>>>>> int a;
>>>>>
>>>>> - a = myfunction ();
>>>>> + a = myfunction (a);
>>>>>
>>>>> here:
>>>>> return a;
>>>>> diff --git a/gdb/testsuite/gdb.linespec/ls-errs.exp b/gdb/testsuite/gdb.linespec/ls-errs.exp
>>>>> index 16d4574..35f8f78 100644
>>>>> --- a/gdb/testsuite/gdb.linespec/ls-errs.exp
>>>>> +++ b/gdb/testsuite/gdb.linespec/ls-errs.exp
>>>>> @@ -13,209 +13,247 @@
>>>>> # You should have received a copy of the GNU General Public License
>>>>> # along with this program. If not, see <http://www.gnu.org/licenses/>.
>>>>>
>>>>> -# Tests for linespec error conditions
>>>>> +# Tests for linespec errors with C and C++.
>>>>>
>>>>> -standard_testfile
>>>>> -set exefile $testfile
>>>>> +# The test proper. LANG is either C or C++.
>>>>>
>>>>> -if {[prepare_for_testing $testfile $exefile $srcfile \
>>>>> - {debug nowarnings}]} {
>>>>> - return -1
>>>>> -}
>>>>> +proc do_test {lang} {
>>>>> + global testfile srcfile error_messages compiler_info
>>>>>
>>>>> -# Turn off the pending breakpoint queries.
>>>>> -gdb_test_no_output "set breakpoint pending off"
>>>>> + standard_testfile
>>>>> + set exefile $testfile
>>>>> + if [info exists compiler_info] {
>>>>> + # Unsetting compiler_info allows us to switch compilers
>>>>> + # used by prepare_for_testing.
>>>>> + unset compiler_info
>>>>> + }
>>>>> + set options {debug}
>>>>>
>>>>> -# Turn off completion limiting
>>>>> -gdb_test_no_output "set max-completions unlimited"
>>>>> + if { $lang == "C++" } {
>>>>> + if { [skip_cplus_tests] } { return 0 }
>>>>> + # Build ".c" source file with g++.
>>>>> + lappend options "c++"
>>>>> + }
>>>>>
>>>>> -# We intentionally do not use gdb_breakpoint for these tests.
>>>>> + if {[prepare_for_testing $testfile $exefile $srcfile $options]} {
>>>>> + return -1
>>>>> + }
>>>>>
>>>>> -# Break at 'linespec' and expect the message in ::error_messages indexed by
>>>>> -# msg_id with the associated args.
>>>>> -proc test_break {linespec msg_id args} {
>>>>> - global error_messages
>>>>> + # Turn off the pending breakpoint queries.
>>>>> + gdb_test_no_output "set breakpoint pending off"
>>>>>
>>>>> - gdb_test "break $linespec" [string_to_regexp \
>>>>> - [eval format \$error_messages($msg_id) $args]]
>>>>> -}
>>>>> + # Turn off completion limiting
>>>>> + gdb_test_no_output "set max-completions unlimited"
>>>>>
>>>>> -# Common error message format strings.
>>>>> -array set error_messages {
>>>>> - invalid_file "No source file named %s."
>>>>> - invalid_function "Function \"%s\" not defined."
>>>>> - invalid_var_or_func "Undefined convenience variable or function \"%s\" not defined."
>>>>> - invalid_function_f "Function \"%s\" not defined in \"%s\"."
>>>>> - invalid_var_or_func_f \
>>>>> - "Undefined convenience variable or function \"%s\" not defined in \"%s\"."
>>>>> - invalid_label "No label \"%s\" defined in function \"%s\"."
>>>>> - invalid_parm "invalid linespec argument, \"%s\""
>>>>> - invalid_offset "No line %d in the current file."
>>>>> - invalid_offset_f "No line %d in file \"%s\"."
