forked from Imagelibrary/binutils-gdb
a4f974e939
For the Rust language, to avoid segmentation fault in case of an empty array, do not try to copy any elements, but allocate and return the empty array immediately. With the command before the change, gdb crashes with message: (gdb) set lang rust (gdb) p [1;0] Fatal signal: Segmentation fault After the fix in this commit, gdb shows following message: (gdb) set lang rust (gdb) p [1;0] $1 = [] Update the existing test case gdb.rust/expr.exp to verify the change. Approved-By: Tom Tromey <tom@tromey.com>
181 lines
6.0 KiB
Plaintext
181 lines
6.0 KiB
Plaintext
# Copyright (C) 2016-2024 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 basic expression parsing and evaluation, without requiring a
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# Rust compiler. This serves as a smoke test.
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load_lib "rust-support.exp"
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require allow_rust_tests
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gdb_start
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gdb_test_no_output "set var \$something = 27"
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if {![set_lang_rust]} {
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warning "Rust expression tests suppressed."
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return
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}
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gdb_test "print 9__97" " = 997"
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gdb_test "print -5" " = -5"
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gdb_test "print +5" " = 5"
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gdb_test "print +-+-5" " = 5"
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gdb_test "print 3_2i32" " = 32"
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gdb_test "print 32i64" " = 32"
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gdb_test "print 8u8" " = 8"
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gdb_test "print 0x1f" " = 31"
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gdb_test "print 0o07" " = 7"
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gdb_test "print 0o70" " = 56"
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gdb_test "print 0b1_111" " = 15"
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gdb_test "print 32usize" " = 32"
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gdb_test "print 0x_4" " = 4"
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gdb_test "print 'z'" " = 122 'z'"
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gdb_test "print '\\t'" " = 9 '\\\\t'"
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gdb_test "print '\\n'" " = 10 '\\\\n'"
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gdb_test "print '\\r'" " = 13 '\\\\r'"
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gdb_test "print '\\\\'" " = 92 '\\\\\\\\'"
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gdb_test "print '\\0'" " = 0 '\\\\0'"
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gdb_test "print '\\''" " = 39 '\\\\''"
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gdb_test "print '\\\"'" " = 34 '\"'"
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gdb_test "print '\\xff'" " = 255 '\\\\xff'"
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gdb_test "print '\\xFF'" " = 255 '\\\\xff'"
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gdb_test "print '\\u\{F0eF\}'" " = 61679 '\\\\u\\{00f0ef\\}'"
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gdb_test "print b'z'" " = 122"
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gdb_test "print b'\\xfe'" " = 254"
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gdb_test "print b'\\t'" " = 9"
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gdb_test "print b'\\n'" " = 10"
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gdb_test "print b'\\r'" " = 13"
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gdb_test "print b'\\\\'" " = 92"
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gdb_test "print b'\\0'" " = 0"
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gdb_test "print b'\\''" " = 39"
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gdb_test "print b'\\\"'" " = 34"
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gdb_test "print b'\\xff'" " = 255"
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gdb_test "print 23.5" " = 23.5"
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gdb_test "print 23.5e1" " = 235"
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gdb_test "print 2e4" " = 20000"
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gdb_test "print 2_E+4_f64" " = 20000"
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gdb_test "print 5e-1" " = 0.5"
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gdb_test "print 5e-1f32" " = 0.5"
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gdb_test "print false" " = false"
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gdb_test "print true" " = true"
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gdb_test "print 1+2" " = 3"
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gdb_test "print 1i32 + 2i32" " = 3"
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gdb_test "print 2.0 - 1.0" " = 1"
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gdb_test "print !false" " = true"
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gdb_test "print !true" " = false"
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gdb_test "print !0u8" " = 255"
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gdb_test "print 7 * 7" " = 49"
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gdb_test "print 7usize * 7usize" " = 49"
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gdb_test "print 42 / 7" " = 6"
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gdb_test "print 42 % 7" " = 0"
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gdb_test "print 1.0 / 2.0" " = 0.5"
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gdb_test "print 1 < 2" " = true"
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gdb_test "print !(1 < 2)" " = false"
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gdb_test "print 3 + 4 * 7" " = 31"
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gdb_test "print 1 > 2" " = false"
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gdb_test "print 1 | 2" " = 3"
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gdb_test "print 1 & 2" " = 0"
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gdb_test "print 3 & 2" " = 2"
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gdb_test "print 3 ^ 2" " = 1"
