gdb/testsuite/gdb.rust/simple.exp - binutils-gdb - Git at Google

 # Copyright (C) 2016-2022 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/>.

 # Test expression parsing and evaluation that requires Rust compiler.

 load_lib rust-support.exp
 if {[skip_rust_tests]} {
     continue
 }

 standard_testfile .rs
 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug rust}]} {
     return -1
 }

 set line [gdb_get_line_number "set breakpoint here"]
 if {![runto ${srcfile}:$line]} {
     untested "could not run to breakpoint"
     return -1
 }

 gdb_test "print a" " = \\(\\)"
 gdb_test "ptype a" " = \\(\\)"
 gdb_test "print sizeof(a)" " = 0"

 gdb_test "print b" " = \\\[\\\]"
 gdb_test "ptype b" " = \\\[i32; 0\\\]"
 gdb_test "print *(&b as *const \[i32; 0\])" " = \\\[\\\]"
 gdb_test "print *(&b as *const \[i32; 0_0\])" " = \\\[\\\]"

 gdb_test "print c" " = 99"
 gdb_test "ptype c" " = i32"
 gdb_test "print sizeof(c)" " = 4"

 gdb_test "print c = 87" " = \\(\\)"
 gdb_test "print c" " = 87" "print after assignment"
 gdb_test "print c += 3" " = \\(\\)"
 gdb_test "print c" " = 90" "print after plus assignment"
 gdb_test "print c -= 90" " = \\(\\)"
 gdb_test "print c" " = 0" "print after minus assignment"
 gdb_test "print *&c" " = 0"
 gdb_test "print *(&c as &i32)" " = 0"
 gdb_test "print *(&c as *const i32)" " = 0"
 gdb_test "print *(&c as *mut i32)" " = 0"
 gdb_test "ptype &c as *mut i32" "\\*mut i32"

 gdb_test "print/c f\[0\]" " = 104 'h'"

 gdb_test "print j" " = simple::Unit"
 gdb_test "ptype j" " = struct simple::Unit"
 gdb_test "print j2" " = simple::Unit"
 gdb_test "ptype j2" " = struct simple::Unit"
 gdb_test "print simple::Unit" " = simple::Unit"
 gdb_test "print simple::Unit{}" " = simple::Unit"
 gdb_test "print simple::Unit{23}" "'}', '\.\.', or identifier expected"

 gdb_test "print f" " = \"hi bob\""
 gdb_test "print fslice" " = \"bob\""
 gdb_test "print &f\[3..\]" " = \"bob\""

 gdb_test "print g" " = \\(\\*mut \\\[u8; 6\\\]\\) $hex b\"hi bob\""
 gdb_test "ptype g" " = \\*mut \\\[u8; 6\\\]"

 gdb_test "print v" " = simple::Something::Three"
 gdb_test_sequence "ptype v" "" {
     " = enum simple::Something \\{"
     "  One,"
     "  Two,"
     "  Three,"
     "\\}"
 }

 gdb_test "print w" " = \\\[1, 2, 3, 4\\\]"
 gdb_test "ptype w" " = \\\[i32; 4\\\]"
 gdb_test "print w\[2\]" " = 3"
 gdb_test "print w\[2\] @ 2" " = \\\[3, 4\\\]"
 gdb_test "print w_ptr\[2\]" " = 3"
 gdb_test "print fromslice" " = 3"
 gdb_test "print slice\[0\]" " = 3"
 gdb_test "print (slice as &\[i32\])\[0\]" " = 3"

 gdb_test "print slice as \[i32; 73.9\]" "integer expected"

 gdb_test_sequence "ptype slice" "" {
     " = struct &\\\[i32\\\] \\{"
     "  data_ptr: \\*mut i32,"
     "  length: usize,"
     "\\}"
 }
 gdb_test_sequence "ptype &slice\[..\]" "" {
     " = struct &\\\[i32\\\] \\{"
     "  data_ptr: \\*mut i32,"
     "  length: usize,"
     "\\}"
 }
 gdb_test_sequence "ptype &b\[..\]" "" {
     " = struct &\\\[\\*gdb\\*\\\] \\{"
     "  data_ptr: \\*mut i32,"
     "  length: usize,"
     "\\}"
 }