>>>>> - malformed_line_offset "malformed line offset: \"%s\""
>>>>> - source_incomplete \
>>>>> - "Source filename requires function, label, or line offset."
>>>>> - unexpected "malformed linespec error: unexpected %s"
>>>>> - unexpected_opt "malformed linespec error: unexpected %s, \"%s\""
>>>>> - unmatched_quote "unmatched quote"
>>>>> - garbage "Garbage '%s' at end of command"
>>>>> -}
>>>>> + if ![runto_main] {
>>>>> + fail "Can't run to main"
>>>>> + return 0
>>>>> + }
>>>>>
>>>>> -# Some commonly used whitespace tests around ':'.
>>>>> -set spaces [list ":" ": " " :" " : " "\t: " " :\t" "\t:\t" " \t:\t " \
>>>>> - "\t \t:\t \t \t"]
>>>>> + # Run to a location in the file.
>>>>> + set bp_location [gdb_get_line_number "set breakpoint here"]
>>>>> +
>>>>> + gdb_test "break $srcfile:$bp_location" \
>>>>> + "Breakpoint.*at.* file .*$srcfile, line $bp_location\\." \
>>>>> + "breakpoint line number in file"
>>>>> +
>>>>> + gdb_continue_to_breakpoint "$bp_location"
>>>>> +
>>>>> + # Common error message format strings.
>>>>> + array set error_messages {
>>>>> + invalid_file "No source file named %s."
>>>>> + invalid_function "Function \"%s\" not defined."
>>>>> + invalid_var_or_func
>>>>> + "Undefined convenience variable or function \"%s\" not defined."
>>>>> + invalid_function_f "Function \"%s\" not defined in \"%s\"."
>>>>> + invalid_var_or_func_f \
>>>>> + "Undefined convenience variable or function \"%s\" not defined in \"%s\"."
>>>>> + invalid_label "No label \"%s\" defined in function \"%s\"."
>>>>> + invalid_parm "invalid linespec argument, \"%s\""
>>>>> + invalid_offset "No line %d in the current file."
>>>>> + invalid_offset_f "No line %d in file \"%s\"."
>>>>> + malformed_line_offset "malformed line offset: \"%s\""
>>>>> + source_incomplete \
>>>>> + "Source filename requires function, label, or line offset."
>>>>> + unexpected "malformed linespec error: unexpected %s"
>>>>> + unexpected_opt "malformed linespec error: unexpected %s, \"%s\""
>>>>> + unmatched_quote "unmatched quote"
>>>>> + garbage "Garbage '%s' at end of command"
>>>>> + }
>>>>>
>>>>> -# A list of invalid offsets.
>>>>> -set invalid_offsets [list -100 +500 1000]
>>>>> + # We intentionally do not use gdb_breakpoint for these tests.
>>>>>
>>>>> -# Try some simple, invalid linespecs involving spaces.
>>>>> -foreach x $spaces {
>>>>> - test_break $x unexpected "colon"
>>>>> -}
>>>>> + # Break at 'linespec' and expect the message in ::error_messages
>>>>> + # indexed by msg_id with the associated args.
>>>>> + proc test_break {linespec msg_id args} {
>>>>> + global error_messages
>>>>>
>>>>> -# Test invalid filespecs starting with offset. This is done
>>>>> -# first so that default offsets are tested.
>>>>> -foreach x $invalid_offsets {
>>>>> - set offset $x
>>>>> -
>>>>> - # Relative offsets are relative to line 16. Adjust
>>>>> - # expected offset from error message accordingly.
>>>>> - if {[string index $x 0] == "+" ||
>>>>> - [string index $x 0] == "-"} {
>>>>> - incr offset 16
>>>>> + gdb_test "break $linespec" [string_to_regexp \
>>>>> + [eval format \$error_messages($msg_id) \
>>>>> + $args]]
>>>>> }
>>>>> - test_break $x invalid_offset $offset
>>>>> - test_break "-line $x" invalid_offset $offset
>>>>> -}
>>>>>
>>>>> -# Test offsets with trailing tokens w/ and w/o spaces.
