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+# Copyright (C) 2008-2014 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/>.
+
+# This file is part of the GDB testsuite.
+# It tests the mechanism exposing values to Guile.
+
+load_lib gdb-guile.exp
+
+standard_testfile
+
+# Build inferior to language specification.
+# LANG is one of "c" or "c++".
+proc build_inferior {exefile lang} {
+ global srcdir subdir srcfile testfile hex
+
+ # Use different names for .o files based on the language.
+ # For Fission, the debug info goes in foo.dwo and we don't want,
+ # for example, a C++ compile to clobber the dwo of a C compile.
+ # ref: http://gcc.gnu.org/wiki/DebugFission
+ switch ${lang} {
+ "c" { set filename ${testfile}.o }
+ "c++" { set filename ${testfile}-cxx.o }
+ }
+ set objfile [standard_output_file $filename]
+
+ if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${objfile}" object "debug $lang"] != ""
+ || [gdb_compile "${objfile}" "${exefile}" executable "debug $lang"] != "" } {
+ untested "Couldn't compile ${srcfile} in $lang mode"
+ return -1
+ }
+ return 0
+}
+
+proc test_value_in_inferior {} {
+ global gdb_prompt
+ global testfile
+
+ gdb_breakpoint [gdb_get_line_number "break to inspect struct and union"]
+
+ gdb_continue_to_breakpoint "break to inspect struct and union"
+
+ # Just get inferior variable s in the value history, available to guile.
+ gdb_test "print s" "= {a = 3, b = 5}" ""
+
+ gdb_scm_test_silent_cmd "gu (define s (history-ref 0))" "set s"
+
+ gdb_test "gu (print (value-field s \"a\"))" \
+ "= 3" "access element inside struct using string name"
+
+ # Test dereferencing the argv pointer.
+
+ # Just get inferior variable argv the value history, available to guile.
+ gdb_test "print argv" "= \\(char \\*\\*\\) 0x.*" ""
+
+ gdb_scm_test_silent_cmd "gu (define argv (history-ref 0))" \
+ "set argv"
+ gdb_scm_test_silent_cmd "gu (define arg0 (value-dereference argv))" \
+ "set arg0"
+
+ # Check that the dereferenced value is sane.
+ if { ! [target_info exists noargs] } {
+ gdb_test "gu (print arg0)" \
+ "0x.*$testfile\"" "verify dereferenced value"
+ }
+
+ # Smoke-test value-optimized-out?.
+ gdb_test "gu (print (value-optimized-out? arg0))" \
+ "= #f" "Test value-optimized-out?"
+
+ # Test address attribute.
+ gdb_test "gu (print (value-address arg0))" \
+ "= 0x\[\[:xdigit:\]\]+" "Test address attribute"
+ # Test address attribute is #f in a non-addressable value.
+ gdb_test "gu (print (value-address (make-value 42)))" \
+ "= #f" "Test address attribute in non-addressable value"
+
+ # Test displaying a variable that is temporarily at a bad address.
+ # But if we can examine what's at memory address 0, then we'll also be
+ # able to display it without error. Don't run the test in that case.
+ set can_read_0 0
+ gdb_test_multiple "x 0" "memory at address 0" {
+ -re "0x0:\[ \t\]*Cannot access memory at address 0x0\r\n$gdb_prompt $" { }
+ -re "0x0:\[ \t\]*Error accessing memory address 0x0\r\n$gdb_prompt $" { }
+ -re "\r\n$gdb_prompt $" {
+ set can_read_0 1
+ }
+ }
+
+ # Test memory error.