 gdb_test "print x" " = \\(23, 25\\.5\\)"
 gdb_test "ptype x" " = \\(i32, f64\\)"
 gdb_test "print x as (i32,f64)" " = \\(23, 25\\.5\\)"

 gdb_test "print y" " = simple::HiBob \\{field1: 7, field2: 8\\}"
 gdb_test_sequence "ptype y" "" {
     " = struct simple::HiBob \\{"
     "  field1: i32,"
     "  field2: u64,"
     "\\}"
 }
 gdb_test "print y.field2" " = 8"

 gdb_test "print z" " = simple::ByeBob \\(7, 8\\)"
 gdb_test_sequence "ptype z" "" {
     " = struct simple::ByeBob \\("
     "  i32,"
     "  u64,"
     "\\)"
 }
 gdb_test "print z.1" " = 8"

 # Some error checks.
 gdb_test "print z.1_0" \
     "'_' not allowed in integers in anonymous field references"
 gdb_test "print z.mut" "field name expected"

 gdb_test "print univariant" " = simple::Univariant::Foo{a: 1}"
 gdb_test "print univariant.a" " = 1"
 gdb_test "print univariant_anon" " = simple::UnivariantAnon::Foo\\(1\\)"
 gdb_test "print univariant_anon.0" " = 1"
 gdb_test "print univariant_anon.sss" \
     "Attempting to access named field sss of tuple variant simple::UnivariantAnon::Foo, which has only anonymous fields"

 gdb_test_sequence "ptype simple::Univariant" "" {
     "type = enum simple::Univariant \\{"
     "  Foo\\{a: u8\\},"
     "\\}"
 }

 gdb_test_sequence "ptype simple::UnivariantAnon" "" {
     "type = enum simple::UnivariantAnon \\{"
     "  Foo\\(u8\\),"
     "\\}"
 }

 gdb_test_sequence "ptype simple::ByeBob" "" {
     " = struct simple::ByeBob \\("
     "  i32,"
     "  u64,"
     "\\)"
 }
 gdb_test "print simple::ByeBob(0xff, 5)" \
     " = simple::ByeBob \\(255, 5\\)"
 gdb_test "print simple::ByeBob\{field1: 0xff, field2:5\}" \
     "Struct expression applied to non-struct type"

 gdb_test "print simple::HiBob(0xff, 5)" \
     "Type simple::HiBob is not a tuple struct"
 gdb_test "print sizeof(simple::HiBob)" " = \[0-9\]+"
 gdb_test "print simple::HiBob + 5" \
     "Attempt to use a type name as an expression"
 gdb_test "print nosuchsymbol" \
     "No symbol 'nosuchsymbol' in current context"

 gdb_test "print simple::HiBob{field1, field2}" \
     " = simple::HiBob \\{field1: 77, field2: 88\\}"

 gdb_test "print simple::HiBob{field1: 99, .. y}" \
     " = simple::HiBob \\{field1: 99, field2: 8\\}"

 gdb_test "print e" " = simple::MoreComplicated::Two\\(73\\)"
 gdb_test "print e2" \
     " = simple::MoreComplicated::Four\\{this: true, is: 8, a: 109 'm', struct_: 100, variant: 10\\}"
 gdb_test "print sizeof(e)" " = 24"
 gdb_test_sequence "ptype e" "" {
     " = enum simple::MoreComplicated \\{"
     "  One,"
     "  Two\\(i32\\),"
     "  Three\\(simple::HiBob\\),"
     "  Four\\{this: bool, is: u8, a: char, struct_: u64, variant: u32\\},"
     "\\}"
 }

 # Test a parser error.
 gdb_test "print sizeof e" "'\\(' expected"

 gdb_test "print e.0" " = 73"
 gdb_test "print e.1" \
     "Cannot access field 1 of variant simple::MoreComplicated::Two, there are only 1 fields"
 gdb_test "print e.foo" \
     "Attempting to access named field foo of tuple variant simple::MoreComplicated::Two, which has only anonymous fields"

 gdb_test "print e2.variant" " = 10"
 gdb_test "print e2.notexist" \
     "Could not find field notexist of struct variant simple::MoreComplicated::Four"
 gdb_test "print e2.0" \
     "Variant simple::MoreComplicated::Four is not a tuple variant"

