mirror of
https://sourceware.org/git/binutils-gdb.git
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c9317f214b
A Rust enum is, essentially, a discriminated union. Currently the Rust language support handles Rust enums locally, in rust-lang.c. However, because I am changing the Rust compiler to use DW_TAG_variant* to represent enums, it seemed better to have a single internal representation for Rust enums in gdb. This patch implements this idea by moving the current Rust enum handling code to dwarf2read. This allows the simplification of some parts of rust-lang.c as well. 2018-02-26 Tom Tromey <tom@tromey.com> * rust-lang.h (rust_last_path_segment): Declare. * rust-lang.c (rust_last_path_segment): Now public. Change contract. (struct disr_info): Remove. (RUST_ENUM_PREFIX, RUST_ENCODED_ENUM_REAL) (RUST_ENCODED_ENUM_HIDDEN, rust_union_is_untagged) (rust_get_disr_info, rust_tuple_variant_type_p): Remove. (rust_enum_p, rust_enum_variant): New function. (rust_underscore_fields): Remove "offset" parameter. (rust_print_enum): New function. (rust_val_print) <TYPE_CODE_UNION>: Remove enum code. <TYPE_CODE_STRUCT>: Call rust_print_enum when appropriate. (rust_print_struct_def): Add "for_rust_enum" parameter. Handle enums. (rust_internal_print_type): New function, from rust_print_type. Remove enum code. (rust_print_type): Call rust_internal_print_type. (rust_evaluate_subexp) <STRUCTOP_ANONYMOUS, STRUCTOP_STRUCT>: Update enum handling. * dwarf2read.c (struct dwarf2_cu) <rust_unions>: New field. (rust_fully_qualify, alloc_discriminant_info, quirk_rust_enum) (rust_union_quirks): New functions. (process_full_comp_unit, process_full_type_unit): Call rust_union_quirks. (process_structure_scope): Update rust_unions if necessary. 2018-02-26 Tom Tromey <tom@tromey.com> * gdb.rust/simple.exp: Accept more possible results in enum test.
281 lines
9.0 KiB
Plaintext
281 lines
9.0 KiB
Plaintext
# Copyright (C) 2016-2018 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# Test expression parsing and evaluation that requires Rust compiler.
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load_lib rust-support.exp
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if {[skip_rust_tests]} {
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continue
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}
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standard_testfile .rs
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if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug rust}]} {
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return -1
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}
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set line [gdb_get_line_number "set breakpoint here"]
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if {![runto ${srcfile}:$line]} {
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untested "could not run to breakpoint"
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return -1
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}
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gdb_test "print a" " = \\(\\)"
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gdb_test "ptype a" " = \\(\\)"
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gdb_test "print sizeof(a)" " = 0"
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gdb_test "print b" " = \\\[\\\]"
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gdb_test "ptype b" " = \\\[i32; 0\\\]"
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gdb_test "print *(&b as *const \[i32; 0\])" " = \\\[\\\]"
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gdb_test "print *(&b as *const \[i32; 0_0\])" " = \\\[\\\]"
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gdb_test "print c" " = 99"
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gdb_test "ptype c" " = i32"
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gdb_test "print sizeof(c)" " = 4"
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gdb_test "print c = 87" " = \\(\\)"
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gdb_test "print c" " = 87"
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gdb_test "print c += 3" " = \\(\\)"
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gdb_test "print c" " = 90"
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gdb_test "print c -= 90" " = \\(\\)"
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gdb_test "print c" " = 0"
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gdb_test "print *&c" " = 0"
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gdb_test "print *(&c as &i32)" " = 0"
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gdb_test "print *(&c as *const i32)" " = 0"
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gdb_test "print *(&c as *mut i32)" " = 0"
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gdb_test "print/c f\[0\]" " = 104 'h'"
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gdb_test "print j" " = simple::Unit"
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gdb_test "ptype j" " = struct simple::Unit"
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gdb_test "print j2" " = simple::Unit"
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gdb_test "ptype j2" " = struct simple::Unit"
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gdb_test "print simple::Unit" " = simple::Unit"
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gdb_test "print simple::Unit{}" " = simple::Unit"
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gdb_test "print f" " = \"hi bob\""
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gdb_test "print fslice" " = \"bob\""
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gdb_test "print &f\[3..\]" " = \"bob\""
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gdb_test "print g" " = \\(u8 \\(\\*\\)\\\[6\\\]\\) $hex b\"hi bob\""
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gdb_test "ptype g" " = u8 \\(\\*\\)\\\[6\\\]"
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gdb_test "print v" " = simple::Something::Three"
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gdb_test_sequence "ptype v" "" {
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" = enum simple::Something \\{"
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" One,"
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" Two,"
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" Three,"
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"\\}"
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}
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gdb_test "print w" " = \\\[1, 2, 3, 4\\\]"
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gdb_test "ptype w" " = \\\[i32; 4\\\]"
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gdb_test "print w\[2\]" " = 3"
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gdb_test "print w\[2\] @ 2" " = \\\[3, 4\\\]"
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gdb_test "print w_ptr\[2\]" " = 3"
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gdb_test "print fromslice" " = 3"
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gdb_test "print slice\[0\]" " = 3"