+ set test "parse_and_eval with memory error"
+ if {$can_read_0} {
+ untested $test
+ } else {
+ gdb_test "gu (print (parse-and-eval \"*(int*)0\"))" \
+ "ERROR: Cannot access memory at address 0x0.*" $test
+ }
+
+ # Test Guile lazy value handling
+ set test "memory error and lazy values"
+ if {$can_read_0} {
+ untested $test
+ } else {
+ gdb_test_no_output "gu (define inval (parse-and-eval \"*(int*)0\"))"
+ gdb_test "gu (print (value-lazy? inval))" \
+ "#t"
+ gdb_test "gu (define inval2 (value-add inval 1))" \
+ "ERROR: Cannot access memory at address 0x0.*" $test
+ gdb_test "gu (value-fetch-lazy! inval))" \
+ "ERROR: Cannot access memory at address 0x0.*" $test
+ }
+ gdb_test_no_output "gu (define argc-lazy (parse-and-eval \"argc\"))"
+ gdb_test_no_output "gu (define argc-notlazy (parse-and-eval \"argc\"))"
+ gdb_test_no_output "gu (value-fetch-lazy! argc-notlazy)"
+ gdb_test "gu (print (value-lazy? argc-lazy))" "= #t"
+ gdb_test "gu (print (value-lazy? argc-notlazy))" "= #f"
+ gdb_test "print argc" "= 1" "sanity check argc"
+ gdb_test "gu (print (value-lazy? argc-lazy))" "= #t"
+ gdb_test_no_output "set argc=2"
+ gdb_test "gu (print argc-notlazy)" "= 1"
+ gdb_test "gu (print argc-lazy)" "= 2"
+ gdb_test "gu (print (value-lazy? argc-lazy))" "= #f"
+
+ # Test string fetches, both partial and whole.
+ gdb_test "print st" "\"divide et impera\""
+ gdb_scm_test_silent_cmd "gu (define st (history-ref 0))" \
+ "inf: get st value from history"
+ gdb_test "gu (print (value->string st))" \
+ "= divide et impera" "Test string with no length"
+ gdb_test "gu (print (value->string st #:length -1))" \
+ "= divide et impera" "Test string (length = -1) is all of the string"
+ gdb_test "gu (print (value->string st #:length 6))" \
+ "= divide"
+ gdb_test "gu (print (string-append \"---\" (value->string st #:length 0) \"---\"))" \
+ "= ------" "Test string (length = 0) is empty"
+ gdb_test "gu (print (string-length (value->string st #:length 0)))" \
+ "= 0" "Test length is 0"
+
+ # Fetch a string that has embedded nulls.
+ gdb_test "print nullst" "\"divide\\\\000et\\\\000impera\".*"
+ gdb_scm_test_silent_cmd "gu (define nullst (history-ref 0))" \
+ "inf: get nullst value from history"
+ gdb_test "gu (print (value->string nullst))" \
+ "divide" "Test string to first null"
+ gdb_scm_test_silent_cmd "gu (set! nullst (value->string nullst #:length 9))" \
+ "get string beyond null"
+ gdb_test "gu (print nullst)" \
+ "= divide\\\\000et"
+}
+
+proc test_strings {} {
+ gdb_test "gu (make-value \"test\")" "#<gdb:value \"test\">" "make string"
+
+ # Test string conversion errors.
+ set save_charset [get_target_charset]
+ gdb_test_no_output "set target-charset UTF-8"
+
+ gdb_test_no_output "gu (set-port-conversion-strategy! #f 'error)"
+ gdb_test "gu (print (value->string (make-value (string #\\x1234)) #:encoding \"ASCII\"))" \
+ "ERROR.*decoding-error.*" \
+ "value->string with default #:errors = 'error"
+
+ # There is no 'escape strategy for C->SCM string conversions, but it's
+ # still a legitimate value for %default-port-conversion-strategy.
+ # GDB handles this by, umm, substituting 'substitute.
+ # Use this case to also handle "#:errors #f" which explicitly says
+ # "use %default-port-conversion-strategy".
+ gdb_test_no_output "gu (set-port-conversion-strategy! #f 'escape)"
+ gdb_test "gu (print (value->string (make-value (string #\\x1234)) #:encoding \"ASCII\" #:errors #f))" \
+ "= \[?\]{3}" "value->string with default #:errors = 'escape"
+
+ # This is last in the default conversion tests so that
+ # %default-port-conversion-strategy ends up with the default value.