 set pass_pattern " = simple::SpaceSaver::Nothing"
 set xfail_pattern " = simple::SpaceSaver::Thebox\\($decimal, 0x0\\)"
 gdb_test_multiple "print k" "" {
     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 	pass $gdb_test_name
     }
     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 	xfail $gdb_test_name
     }
 }
 gdb_test "print l" " = simple::SpaceSaver::Thebox\\(9, $hex\\)"
 gdb_test "print *l.1" " = 1729"

 gdb_test "print diff2(3, 7)" " = -4"
 gdb_test "print self::diff2(8, 9)" " = -1"
 gdb_test "print ::diff2(23, -23)" " = 46"

 gdb_test "ptype diff2" "fn \\(i32, i32\\) -> i32"
 gdb_test "ptype empty" "fn \\(\\)"

 gdb_test "print (diff2 as fn(i32, i32) -> i32)(19, -2)" " = 21"

 gdb_test "print diff2(73, 74 75" "',' or '\\\)' expected"
 gdb_test "print (diff2 as fn i32, i32) -> i32)(19, -2)" "'\\\(' expected"
 gdb_test "print (diff2 as fn (i32, i32) i32)(19, -2)" "'->' expected"

 gdb_test "print \"hello rust\"" " = \"hello rust.*\""
 gdb_test "print \"hello" "Unexpected EOF in string"
 gdb_test "print r##\"hello \" rust\"##" " = \"hello \\\\\" rust.*\""
 gdb_test "print r\"hello" "Unexpected EOF in string"
 gdb_test "print r###\"###hello\"" "Unexpected EOF in string"
 gdb_test "print r###\"###hello\"##" "Unexpected EOF in string"
 gdb_test "print r###\"hello###" "Unexpected EOF in string"

 gdb_test "print 0..5" " = .*::ops::Range.* \\{start: 0, end: 5\\}"
 gdb_test "print 0..=5" " = .*::ops::RangeInclusive.* \\{start: 0, end: 5\\}"
 gdb_test "print ..5" " = .*::ops::RangeTo.* \\{end: 5\\}"
 gdb_test "print ..=5" " = .*::ops::RangeToInclusive.* \\{end: 5\\}"
 gdb_test "print 5.." " = .*::ops::RangeFrom.* \\{start: 5\\}"
 gdb_test "print .." " = .*::ops::RangeFull"

 set pass_pattern \
     " = core::option::Option<\[a-z\]+::string::String>::Some\\(\[a-z\]+::string::String .*"
 set xfail_pattern \
     "( = <error reading variable>|That operation is not available on .*)"
 gdb_test_multiple "print str_some" "" {
     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 	pass $gdb_test_name
     }
     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 	xfail $gdb_test_name
     }
 }

 set pass_pattern " = core::option::Option<\[a-z\]+::string::String>::None"
 gdb_test_multiple "print str_none" "" {
     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 	pass $gdb_test_name
     }
     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 	xfail $gdb_test_name
     }
 }

 gdb_test "print int_some" " = core::option::Option<u8>::Some\\(1\\)"
 gdb_test "print int_none" " = core::option::Option<u8>::None"
 # The result expressions are a bit lax here, to handle the fact that
 # the output varies between Rust versions.  Mostly we just want to
 # check for the presence "Option", "Box", "u8", and either "Some" or
 # "None".
 gdb_test "print box_some" \
     " = core::option::Option<\[a-z:\]*Box<u8.*>>::Some\\(.*\\)"
 gdb_test "print box_none" \
     " = core::option::Option<\[a-z:\]*Box<u8.*>>::None"

 set pass_pattern \
     " = simple::NonZeroOptimized::Value\\(\[a-z\]+::string::String .*"
 gdb_test_multiple "print custom_some" "" {
     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 	pass $gdb_test_name
     }
     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 	xfail $gdb_test_name
     }
 }

 set pass_pattern " = simple::NonZeroOptimized::Empty"
 gdb_test_multiple "print custom_none" "" {
     -re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
 	pass $gdb_test_name
     }
     -re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
 	xfail $gdb_test_name
     }
 }

 gdb_test "print st" \
     " = simple::StringAtOffset {field1: \"hello\", field2: 1, field3: \"world\"}"

 proc test_one_slice {svar length base range} {
     with_test_prefix $range {
 	global hex

 	set result " = &\\\[.*\\\] \\{data_ptr: $hex, length: $length\\}"

 	gdb_test "print $svar" $result
 	gdb_test "print &${base}\[${range}\]" $result
     }
 }

 test_one_slice slice 1 w 2..3
 test_one_slice slice 1 w 2..=2
 test_one_slice slice2 1 slice 0..1
 test_one_slice slice2 1 slice 0..=0

 test_one_slice all1 4 w ..
 test_one_slice all2 1 slice ..