>>>>> -foreach x $spaces {
>>>>> - test_break "3$x" unexpected "colon"
>>>>> - test_break "+10$x" unexpected "colon"
>>>>> - test_break "-10$x" unexpected "colon"
>>>>> -}
>>>>> + # Some commonly used whitespace tests around ':'.
>>>>> + set spaces [list ":" ": " " :" " : " "\t: " " :\t" "\t:\t" \
>>>>> + " \t:\t " "\t \t:\t \t \t"]
>>>>>
>>>>> -foreach x {1 +1 +100 -10} {
>>>>> - test_break "3 $x" unexpected_opt "number" $x
>>>>> - test_break "-line 3 $x" garbage $x
>>>>> - test_break "+10 $x" unexpected_opt "number" $x
>>>>> - test_break "-line +10 $x" garbage $x
>>>>> - test_break "-10 $x" unexpected_opt "number" $x
>>>>> - test_break "-line -10 $x" garbage $x
>>>>> -}
>>>>> + # A list of invalid offsets.
>>>>> + set invalid_offsets [list -100 +500 1000]
>>>>>
>>>>> -foreach x {3 +10 -10} {
>>>>> - test_break "$x foo" unexpected_opt "string" "foo"
>>>>> - test_break "-line $x foo" garbage "foo"
>>>>> -}
>>>>> + # Try some simple, invalid linespecs involving spaces.
>>>>> + foreach x $spaces {
>>>>> + test_break $x unexpected "colon"
>>>>> + }
>>>>>
>>>>> -# Test invalid linespecs starting with filename.
>>>>> -foreach x [list "this_file_doesn't_exist.c" \
>>>>> - "this file has spaces.c" \
>>>>> - "\"file::colons.c\"" \
>>>>> - "'file::colons.c'" \
>>>>> - "\"this \"file\" has quotes.c\"" \
>>>>> - "'this \"file\" has quotes.c'" \
>>>>> - "'this 'file' has quotes.c'" \
>>>>> - "\"this 'file' has quotes.c\"" \
>>>>> - "\"spaces: and :colons.c\"" \
>>>>> - "'more: :spaces: :and colons::.c'"] {
>>>>> - # Remove any quoting from FILENAME for the error message.
>>>>> - test_break "$x:3" invalid_file [string trim $x \"']
>>>>> -}
>>>>> -foreach x [list "this_file_doesn't_exist.c" \
>>>>> - "file::colons.c" \
>>>>> - "'file::colons.c'"] {
>>>>> - test_break "-source $x -line 3" \
>>>>> - invalid_file [string trim $x \"']
>>>>> -}
>>>>> + # Test invalid filespecs starting with offset. This is done
>>>>> + # first so that default offsets are tested.
>>>>> + foreach x $invalid_offsets {
>>>>> + set offset $x
>>>>> +
>>>>> + # Relative offsets are relative to line 16. Adjust
>>>>> + # expected offset from error message accordingly.
>>>>> + if {[string index $x 0] == "+" || [string index $x 0] == "-"} {
>>>>> + incr offset 24
>>>>> + }
>>>>> + test_break $x invalid_offset $offset
>>>>> + test_break "-line $x" invalid_offset $offset
>>>>> + }
>>>>> +
>>>>> + # Test offsets with trailing tokens w/ and w/o spaces.
