binutils-gdb/gdb/testsuite/gdb.dlang/debug-expr.exp
Iain Buclaw f5e6296e21 [D] Fix crash when debug expression enabled.
While casting works as expected with expression debugging turned off,
this seems to be an indication that the D language parser function is
doing something wrong in the building of the expression.

Without changing the grammar, using UNOP_CAST_TYPE is the right thing to
do here, as the TypeExp handler has already wrapped the type around a
pair of OP_TYPE opcodes.

gdb/ChangeLog:

	* d-exp.y (CastExpression): Emit UNOP_CAST_TYPE.

gdb/testsuite/ChangeLog:

	* gdb.dlang/debug-expr.exp: New file.
2017-01-08 11:20:56 +01:00

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# Copyright 2017 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 "set debug expr 1" on d expressions.
if { [skip_d_tests] } { return -1 }
gdb_start
gdb_test_no_output "set language d"
gdb_test_no_output "set debug expression 1"
# Test whether the expression debug machinery accepts the expression.
proc test_debug_expr { cmd output } {
global gdb_prompt
gdb_test_multiple $cmd "" {
-re ".*Invalid expression.*\r\n$gdb_prompt $" {
fail $cmd
}
-re ".*\[\r\n\]$output\r\n$gdb_prompt $" {
pass $cmd
}
}
}
# This caused gdb to segfault.
test_debug_expr "print *(int*)(0)" "Cannot access memory at address 0x0"