 test_one_slice from1 3 w 1..
 test_one_slice from2 0 slice 1..

 test_one_slice to1 3 w ..3
 test_one_slice to1 3 w ..=2
 test_one_slice to2 1 slice ..1
 test_one_slice to2 1 slice ..=0

 gdb_test "print w\[2..3\]" "Can't take slice of array without '&'"


 gdb_test_sequence "complete print y.f" "" \
     {"print y.field1" "print y.field2"}
 gdb_test_sequence "complete print y." "" \
     {"print y.field1" "print y.field2"}

 # Unimplemented, but we can at least test the parser productions.
 gdb_test "print (1,2,3)" "Tuple expressions not supported yet"
 gdb_test "print (1,)" "Tuple expressions not supported yet"
 gdb_test "print (1)" " = 1"

 # Test a syntax error in tuple expressions.
 gdb_test "print (1,2,," "unexpected token"
 gdb_test "print (1,2 8" "',' or '\\\)' expected"

 gdb_test "print 23..97.0" "Range expression with different types"

 gdb_test "print (*parametrized.next.val)" \
     " = simple::ParametrizedStruct<i32> {next: simple::ParametrizedEnum<\[a-z:\]*Box<simple::ParametrizedStruct<i32>.*>>::Empty, value: 1}"
 gdb_test "print parametrized.next.val" \
     " = \\(\\*mut simple::ParametrizedStruct<i32>\\) $hex"
 gdb_test "print parametrized" \
     " = simple::ParametrizedStruct<i32> \\{next: simple::ParametrizedEnum<\[a-z:\]*Box<simple::ParametrizedStruct<i32>.*>>::Val\\{val: $hex\\}, value: 0\\}"

 gdb_test_sequence "ptype/o SimpleLayout" "" {
     "/\\* offset      |    size \\*/  type = struct simple::SimpleLayout {"
     "/\\*      0      |       2 \\*/    f1: u16,"
     "/\\*      2      |       2 \\*/    f2: u16,"
     ""
     "                               /\\* total size \\(bytes\\):    4 \\*/"
     "                             }"
 }

 gdb_test "print nonzero_offset" " = simple::EnumWithNonzeroOffset {a: core::option::Option<u8>::Some\\(1\\), b: core::option::Option<u8>::None}"

 # PR rust/23626 - this used to crash.  Note that the results are
 # fairly lax because most existing versions of Rust (those before the
 # DW_TAG_variant patches) do not emit what gdb wants here; and there
 # was little point fixing gdb to cope with these cases as the fixed
 # compilers will be available soon
 gdb_test "print empty_enum_value" \
     " = simple::EmptyEnum.*"
 gdb_test "ptype empty_enum_value" "simple::EmptyEnum.*"
 # Just make sure these don't crash, for the same reason.
 gdb_test "print empty_enum_value.0" ""
 gdb_test "print empty_enum_value.something" ""

 load_lib gdb-python.exp
 if {[skip_python_tests]} {
     continue
 }

 gdb_test "python print(gdb.lookup_type('simple::HiBob'))" "simple::HiBob"

 gdb_test_no_output "python e = gdb.parse_and_eval('e')" \
     "get value of e for python"
 gdb_test "python print(len(e.type.fields()))" "2"
 gdb_test "python print(e.type.fields()\[0\].artificial)" "True"
 gdb_test "python print(e.type.fields()\[1\].name)" "Two"

 gdb_test "python print(e.type.dynamic)" "False"

 # Before LLVM 8, the rust compiler would emit two types named
 # "simple::MoreComplicated" -- the C-like "underlying" enum type and
 # the Rust enum.  lookup_type seems to get the former, which isn't
 # very useful.  With later versions of LLVM, this test works
 # correctly.
 set v [split [rust_llvm_version] .]
 if {[lindex $v 0] >= 8} {
     gdb_test "python print(gdb.lookup_type('simple::MoreComplicated').dynamic)" \
 	"True"
 }
	# Copyright (C) 2016-2022 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/>.