>>>>> + foreach x $spaces {
>>>>> + test_break "3$x" unexpected "colon"
>>>>> + test_break "+10$x" unexpected "colon"
>>>>> + test_break "-10$x" unexpected "colon"
>>>>> + }
>>>>> +
>>>>> + foreach x {1 +1 +100 -10} {
>>>>> + test_break "3 $x" unexpected_opt "number" $x
>>>>> + test_break "-line 3 $x" garbage $x
>>>>> + test_break "+10 $x" unexpected_opt "number" $x
>>>>> + test_break "-line +10 $x" garbage $x
>>>>> + test_break "-10 $x" unexpected_opt "number" $x
>>>>> + test_break "-line -10 $x" garbage $x
>>>>> + }
>>>>>
>>>>> -# Test that option lexing stops at whitespace boundaries
>>>>> -test_break "-source this file has spaces.c -line 3" \
>>>>> - invalid_file "this"
>>>>> + foreach x {3 +10 -10} {
>>>>> + test_break "$x foo" unexpected_opt "string" "foo"
>>>>> + test_break "-line $x foo" garbage "foo"
>>>>> + }
>>>>>
>>>>> -test_break "-function function whitespace" \
>>>>> - invalid_function "function"
>>>>> + # Test invalid linespecs starting with filename.
>>>>> + # It's OK to use the ".c" extension for the C++ test
>>>>> + # since the extension doesn't affect GDB's lookup.
>>>>> + set invalid_files [list "this_file_doesn't_exist.c" \
>>>>> + "this file has spaces.c" \
>>>>> + "\"file::colons.c\"" \
>>>>> + "'file::colons.c'" \
>>>>> + "\"this \"file\" has quotes.c\"" \
>>>>> + "'this \"file\" has quotes.c'" \
>>>>> + "'this 'file' has quotes.c'" \
>>>>> + "\"this 'file' has quotes.c\"" \
>>>>> + "\"spaces: and :colons.c\"" \
>>>>> + "'more: :spaces: :and colons::.c'" \
>>>>> + "C:/nonexist-with-windrive.c"]
>>>>> +
>>>>> + foreach x $invalid_files {
>>>>> + # Remove any quoting from FILENAME for the error message.
>>>>> + test_break "$x:3" invalid_file [string trim $x \"']
>>>>> + }
>>>>> + foreach x [list "this_file_doesn't_exist.c" \
>>>>> + "file::colons.c" \
>>>>> + "'file::colons.c'"] {
>>>>> + test_break "-source $x -line 3" invalid_file [string trim $x \"']
>>>>> + }
>>>>>
>>>>> -test_break "-source $srcfile -function function whitespace" \
>>>>> - invalid_function_f "function" $srcfile
>>>>> + # Test that option lexing stops at whitespace boundaries
>>>>> + test_break "-source this file has spaces.c -line 3" invalid_file "this"
>>>>> + test_break "-function function whitespace" invalid_function "function"
>>>>> + test_break "-source $srcfile -function function whitespace" \
>>>>> + invalid_function_f "function" $srcfile
>>>>>
>>>>> -test_break "-function main -label label whitespace" \
>>>>> - invalid_label "label" "main"
>>>>> + test_break "-function main -label label whitespace" \
>>>>> + invalid_label "label" "main"
>>>>>
>>>>> -# Test unmatched quotes.
>>>>> -foreach x {"\"src-file.c'" "'src-file.c"} {
>>>>> - test_break "$x:3" unmatched_quote
>>>>> -}
>>>>> + # Test unmatched quotes.
>>>>> + foreach x {"\"src-file.c'" "'src-file.c"} {
>>>>> + test_break "$x:3" unmatched_quote
>>>>> + }
>>>>>
>>>>> -test_break $srcfile invalid_function $srcfile
>>>>> -foreach x {"foo" " foo" " foo "} {
>>>>> - # Trim any leading/trailing whitespace for error messages.
>>>>> - test_break "$srcfile:$x" invalid_function_f [string trim $x] $srcfile
>>>>> - test_break "-source $srcfile -function $x" \
>>>>> - invalid_function_f [string trim $x] $srcfile
>>>>> - test_break "$srcfile:main:$x" invalid_label [string trim $x] "main"
>>>>> - test_break "-source $srcfile -function main -label $x" \
>>>>> - invalid_label [string trim $x] "main"
>>>>> -}
>>>>> + test_break $srcfile invalid_function $srcfile
>>>>> + foreach x {"foo" " foo" " foo "} {
>>>>> + # Trim any leading/trailing whitespace for error messages.