+ gdb_test_no_output "gu (set-port-conversion-strategy! #f 'substitute)"
+ gdb_test "gu (print (value->string (make-value (string #\\x1234)) #:encoding \"ASCII\"))" \
+ "= \[?\]{3}" "value->string with default #:errors = 'substitute"
+
+ gdb_test "gu (print (value->string (make-value (string #\\x1234)) #:encoding \"ASCII\" #:errors 'error))" \
+ "ERROR.*decoding-error.*" "value->string #:errors 'error"
+ gdb_test "gu (print (value->string (make-value (string #\\x1234)) #:encoding \"ASCII\" #:errors 'substitute))" \
+ "= \[?\]{3}" "value->string #:errors 'substitute"
+ gdb_test "gu (print (value->string (make-value \"abc\") #:errors \"foo\"))" \
+ "ERROR.*invalid error kind.*" "bad value for #:errors"
+
+ gdb_test_no_output "set target-charset $save_charset" \
+ "restore target-charset"
+}
+
+proc test_lazy_strings {} {
+ global hex
+
+ gdb_test "print sptr" "\"pointer\""
+ gdb_scm_test_silent_cmd "gu (define sptr (history-ref 0))" \
+ "lazy strings: get sptr value from history"
+
+ gdb_scm_test_silent_cmd "gu (define lstr (value->lazy-string sptr))" \
+ "Aquire lazy string"
+ gdb_test "gu (print (lazy-string-type lstr))" \
+ "= const char \*." "Test lazy-string type name equality"
+ gdb_test "gu (print (value-type sptr))" \
+ "= const char \*." "Test string type name equality"
+ gdb_test "print sn" "0x0"
+ gdb_scm_test_silent_cmd "gu (define snptr (history-ref 0))" \
+ "lazy strings: get snptr value from history"
+ gdb_test "gu (define snstr (value->lazy-string snptr #:length 5))" \
+ ".*cannot create a lazy string with address.*" "Test lazy string"
+ gdb_scm_test_silent_cmd "gu (define snstr (value->lazy-string snptr #:length 0))" \
+ "Successfully create a lazy string"
+ gdb_test "gu (print (lazy-string-length snstr))" \
+ "= 0" "Test lazy string length"
+ gdb_test "gu (print (lazy-string-address snstr))" \
+ "= 0" "Test lazy string address"
+}
+
+proc test_inferior_function_call {} {
+ global gdb_prompt hex decimal
+
+ # Correct inferior call without arguments.
+ gdb_test "p/x fp1" "= $hex.*"
+ gdb_scm_test_silent_cmd "gu (define fp1 (history-ref 0))" \
+ "get fp1 value from history"
+ gdb_scm_test_silent_cmd "gu (set! fp1 (value-dereference fp1))" \
+ "dereference fp1"
+ gdb_test "gu (print (value-call fp1 '()))" \
+ "= void"
+
+ # Correct inferior call with arguments.
+ gdb_test "p/x fp2" "= $hex.*"
+ gdb_scm_test_silent_cmd "gu (define fp2 (history-ref 0))" \
+ "get fp2 value from history"
+ gdb_scm_test_silent_cmd "gu (set! fp2 (value-dereference fp2))" \
+ "dereference fp2"
+ gdb_test "gu (print (value-call fp2 (list 10 20)))" \
+ "= 30"
+
+ # Incorrect to call an int value.
+ gdb_test "p i" "= $decimal.*"
+ gdb_scm_test_silent_cmd "gu (define i (history-ref 0))" \
+ "inf call: get i value from history"
+ gdb_test "gu (print (value-call i '()))" \
+ "ERROR: .*: Wrong type argument in position 1 \\(expecting function \\(value of TYPE_CODE_FUNC\\)\\): .*"
+
+ # Incorrect number of arguments.