	# Test expression parsing and evaluation that requires Rust compiler.

	load_lib rust-support.exp
	if {[skip_rust_tests]} {
	continue
	}

	standard_testfile .rs
	if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug rust}]} {
	return -1
	}

	set line [gdb_get_line_number "set breakpoint here"]
	if {![runto ${srcfile}:$line]} {
	untested "could not run to breakpoint"
	return -1
	}

	gdb_test "print a" " = \\(\\)"
	gdb_test "ptype a" " = \\(\\)"
	gdb_test "print sizeof(a)" " = 0"

	gdb_test "print b" " = \\\[\\\]"
	gdb_test "ptype b" " = \\\[i32; 0\\\]"
	gdb_test "print (&b as const \[i32; 0\])" " = \\\[\\\]"
	gdb_test "print (&b as const \[i32; 0_0\])" " = \\\[\\\]"

	gdb_test "print c" " = 99"
	gdb_test "ptype c" " = i32"
	gdb_test "print sizeof(c)" " = 4"

	gdb_test "print c = 87" " = \\(\\)"
	gdb_test "print c" " = 87" "print after assignment"
	gdb_test "print c += 3" " = \\(\\)"
	gdb_test "print c" " = 90" "print after plus assignment"
	gdb_test "print c -= 90" " = \\(\\)"
	gdb_test "print c" " = 0" "print after minus assignment"
	gdb_test "print *&c" " = 0"
	gdb_test "print *(&c as &i32)" " = 0"
	gdb_test "print (&c as const i32)" " = 0"
	gdb_test "print (&c as mut i32)" " = 0"
	gdb_test "ptype &c as mut i32" "\\mut i32"

	gdb_test "print/c f\[0\]" " = 104 'h'"

	gdb_test "print j" " = simple::Unit"
	gdb_test "ptype j" " = struct simple::Unit"
	gdb_test "print j2" " = simple::Unit"
	gdb_test "ptype j2" " = struct simple::Unit"
	gdb_test "print simple::Unit" " = simple::Unit"
	gdb_test "print simple::Unit{}" " = simple::Unit"
	gdb_test "print simple::Unit{23}" "'}', '\.\.', or identifier expected"

	gdb_test "print f" " = \"hi bob\""
	gdb_test "print fslice" " = \"bob\""
	gdb_test "print &f\[3..\]" " = \"bob\""

	gdb_test "print g" " = \\(\\*mut \\\[u8; 6\\\]\\) $hex b\"hi bob\""
	gdb_test "ptype g" " = \\*mut \\\[u8; 6\\\]"

	gdb_test "print v" " = simple::Something::Three"
	gdb_test_sequence "ptype v" "" {
	" = enum simple::Something \\{"
	" One,"
	" Two,"
	" Three,"
	"\\}"
	}

	gdb_test "print w" " = \\\[1, 2, 3, 4\\\]"
	gdb_test "ptype w" " = \\\[i32; 4\\\]"
	gdb_test "print w\[2\]" " = 3"
	gdb_test "print w\[2\] @ 2" " = \\\[3, 4\\\]"
	gdb_test "print w_ptr\[2\]" " = 3"
	gdb_test "print fromslice" " = 3"
	gdb_test "print slice\[0\]" " = 3"
	gdb_test "print (slice as &\[i32\])\[0\]" " = 3"

	gdb_test "print slice as \[i32; 73.9\]" "integer expected"

	gdb_test_sequence "ptype slice" "" {
	" = struct &\\\[i32\\\] \\{"
	" data_ptr: \\*mut i32,"
	" length: usize,"
	"\\}"
	}
	gdb_test_sequence "ptype &slice\[..\]" "" {
	" = struct &\\\[i32\\\] \\{"
	" data_ptr: \\*mut i32,"
	" length: usize,"
	"\\}"
	}
	gdb_test_sequence "ptype &b\[..\]" "" {
	" = struct &\\\[\\gdb\\\\\] \\{"
	" data_ptr: \\*mut i32,"
	" length: usize,"
	"\\}"
	}

	gdb_test "print x" " = \\(23, 25\\.5\\)"
	gdb_test "ptype x" " = \\(i32, f64\\)"
	gdb_test "print x as (i32,f64)" " = \\(23, 25\\.5\\)"

	gdb_test "print y" " = simple::HiBob \\{field1: 7, field2: 8\\}"
	gdb_test_sequence "ptype y" "" {
	" = struct simple::HiBob \\{"
	" field1: i32,"
	" field2: u64,"
	"\\}"
	}
	gdb_test "print y.field2" " = 8"

	gdb_test "print z" " = simple::ByeBob \\(7, 8\\)"
	gdb_test_sequence "ptype z" "" {
	" = struct simple::ByeBob \\("
	" i32,"
	" u64,"
	"\\)"
	}
	gdb_test "print z.1" " = 8"

