8f17729f21
This is to avoid an unnecessary multiple-choice menu for an
expression involving an enumeral declared in two types, when
the second type is an identical copy of the first type. This
happens in the following situation:
type Color is (Black, Red, Green, Blue, White);
type RGB_Color is new Color range Red .. Blue;
In that case, an implict type is created, and is used as the base
type for type RGB_Color. This base type is a copy of type Color.
We've added some extensive comments explaining the situation and
our approach further.
gdb/ChangeLog:
* ada-lang.c (ada_identical_enum_types_p): New function.
(symbols_are_identical_enums): New function.
(remove_extra_symbols): Do nothing if NSYMS < 2.
Use symbols_are_identical_enums.
gdb/testsuite/ChangeLog:
* gdb.ada/same_enum: New testcase.
37 lines
1.3 KiB
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37 lines
1.3 KiB
Text
# Copyright 2011 Free Software Foundation, Inc.
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#
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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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load_lib "ada.exp"
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set testdir "same_enum"
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set testfile "${testdir}/a"
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set srcfile ${srcdir}/${subdir}/${testfile}.adb
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set binfile ${objdir}/${subdir}/${testfile}
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file mkdir ${objdir}/${subdir}/${testdir}
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if {[gdb_compile_ada "${srcfile}" "${binfile}" executable [list debug ]] != "" } {
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return -1
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}
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clean_restart ${testfile}
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# Try printing the value of the enumeral `red'. This is normally
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# ambiguous, as there are two distinct types that define that
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# littleral. But, from a practical standpoint, it doesn't matter
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# which one we pick, since both have the same value (in most cases,
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# it's because the two types are strongly related).
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gdb_test "print red" "= red"
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