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gdb_test "print slice as &\[i32\]\[0\]" " = 3"
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gdb_test_sequence "ptype slice" "" {
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" = struct &\\\[i32\\\] \\{"
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" data_ptr: i32 \\*,"
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" length: usize,"
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"\\}"
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}
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gdb_test_sequence "ptype &slice\[..\]" "" {
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" = struct &\\\[i32\\\] \\{"
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" data_ptr: i32 \\*,"
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" length: usize,"
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"\\}"
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}
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gdb_test_sequence "ptype &b\[..\]" "" {
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" = struct &\\\[\\*gdb\\*\\\] \\{"
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" data_ptr: i32 \\*,"
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" length: usize,"
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"\\}"
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}
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gdb_test "print x" " = \\(23, 25\\.5\\)"
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gdb_test "ptype x" " = \\(i32, f64\\)"
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gdb_test "print x as (i32,f64)" " = \\(23, 25\\.5\\)"
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gdb_test "print y" " = simple::HiBob \\{field1: 7, field2: 8\\}"
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gdb_test_sequence "ptype y" "" {
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" = struct simple::HiBob \\{"
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" field1: i32,"
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" field2: u64,"
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"\\}"
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}
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gdb_test "print y.field2" " = 8"
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gdb_test "print z" " = simple::ByeBob \\(7, 8\\)"
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gdb_test_sequence "ptype z" "" {
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" = struct simple::ByeBob \\("
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" i32,"
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" u64,"
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"\\)"
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}
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gdb_test "print z.1" " = 8"
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gdb_test "print univariant" " = simple::Univariant::Foo{a: 1}"
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gdb_test "print univariant.a" " = 1"
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gdb_test "print univariant_anon" " = simple::UnivariantAnon::Foo\\(1\\)"
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gdb_test "print univariant_anon.0" " = 1"
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gdb_test_sequence "ptype simple::Univariant" "" {
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"type = enum simple::Univariant \\{"
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" Foo\\{a: u8\\},"
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"\\}"
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}
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gdb_test_sequence "ptype simple::UnivariantAnon" "" {
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"type = enum simple::UnivariantAnon \\{"
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" Foo\\(u8\\),"
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"\\}"
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}
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gdb_test_sequence "ptype simple::ByeBob" "" {
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" = struct simple::ByeBob \\("
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" i32,"
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" u64,"
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"\\)"
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}
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gdb_test "print simple::ByeBob(0xff, 5)" \
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" = simple::ByeBob \\(255, 5\\)"
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gdb_test "print simple::ByeBob\{field1: 0xff, field2:5\}" \
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"Struct expression applied to non-struct type"
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gdb_test "print simple::HiBob(0xff, 5)" \
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"Type simple::HiBob is not a tuple struct"
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gdb_test "print sizeof(simple::HiBob)" " = \[0-9\]+"
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gdb_test "print simple::HiBob + 5" \
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"Found type 'simple::HiBob', which can't be evaluated in this context"
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gdb_test "print nosuchsymbol" \
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"No symbol 'nosuchsymbol' in current context"
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gdb_test "print e" " = simple::MoreComplicated::Two\\(73\\)"
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gdb_test "print e2" \
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" = simple::MoreComplicated::Four\\{this: true, is: 8, a: 109 'm', struct_: 100, variant: 10\\}"
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gdb_test "print sizeof(e)" " = 24"
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gdb_test_sequence "ptype e" "" {
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" = enum simple::MoreComplicated \\{"
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" One,"
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" Two\\(i32\\),"
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" Three\\(simple::HiBob\\),"
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" Four\\{this: bool, is: u8, a: char, struct_: u64, variant: u32\\},"
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"\\}"
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}
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gdb_test "print e.0" " = 73"
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gdb_test "print e.1" \
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"Cannot access field 1 of variant simple::MoreComplicated::Two, there are only 1 fields"
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gdb_test "print e.foo" \
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"Attempting to access named field foo of tuple variant simple::MoreComplicated::Two, which has only anonymous fields"