+ gdb_test "p/x fp2" "= $hex.*"
+ gdb_scm_test_silent_cmd "gu (define fp3 (history-ref 0))" \
+ "get fp3 value from history"
+ gdb_scm_test_silent_cmd "gu (set! fp3 (value-dereference fp3))" \
+ "dereference fp3"
+ gdb_test "gu (print (value-call fp3 (list 10)))" \
+ "ERROR: Too few arguments in function call.*"
+}
+
+proc test_value_after_death {} {
+ # Construct a type while the inferior is still running.
+ gdb_scm_test_silent_cmd "gu (define ptrtype (lookup-type \"PTR\"))" \
+ "create PTR type"
+
+ # Kill the inferior and remove the symbols.
+ gdb_test "kill" "" "kill the inferior" \
+ "Kill the program being debugged. .y or n. $" \
+ "y"
+ gdb_test "file" "" "Discard the symbols" \
+ "Discard symbol table from.*y or n. $" \
+ "y"
+
+ # Now create a value using that type. Relies on arg0, created by
+ # test_value_in_inferior.
+ gdb_scm_test_silent_cmd "gu (define castval (value-cast arg0 (type-pointer ptrtype)))" \
+ "cast arg0 to PTR"
+
+ # Make sure the type is deleted.
+ gdb_scm_test_silent_cmd "gu (set! ptrtype #f)" \
+ "delete PTR type"
+
+ # Now see if the value's type is still valid.
+ gdb_test "gu (print (value-type castval))" \
+ "= PTR ." "print value's type"
+}
+
+# Regression test for invalid subscript operations. The bug was that
+# the type of the value was not being checked before allowing a
+# subscript operation to proceed.
+
+proc test_subscript_regression {exefile lang} {
+ # Start with a fresh gdb.
+ clean_restart ${exefile}
+
+ if ![gdb_guile_runto_main ] {
+ fail "Can't run to main"
+ return
+ }
+
+ if {$lang == "c++"} {
+ gdb_breakpoint [gdb_get_line_number "break to inspect pointer by reference"]
+ gdb_continue_to_breakpoint "break to inspect pointer by reference"
+
+ gdb_scm_test_silent_cmd "print rptr_int" \
+ "Obtain address"
+ gdb_scm_test_silent_cmd "gu (define rptr (history-ref 0))" \
+ "set rptr"
+ gdb_test "gu (print (value-subscript rptr 0))" \
+ "= 2" "Check pointer passed as reference"
+
+ # Just the most basic test of dynamic_cast -- it is checked in
+ # the C++ tests.
+ gdb_test "gu (print (value->bool (value-dynamic-cast (parse-and-eval \"base\") (type-pointer (lookup-type \"Derived\")))))" \
+ "= #t"
+
+ # Likewise.
+ gdb_test "gu (print (value-dynamic-type (parse-and-eval \"base\")))" \
+ "= Derived \[*\]"
+ # A static type case.
+ gdb_test "gu (print (value-dynamic-type (parse-and-eval \"5\")))" \
+ "= int"
+ }
+
+ gdb_breakpoint [gdb_get_line_number "break to inspect struct and union"]
+ gdb_continue_to_breakpoint "break to inspect struct and union"
+
+ gdb_scm_test_silent_cmd "gu (define intv (make-value 1))" \
+ "Create int value for subscript test"
+ gdb_scm_test_silent_cmd "gu (define stringv (make-value \"foo\"))" \
+ "Create string value for subscript test"
+
+ # Try to access an int with a subscript. This should fail.
+ gdb_test "gu (print intv)" \
+ "= 1" "Baseline print of an int Guile value"
+ gdb_test "gu (print (value-subscript intv 0))" \
+ "ERROR: Cannot subscript requested type.*" \
+ "Attempt to access an integer with a subscript"
+
+ # Try to access a string with a subscript. This should pass.
+ gdb_test "gu (print stringv)" \
+ "= \"foo\"" "Baseline print of a string Guile value"
+ gdb_test "gu (print (value-subscript stringv 0))" \
+ "= 102 'f'" "Attempt to access a string with a subscript"
+
+ # Try to access an int array via a pointer with a subscript.