	# Some error checks.
	gdb_test "print z.1_0" \
	"'_' not allowed in integers in anonymous field references"
	gdb_test "print z.mut" "field name expected"

	gdb_test "print univariant" " = simple::Univariant::Foo{a: 1}"
	gdb_test "print univariant.a" " = 1"
	gdb_test "print univariant_anon" " = simple::UnivariantAnon::Foo\\(1\\)"
	gdb_test "print univariant_anon.0" " = 1"
	gdb_test "print univariant_anon.sss" \
	"Attempting to access named field sss of tuple variant simple::UnivariantAnon::Foo, which has only anonymous fields"

	gdb_test_sequence "ptype simple::Univariant" "" {
	"type = enum simple::Univariant \\{"
	" Foo\\{a: u8\\},"
	"\\}"
	}

	gdb_test_sequence "ptype simple::UnivariantAnon" "" {
	"type = enum simple::UnivariantAnon \\{"
	" Foo\\(u8\\),"
	"\\}"
	}

	gdb_test_sequence "ptype simple::ByeBob" "" {
	" = struct simple::ByeBob \\("
	" i32,"
	" u64,"
	"\\)"
	}
	gdb_test "print simple::ByeBob(0xff, 5)" \
	" = simple::ByeBob \\(255, 5\\)"
	gdb_test "print simple::ByeBob\{field1: 0xff, field2:5\}" \
	"Struct expression applied to non-struct type"

	gdb_test "print simple::HiBob(0xff, 5)" \
	"Type simple::HiBob is not a tuple struct"
	gdb_test "print sizeof(simple::HiBob)" " = \[0-9\]+"
	gdb_test "print simple::HiBob + 5" \
	"Attempt to use a type name as an expression"
	gdb_test "print nosuchsymbol" \
	"No symbol 'nosuchsymbol' in current context"

	gdb_test "print simple::HiBob{field1, field2}" \
	" = simple::HiBob \\{field1: 77, field2: 88\\}"

	gdb_test "print simple::HiBob{field1: 99, .. y}" \
	" = simple::HiBob \\{field1: 99, field2: 8\\}"

	gdb_test "print e" " = simple::MoreComplicated::Two\\(73\\)"
	gdb_test "print e2" \
	" = simple::MoreComplicated::Four\\{this: true, is: 8, a: 109 'm', struct_: 100, variant: 10\\}"
	gdb_test "print sizeof(e)" " = 24"
	gdb_test_sequence "ptype e" "" {
	" = enum simple::MoreComplicated \\{"
	" One,"
	" Two\\(i32\\),"
	" Three\\(simple::HiBob\\),"
	" Four\\{this: bool, is: u8, a: char, struct_: u64, variant: u32\\},"
	"\\}"
	}

	# Test a parser error.
	gdb_test "print sizeof e" "'\\(' expected"

	gdb_test "print e.0" " = 73"
	gdb_test "print e.1" \
	"Cannot access field 1 of variant simple::MoreComplicated::Two, there are only 1 fields"
	gdb_test "print e.foo" \
	"Attempting to access named field foo of tuple variant simple::MoreComplicated::Two, which has only anonymous fields"

	gdb_test "print e2.variant" " = 10"
	gdb_test "print e2.notexist" \
	"Could not find field notexist of struct variant simple::MoreComplicated::Four"
	gdb_test "print e2.0" \
	"Variant simple::MoreComplicated::Four is not a tuple variant"

	set pass_pattern " = simple::SpaceSaver::Nothing"
	set xfail_pattern " = simple::SpaceSaver::Thebox\\($decimal, 0x0\\)"
	gdb_test_multiple "print k" "" {
	-re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
	pass $gdb_test_name
	}
	-re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
	xfail $gdb_test_name
	}
	}
	gdb_test "print l" " = simple::SpaceSaver::Thebox\\(9, $hex\\)"
	gdb_test "print *l.1" " = 1729"