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gdb_test "print e2.variant" " = 10"
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gdb_test "print e2.notexist" \
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"Could not find field notexist of struct variant simple::MoreComplicated::Four"
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gdb_test "print e2.0" \
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"Variant simple::MoreComplicated::Four is not a tuple variant"
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gdb_test "print k" " = simple::SpaceSaver::Nothing"
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gdb_test "print l" " = simple::SpaceSaver::Thebox\\(9, $hex\\)"
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gdb_test "print *l.1" " = 1729"
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gdb_test "print diff2(3, 7)" " = -4"
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gdb_test "print self::diff2(8, 9)" " = -1"
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gdb_test "print ::diff2(23, -23)" " = 46"
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gdb_test "ptype diff2" "fn \\(i32, i32\\) -> i32"
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gdb_test "ptype empty" "fn \\(\\)"
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gdb_test "print (diff2 as fn(i32, i32) -> i32)(19, -2)" " = 21"
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gdb_test "print \"hello rust\"" " = \"hello rust.*\""
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gdb_test "print \"hello" "Unexpected EOF in string"
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gdb_test "print r##\"hello \" rust\"##" " = \"hello \\\\\" rust.*\""
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gdb_test "print r\"hello" "Unexpected EOF in string"
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gdb_test "print r###\"###hello\"" "Unexpected EOF in string"
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gdb_test "print r###\"###hello\"##" "Unexpected EOF in string"
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gdb_test "print r###\"hello###" "Unexpected EOF in string"
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gdb_test "print 0..5" " = .*::ops::Range.* \\{start: 0, end: 5\\}"
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gdb_test "print ..5" " = .*::ops::RangeTo.* \\{end: 5\\}"
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gdb_test "print 5.." " = .*::ops::RangeFrom.* \\{start: 5\\}"
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gdb_test "print .." " = .*::ops::RangeFull"
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gdb_test "print str_some" \
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" = core::option::Option<\[a-z\]+::string::String>::Some\\(\[a-z\]+::string::String .*"
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gdb_test "print str_none" " = core::option::Option<\[a-z\]+::string::String>::None"
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gdb_test "print int_some" " = core::option::Option<u8>::Some\\(1\\)"
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gdb_test "print int_none" " = core::option::Option<u8>::None"
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gdb_test "print box_some" " = core::option::Option<\[a-z:\]*Box<u8>>::Some\\(.*\\)"
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gdb_test "print box_none" " = core::option::Option<\[a-z:\]*Box<u8>>::None"
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gdb_test "print custom_some" \
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" = simple::NonZeroOptimized::Value\\(\[a-z\]+::string::String .*"
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gdb_test "print custom_none" " = simple::NonZeroOptimized::Empty"
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proc test_one_slice {svar length base range} {
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global hex
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set result " = &\\\[.*\\\] \\{data_ptr: $hex, length: $length\\}"
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gdb_test "print $svar" $result
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gdb_test "print &${base}\[${range}\]" $result
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}
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test_one_slice slice 1 w 2..3
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test_one_slice slice2 1 slice 0..1
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test_one_slice all1 4 w ..
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test_one_slice all2 1 slice ..
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test_one_slice from1 3 w 1..
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test_one_slice from2 0 slice 1..
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test_one_slice to1 3 w ..3
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test_one_slice to2 1 slice ..1
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gdb_test "print w\[2..3\]" "Can't take slice of array without '&'"
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gdb_test_sequence "complete print y.f" "" \
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{"print y.field1" "print y.field2"}
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gdb_test_sequence "complete print y." "" \
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{"print y.field1" "print y.field2"}
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# Unimplemented, but we can at least test the parser productions.
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gdb_test "print (1,2,3)" "Tuple expressions not supported yet"
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gdb_test "print (1,)" "Tuple expressions not supported yet"
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gdb_test "print (1)" " = 1"
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gdb_test "print 23..97.0" "Range expression with different types"
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gdb_test "print (*parametrized.next.val)" \
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" = simple::ParametrizedStruct<i32> {next: simple::ParametrizedEnum<\[a-z:\]*Box<simple::ParametrizedStruct<i32>>>::Empty, value: 1}"
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gdb_test "print parametrized.next.val" \
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" = \\(simple::ParametrizedStruct<i32> \\*\\) $hex"
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gdb_test "print parametrized" \
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" = simple::ParametrizedStruct<i32> \\{next: simple::ParametrizedEnum<\[a-z:\]*Box<simple::ParametrizedStruct<i32>>>::Val\\{val: $hex\\}, value: 0\\}"
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load_lib gdb-python.exp
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if {[skip_python_tests]} {
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continue
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}
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gdb_test "python print(gdb.lookup_type('simple::HiBob'))" "simple::HiBob"
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