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gdb_test "print (1 < 0) || true" " = true"
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gdb_test "print (1 > 0) && false" " = false"
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gdb_test "print 'z' == 'z'" " = true"
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gdb_test "print '\\u{1016f}' != 'q'" " = true"
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gdb_test "print 32 <= 32" " = true"
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gdb_test "print 32 >= 32" " = true"
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gdb_test "print 1 << 5" " = 32"
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gdb_test "print 32usize >> 5" " = 1"
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gdb_test "ptype 32i32 as f64" "type = f64"
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gdb_test "ptype 0xf9f9f9f90000" "type = i64"
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gdb_test "print ()" " = \\(\\)"
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gdb_test "print \[1,2,3,4\]" " = \\\[1, 2, 3, 4\\\]"
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gdb_test "ptype \[1,2,3,4\]" "type = \\\[i32; 4\\\]"
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gdb_test "print \[mut 1,2,3,4\]" " = \\\[1, 2, 3, 4\\\]"
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gdb_test "print \[1,2 3" "',' or ']' expected"
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gdb_test "print \[1 2" "',', ';', or ']' expected"
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gdb_test "print \[23\]" " = \\\[23\\\]"
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gdb_test "print \[0;0\]" " = \\\[\\\]"
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gdb_test "print \[1;0\]" " = \\\[\\\]"
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gdb_test "print \[0;1\]" " = \\\[0\\\]"
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gdb_test "print b\"hi rust\"" " = b\"hi rust\""
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# This isn't rusty syntax yet, but that's another bug -- this is just
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# testing that byte escapes work properly.
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gdb_test "print b\"\\xddhi bob\"" " = b\"\\\\335hi bob\""
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gdb_test "print b\"has\\0nul\"" " = b\"has\\\\000nul\""
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gdb_test "print br##\"hi\"##" " = b\"hi\""
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gdb_test "print br##\"hi" "Unexpected EOF in string"
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gdb_test "print br##\"hi\"" "Unexpected EOF in string"
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gdb_test "print br##\"hi\"#" "Unexpected EOF in string"
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# Test that convenience variables and functions work with the Rust
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# parser.
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gdb_test "print \$something" " = 27"
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gdb_test "print \$_isvoid(\$nosuchvariable)" " = 1"
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gdb_test "print \$_isvoid(\$something)" " = 0"
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gdb_test "print \[23usize; 4\]" " = \\\[23, 23, 23, 23\\\]"
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gdb_test "ptype \[23usize; 4\]" " = \\\[usize; 4\\\]"
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gdb_test "print \[mut 23usize; 4\]" " = \\\[23, 23, 23, 23\\\]"
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# Test lexer corner cases.
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gdb_test "print 0x0 as *mut ()" " = \\\(\\*mut \\\(\\\)\\\) 0x0"
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gdb_test "print 0x0 as fn(i64) -> ()" " = \\\(\\*mut fn \\\(i64\\\) -> \\\(\\\)\\\) 0x0"
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# The lexer doesn't treat this as a failure, but rather as two tokens,
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# and we error out while trying to look up 'r'. This is fine, though
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# -- what's important is that it isn't accepted.
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gdb_test "print r#" "No symbol 'r' in current context"
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gdb_test "printf \"%d %d\\n\", 23+1, 23-1" "24 22"
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gdb_test "print 5," "Syntax error near ','"
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# Check expression debug works for strings.
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gdb_test "with debug expression 1 -- print \"foo\"" \
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[multi_line \
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"Operation: OP_AGGREGATE" \
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" Type: &str" \
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" nullptr" \
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" Vector:" \
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" String: data_ptr" \
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" Operation: UNOP_ADDR" \
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" Operation: OP_STRING" \
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" String: foo" \
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" String: length" \
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" Operation: OP_LONG" \
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" Type: usize" \
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" Constant: 3" \
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"Operation: OP_LONG" \
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" Type: i32" \
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" Constant: 0" \
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"evaluation of this expression requires the target program to be active"] \
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"print a string with expression debug turned on"
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# PR rust/31082 - truncating to a pointer would fail. Depending on
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# the default host architecture, this may or may not print a warning.
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gdb_test "print (0xffffffd00000009a as *mut u64)" \
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"(warning: value truncated\[\r\n\]+)?.* = \\(\\*mut u64\\) $hex"
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