	gdb_test "print diff2(3, 7)" " = -4"
	gdb_test "print self::diff2(8, 9)" " = -1"
	gdb_test "print ::diff2(23, -23)" " = 46"

	gdb_test "ptype diff2" "fn \\(i32, i32\\) -> i32"
	gdb_test "ptype empty" "fn \\(\\)"

	gdb_test "print (diff2 as fn(i32, i32) -> i32)(19, -2)" " = 21"

	gdb_test "print diff2(73, 74 75" "',' or '\\\)' expected"
	gdb_test "print (diff2 as fn i32, i32) -> i32)(19, -2)" "'\\\(' expected"
	gdb_test "print (diff2 as fn (i32, i32) i32)(19, -2)" "'->' expected"

	gdb_test "print \"hello rust\"" " = \"hello rust.*\""
	gdb_test "print \"hello" "Unexpected EOF in string"
	gdb_test "print r##\"hello \" rust\"##" " = \"hello \\\\\" rust.*\""
	gdb_test "print r\"hello" "Unexpected EOF in string"
	gdb_test "print r###\"###hello\"" "Unexpected EOF in string"
	gdb_test "print r###\"###hello\"##" "Unexpected EOF in string"
	gdb_test "print r###\"hello###" "Unexpected EOF in string"

	gdb_test "print 0..5" " = .::ops::Range. \\{start: 0, end: 5\\}"
	gdb_test "print 0..=5" " = .::ops::RangeInclusive. \\{start: 0, end: 5\\}"
	gdb_test "print ..5" " = .::ops::RangeTo. \\{end: 5\\}"
	gdb_test "print ..=5" " = .::ops::RangeToInclusive. \\{end: 5\\}"
	gdb_test "print 5.." " = .::ops::RangeFrom. \\{start: 5\\}"
	gdb_test "print .." " = .*::ops::RangeFull"

	set pass_pattern \
	" = core::option::Option<\[a-z\]+::string::String>::Some\\(\[a-z\]+::string::String .*"
	set xfail_pattern \
	"( = <error reading variable>\|That operation is not available on .*)"
	gdb_test_multiple "print str_some" "" {
	-re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
	pass $gdb_test_name
	}
	-re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
	xfail $gdb_test_name
	}
	}

	set pass_pattern " = core::option::Option<\[a-z\]+::string::String>::None"
	gdb_test_multiple "print str_none" "" {
	-re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
	pass $gdb_test_name
	}
	-re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
	xfail $gdb_test_name
	}
	}

	gdb_test "print int_some" " = core::option::Option<u8>::Some\\(1\\)"
	gdb_test "print int_none" " = core::option::Option<u8>::None"
	# The result expressions are a bit lax here, to handle the fact that
	# the output varies between Rust versions. Mostly we just want to
	# check for the presence "Option", "Box", "u8", and either "Some" or
	# "None".
	gdb_test "print box_some" \
	" = core::option::Option<\[a-z:\]Box<u8.>>::Some\\(.*\\)"
	gdb_test "print box_none" \
	" = core::option::Option<\[a-z:\]Box<u8.>>::None"

	set pass_pattern \
	" = simple::NonZeroOptimized::Value\\(\[a-z\]+::string::String .*"
	gdb_test_multiple "print custom_some" "" {
	-re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
	pass $gdb_test_name
	}
	-re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
	xfail $gdb_test_name
	}
	}

	set pass_pattern " = simple::NonZeroOptimized::Empty"
	gdb_test_multiple "print custom_none" "" {
	-re "\[\r\n\]*(?:$pass_pattern)\[\r\n\]+$gdb_prompt $" {
	pass $gdb_test_name
	}
	-re "\[\r\n\]*(?:$xfail_pattern)\[\r\n\]+$gdb_prompt $" {
	xfail $gdb_test_name
	}
	}

	gdb_test "print st" \
	" = simple::StringAtOffset {field1: \"hello\", field2: 1, field3: \"world\"}"

	proc test_one_slice {svar length base range} {
	with_test_prefix $range {
	global hex

	set result " = &\\\[.*\\\] \\{data_ptr: $hex, length: $length\\}"

	gdb_test "print $svar" $result
	gdb_test "print &${base}\[${range}\]" $result
	}
	}

	test_one_slice slice 1 w 2..3
	test_one_slice slice 1 w 2..=2
	test_one_slice slice2 1 slice 0..1
	test_one_slice slice2 1 slice 0..=0

	test_one_slice all1 4 w ..
	test_one_slice all2 1 slice ..