>>>>> + test_break "$srcfile:$x" invalid_function_f [string trim $x] $srcfile
>>>>> + test_break "-source $srcfile -function $x" \
>>>>> + invalid_function_f [string trim $x] $srcfile
>>>>> + test_break "$srcfile:main:$x" invalid_label [string trim $x] "main"
>>>>> + test_break "-source $srcfile -function main -label $x" \
>>>>> + invalid_label [string trim $x] "main"
>>>>> + }
>>>>>
>>>>> -foreach x $spaces {
>>>>> - test_break "$srcfile$x" unexpected "end of input"
>>>>> - test_break "$srcfile:main$x" unexpected "end of input"
>>>>> -}
>>>>> + foreach x $spaces {
>>>>> + test_break "$srcfile$x" unexpected "end of input"
>>>>> + test_break "$srcfile:main$x" unexpected "end of input"
>>>>> + }
>>>>>
>>>>> -test_break "${srcfile}::" invalid_function "${srcfile}::"
>>>>> -test_break "$srcfile:3 1" unexpected_opt "number" "1"
>>>>> -test_break "-source $srcfile -line 3 1" garbage "1"
>>>>> -test_break "$srcfile:3 +100" unexpected_opt "number" "+100"
>>>>> -test_break "-source $srcfile -line 3 +100" garbage "+100"
>>>>> -test_break "$srcfile:3 -100" unexpected_opt "number" "-100"
>>>>> -test_break "$srcfile:3 foo" unexpected_opt "string" "foo"
>>>>> -test_break "-source $srcfile -line 3 foo" garbage "foo"
>>>>> -
>>>>> -foreach x $invalid_offsets {
>>>>> - test_break "$srcfile:$x" invalid_offset_f $x $srcfile
>>>>> - test_break "\"$srcfile:$x\"" invalid_offset_f $x $srcfile
>>>>> - test_break "'$srcfile:$x'" invalid_offset_f $x $srcfile
>>>>> - test_break "-source $srcfile -line $x" invalid_offset_f $x $srcfile
>>>>> -}
>>>>> -test_break "-source $srcfile -line -x" malformed_line_offset "-x"
>>>>> + test_break "${srcfile}::" invalid_function "${srcfile}::"
>>>>> + test_break "$srcfile:3 1" unexpected_opt "number" "1"
>>>>> + test_break "-source $srcfile -line 3 1" garbage "1"
>>>>> + test_break "$srcfile:3 +100" unexpected_opt "number" "+100"
>>>>> + test_break "-source $srcfile -line 3 +100" garbage "+100"
>>>>> + test_break "$srcfile:3 -100" unexpected_opt "number" "-100"
>>>>> + test_break "$srcfile:3 foo" unexpected_opt "string" "foo"
>>>>> + test_break "-source $srcfile -line 3 foo" garbage "foo"
>>>>> +
>>>>> + foreach x $invalid_offsets {
>>>>> + test_break "$srcfile:$x" invalid_offset_f $x $srcfile
>>>>> + test_break "\"$srcfile:$x\"" invalid_offset_f $x $srcfile
>>>>> + test_break "'$srcfile:$x'" invalid_offset_f $x $srcfile
>>>>> + test_break "-source $srcfile -line $x" invalid_offset_f $x $srcfile
>>>>> + }
>>>>> + test_break "-source $srcfile -line -x" malformed_line_offset "-x"
>>>>>
>>>>> -# Test invalid filespecs starting with function.
>>>>> -foreach x {"foobar" "foo::bar" "foo.bar" "foo ." "foo bar" "foo 1" \
>>>>> + # Test invalid filespecs starting with function.