+ # This should pass.
+ gdb_scm_test_silent_cmd "print p" "Build pointer to array"
+ gdb_scm_test_silent_cmd "gu (define pointer (history-ref 0))" "set pointer"
+ gdb_test "gu (print (value-subscript pointer 0))" \
+ "= 1" "Access array via pointer with int subscript"
+ gdb_test "gu (print (value-subscript pointer intv))" \
+ "= 2" "Access array via pointer with value subscript"
+
+ # Try to access a single dimension array with a subscript to the
+ # result. This should fail.
+ gdb_test "gu (print (value-subscript (value-subscript pointer intv) 0))" \
+ "ERROR: Cannot subscript requested type.*" \
+ "Attempt to access an integer with a subscript 2"
+
+ # Lastly, test subscript access to an array with multiple
+ # dimensions. This should pass.
+ gdb_scm_test_silent_cmd "print {\"fu \",\"foo\",\"bar\"}" "Build array"
+ gdb_scm_test_silent_cmd "gu (define marray (history-ref 0))" ""
+ gdb_test "gu (print (value-subscript (value-subscript marray 1) 2))" \
+ "o." "Test multiple subscript"
+}
+
+# A few tests of gdb:parse-and-eval.
+
+proc test_parse_and_eval {} {
+ gdb_test "gu (print (parse-and-eval \"23\"))" \
+ "= 23" "parse-and-eval constant test"
+ gdb_test "gu (print (parse-and-eval \"5 + 7\"))" \
+ "= 12" "parse-and-eval simple expression test"
+ gdb_test "gu (raw-print (parse-and-eval \"5 + 7\"))" \
+ "#<gdb:value 12>" "parse-and-eval type test"
+}
+
+# Test that values are hashable.
+# N.B.: While smobs are hashable, the hash is really non-existent,
+# they all get hashed to the same value. Guile may provide a hash function
+# for smobs in a future release. In the meantime one should use a custom
+# hash table that uses gdb:hash-gsmob.
+
+proc test_value_hash {} {
+ gdb_test_multiline "Simple Guile value dictionary" \
+ "guile" "" \
+ "(define one (make-value 1))" "" \
+ "(define two (make-value 2))" "" \
+ "(define three (make-value 3))" "" \
+ "(define vdict (make-hash-table 5))" "" \
+ "(hash-set! vdict one \"one str\")" "" \
+ "(hash-set! vdict two \"two str\")" "" \
+ "(hash-set! vdict three \"three str\")" "" \
+ "end"
+ gdb_test "gu (print (hash-ref vdict one))" \
+ "one str" "Test dictionary hash 1"
+ gdb_test "gu (print (hash-ref vdict two))" \
+ "two str" "Test dictionary hash 2"
+ gdb_test "gu (print (hash-ref vdict three))" \
+ "three str" "Test dictionary hash 3"
+}
+
+# Build C version of executable. C++ is built later.
+if { [build_inferior "${binfile}" "c"] < 0 } {
+ return
+}
+
+# Start with a fresh gdb.
+clean_restart ${binfile}
+
+# Skip all tests if Guile scripting is not enabled.
+if { [skip_guile_tests] } { continue }
+
+gdb_install_guile_utils
+gdb_install_guile_module
+
+test_parse_and_eval
+test_value_hash
+
+# The following tests require execution.
+
+if ![gdb_guile_runto_main] {
+ fail "Can't run to main"
+ return
+}
+
+test_value_in_inferior
+test_inferior_function_call
+test_strings
+test_lazy_strings
+test_value_after_death
+
+# Test either C or C++ values.
+
+test_subscript_regression "${binfile}" "c"
+
+if ![skip_cplus_tests] {
+ if { [build_inferior "${binfile}-cxx" "c++"] < 0 } {
+ return
+ }
+ with_test_prefix "c++" {
+ test_subscript_regression "${binfile}-cxx" "c++"
+ }
+}
generated by cgit v1.1 at 2025-01-02 12:39:43 +0000