	test_one_slice from1 3 w 1..
	test_one_slice from2 0 slice 1..

	test_one_slice to1 3 w ..3
	test_one_slice to1 3 w ..=2
	test_one_slice to2 1 slice ..1
	test_one_slice to2 1 slice ..=0

	gdb_test "print w\[2..3\]" "Can't take slice of array without '&'"


	gdb_test_sequence "complete print y.f" "" \
	{"print y.field1" "print y.field2"}
	gdb_test_sequence "complete print y." "" \
	{"print y.field1" "print y.field2"}

	# Unimplemented, but we can at least test the parser productions.
	gdb_test "print (1,2,3)" "Tuple expressions not supported yet"
	gdb_test "print (1,)" "Tuple expressions not supported yet"
	gdb_test "print (1)" " = 1"

	# Test a syntax error in tuple expressions.
	gdb_test "print (1,2,," "unexpected token"
	gdb_test "print (1,2 8" "',' or '\\\)' expected"

	gdb_test "print 23..97.0" "Range expression with different types"

	gdb_test "print (*parametrized.next.val)" \
	" = simple::ParametrizedStruct<i32> {next: simple::ParametrizedEnum<\[a-z:\]Box<simple::ParametrizedStruct<i32>.>>::Empty, value: 1}"
	gdb_test "print parametrized.next.val" \
	" = \\(\\*mut simple::ParametrizedStruct<i32>\\) $hex"
	gdb_test "print parametrized" \
	" = simple::ParametrizedStruct<i32> \\{next: simple::ParametrizedEnum<\[a-z:\]Box<simple::ParametrizedStruct<i32>.>>::Val\\{val: $hex\\}, value: 0\\}"

	gdb_test_sequence "ptype/o SimpleLayout" "" {
	"/\\* offset \| size \\*/ type = struct simple::SimpleLayout {"
	"/\\* 0 \| 2 \\*/ f1: u16,"
	"/\\* 2 \| 2 \\*/ f2: u16,"
	""
	" /\\* total size \\(bytes\\): 4 \\*/"
	" }"
	}

	gdb_test "print nonzero_offset" " = simple::EnumWithNonzeroOffset {a: core::option::Option<u8>::Some\\(1\\), b: core::option::Option<u8>::None}"

	# PR rust/23626 - this used to crash. Note that the results are
	# fairly lax because most existing versions of Rust (those before the
	# DW_TAG_variant patches) do not emit what gdb wants here; and there
	# was little point fixing gdb to cope with these cases as the fixed
	# compilers will be available soon
	gdb_test "print empty_enum_value" \
	" = simple::EmptyEnum.*"
	gdb_test "ptype empty_enum_value" "simple::EmptyEnum.*"
	# Just make sure these don't crash, for the same reason.
	gdb_test "print empty_enum_value.0" ""
	gdb_test "print empty_enum_value.something" ""

	load_lib gdb-python.exp
	if {[skip_python_tests]} {
	continue
	}

	gdb_test "python print(gdb.lookup_type('simple::HiBob'))" "simple::HiBob"

	gdb_test_no_output "python e = gdb.parse_and_eval('e')" \
	"get value of e for python"
	gdb_test "python print(len(e.type.fields()))" "2"
	gdb_test "python print(e.type.fields()\[0\].artificial)" "True"
	gdb_test "python print(e.type.fields()\[1\].name)" "Two"

	gdb_test "python print(e.type.dynamic)" "False"

	# Before LLVM 8, the rust compiler would emit two types named
	# "simple::MoreComplicated" -- the C-like "underlying" enum type and
	# the Rust enum. lookup_type seems to get the former, which isn't
	# very useful. With later versions of LLVM, this test works
	# correctly.
	set v [split [rust_llvm_version] .]
	if {[lindex $v 0] >= 8} {
	gdb_test "python print(gdb.lookup_type('simple::MoreComplicated').dynamic)" \
	"True"
	}