>>>>> + foreach x {"foobar" "foo::bar" "foo.bar" "foo ." "foo bar" "foo 1" \
>>>>> "foo 0" "foo +10" "foo -10" "foo +100" "foo -100"} {
>>>>> - test_break $x invalid_function $x
>>>>> - test_break "-function \"$x\"" invalid_function $x
>>>>> -}
>>>>> + test_break $x invalid_function $x
>>>>> + test_break "-function \"$x\"" invalid_function $x
>>>>> + }
>>>>>
>>>>> -foreach x $spaces {
>>>>> - test_break "main${x}there" invalid_label "there" "main"
>>>>> - if {[test_compiler_info {clang-*-*}]} { setup_xfail clang/14500 *-*-* }
>>>>> - test_break "main:here${x}" unexpected "end of input"
>>>>> -}
>>>>> + foreach x $spaces {
>>>>> + test_break "main${x}there" invalid_label "there" "main"
>>>>> + if {[test_compiler_info {clang-*-*}]} {
>>>>> + setup_xfail clang/14500 *-*-*
>>>>> + }
>>>>> + test_break "main:here${x}" unexpected "end of input"
>>>>> + }
>>>>>
>>>>> -foreach x {"3" "+100" "-100" "foo"} {
>>>>> - test_break "main 3" invalid_function "main 3"
>>>>> - test_break "-function \"main $x\"" invalid_function "main $x"
>>>>> - test_break "main:here $x" invalid_label "here $x" "main"
>>>>> - test_break "-function main -label \"here $x\"" \
>>>>> - invalid_label "here $x" "main"
>>>>> -}
>>>>> + foreach x {"3" "+100" "-100" "foo"} {
>>>>> + test_break "main 3" invalid_function "main 3"
>>>>> + test_break "-function \"main $x\"" invalid_function "main $x"
>>>>> + test_break "main:here $x" invalid_label "here $x" "main"
>>>>> + test_break "-function main -label \"here $x\"" \
>>>>> + invalid_label "here $x" "main"
>>>>> + }
>>>>>
>>>>> -foreach x {"if" "task" "thread"} {
>>>>> - test_break $x invalid_function $x
>>>>> -}
>>>>> + foreach x {"if" "task" "thread"} {
>>>>> + test_break $x invalid_function $x
>>>>> + }
>>>>>
>>>>> -test_break "'main.c'flubber" unexpected_opt "string" "flubber"
>>>>> -test_break "'main.c',21" invalid_function "main.c"
>>>>> -test_break "'main.c' " invalid_function "main.c"
>>>>> -test_break "'main.c'3" unexpected_opt "number" "3"
>>>>> -test_break "'main.c'+3" unexpected_opt "number" "+3"
>>>>> + test_break "'main.c'flubber" unexpected_opt "string" "flubber"
>>>>> + test_break "'main.c',21" invalid_function "main.c"
>>>>> + test_break "'main.c' " invalid_function "main.c"
>>>>> + test_break "'main.c'3" unexpected_opt "number" "3"
>>>>> + test_break "'main.c'+3" unexpected_opt "number" "+3"
>>>>>
>>>>> -# Test undefined convenience variables.
>>>>> -set x {$zippo}
>>>>> -test_break $x invalid_var_or_func $x
>>>>> -test_break "$srcfile:$x" invalid_var_or_func_f $x $srcfile
>>>>> + # Test undefined convenience variables.
>>>>> + set x {$zippo}
>>>>> + test_break $x invalid_var_or_func $x
>>>>> + test_break "$srcfile:$x" invalid_var_or_func_f $x $srcfile
>>>>>
>>>>> -# Explicit linespec-specific tests
>>>>> -test_break "-source $srcfile" source_incomplete
>>>>> + # Explicit linespec-specific tests
>>>>> + test_break "-source $srcfile" source_incomplete
>>>>> +}
>>>>> +
>>>>> +foreach_with_prefix lang {"C" "C++"} {
>>>>> + do_test ${lang}
>>>>> +}
>>>>> diff --git a/gdb/testsuite/gdb.mi/mi-linespec-err-cp.cc b/gdb/testsuite/gdb.mi/mi-linespec-err-cp.cc
>>>>> new file mode 100644
>>>>> index 0000000..19c92d8
>>>>> --- /dev/null
>>>>> +++ b/gdb/testsuite/gdb.mi/mi-linespec-err-cp.cc
>>>>> @@ -0,0 +1,35 @@
>>>>> +/* This testcase is part of GDB, the GNU debugger.
>>>>> +
>>>>> + Copyright 2016 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/>. */
>>>>> +
>>>>> +int
>>>>> +myfunction (int aa)
>>>>> +{
>>>>> + int i;
>>>>> +
>>>>> + i = aa + 42;
>>>>> + return i; /* set breakpoint here */
>>>>> +}
>>>>> +
>>>>> +int
>>>>> +main (void)
>>>>> +{
>>>>> + int a;
>>>>> +
>>>>> + a = myfunction (a);
>>>>> +
>>>>> + return a;
>>>>> +}
>>>>> diff --git a/gdb/testsuite/gdb.mi/mi-linespec-err-cp.exp b/gdb/testsuite/gdb.mi/mi-linespec-err-cp.exp
>>>>> new file mode 100644
>>>>> index 0000000..1a8682e
>>>>> --- /dev/null
>>>>> +++ b/gdb/testsuite/gdb.mi/mi-linespec-err-cp.exp
>>>>> @@ -0,0 +1,57 @@
>>>>> +# Copyright 2016 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/>.
>>>>> +
>>>>> +# Regression test for PR breakpoints/18303. Tests that the correct
>>>>> +# errors is generated when setting a breakpoint in a non-existent
>>>>> +# file with a Windows-style logical drive names and C++.
>>>>> +
>>>>> +if { [skip_cplus_tests] } { continue }
>>>>> +
>>>>> +load_lib mi-support.exp
>>>>> +set MIFLAGS "-i=mi"
>>>>> +
>>>>> +standard_testfile .cc
>>>>> +set exefile $testfile
>>>>> +
>>>>> +if {[prepare_for_testing $testfile $exefile $srcfile {debug c++}]} {
>>>>> + return -1
>>>>> +}
>>>>> +
>>>>> +gdb_exit
>>>>> +if [mi_gdb_start] {
>>>>> + continue
>>>>> +}
>>>>> +
>>>>> +# Turn off the pending breakpoint queries.
>>>>> +mi_gdb_test "-interpreter-exec console \"set breakpoint pending off\"" \
>>>>> + {=cmd-param-changed,param=\"breakpoint pending\",.*\^done} \
>>>>> + "-interpreter-exec console \"set breakpoint pending off\""
>>>>> +
>>>>> +mi_run_to_main
>>>>> +
>>>>> +# Run to a location in the file.
>>>>> +set bp_location [gdb_get_line_number "set breakpoint here"]
>>>>> +
>>>>> +mi_gdb_test "-break-insert ${srcfile}:${bp_location}" \
>>>>> + {\^done,bkpt=.number="2",type="breakpoint".*\}} "set breakpoint"
>>>>> +
>>>>> +mi_execute_to "exec-continue" "breakpoint-hit" "myfunction" ".*" ".*" "24" \
>>>>> + { "" "disp=\"keep\"" } "breakpoint hit"
>>>>> +
>>>>> +# Set a breakpoint in a C++ source file whose name contains a
>>>>> +# Windows-style logical drive.
>>>>> +mi_gdb_test \
>>>>> + "-break-insert -f \"c:/uu.cpp:13\"" \
>>>>> + ".*No source file named c:/uu.cpp.*"
>>>>>
>>>>
>>>
>>
>