forked from Imagelibrary/binutils-gdb
a493ca9ec0
This commit is the result of running the gdb/copyright.py script, which automated the update of the copyright year range for all source files managed by the GDB project to be updated to include year 2023.
93 lines
3.7 KiB
Plaintext
93 lines
3.7 KiB
Plaintext
# Copyright 2020-2023 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 getting the range of flexible array members in Python.
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standard_testfile
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if { [prepare_for_testing "failed to prepare" \
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${testfile} ${srcfile}] } {
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return
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}
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# Skip all tests if Python scripting is not enabled.
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if { [skip_python_tests] } { continue }
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if { ![runto break_here] } {
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untested "could not run to break_here"
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return
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}
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# The various cases are:
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#
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# - ns: flexible array member with no size
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# - zs: flexible array member with size 0 (GNU C extension that predates the
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# standardization of the feature, but widely supported)
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# - zso: zero-size only, a corner case where the array is the sole member of
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# the structure
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gdb_test "python ns = gdb.parse_and_eval('ns').dereference()"
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gdb_test "python zs = gdb.parse_and_eval('zs').dereference()"
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gdb_test "python zso = gdb.parse_and_eval('zso').dereference()"
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# Print the whole structure.
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gdb_test "python print(ns)" "{n = 3, items = $hex}"
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gdb_test "python print(zs)" "{n = 3, items = $hex}"
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gdb_test "python print(zso)" "{items = $hex}"
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# Print all items.
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gdb_test "python print(ns\['items'\])" "$hex"
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gdb_test "python print(ns\['items'\]\[0\])" "101"
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gdb_test "python print(ns\['items'\]\[1\])" "102"
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gdb_test "python print(ns\['items'\]\[2\])" "103"
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gdb_test "python print(zs\['items'\])" "$hex"
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gdb_test "python print(zs\['items'\]\[0\])" "201"
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gdb_test "python print(zs\['items'\]\[1\])" "202"
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gdb_test "python print(zs\['items'\]\[2\])" "203"
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gdb_test "python print(zso\['items'\])" "$hex"
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gdb_test "python print(zso\['items'\]\[0\])" "301"
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gdb_test "python print(zso\['items'\]\[1\])" "302"
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gdb_test "python print(zso\['items'\]\[2\])" "303"
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# Check taking the address of array elements (how PR 28675 was originally
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# reported).
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gdb_test "python print(ns\['items'\] == ns\['items'\]\[0\].address)" "True"
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gdb_test "python print(ns\['items'\]\[0\].address + 1 == ns\['items'\]\[1\].address)" "True"
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gdb_test "python print(zs\['items'\] == zs\['items'\]\[0\].address)" "True"
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gdb_test "python print(zs\['items'\]\[0\].address + 1 == zs\['items'\]\[1\].address)" "True"
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gdb_test "python print(zso\['items'\] == zso\['items'\]\[0\].address)" "True"
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gdb_test "python print(zso\['items'\]\[0\].address + 1 == zso\['items'\]\[1\].address)" "True"
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# Verify the range attribute. It looks a bit inconsistent that the high bound
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# is sometimes 0, sometimes -1. It depends on the way the flexible array
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# member is specified and on the compiler version (the debug info is
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# different). But that's what GDB produces today, so that's what we test.
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gdb_test "python print(ns\['items'\].type.range())" "\\(0, 0\\)"
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gdb_test "python print(zs\['items'\].type.range())" "\\(0, (0|-1)\\)"
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gdb_test "python print(zso\['items'\].type.range())" "\\(0, (0|-1)\\)"
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# Test the same thing, but going explicitly through the array index's range
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# type.
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gdb_test "python print(ns\['items'\].type.fields()\[0\].type.range())" "\\(0, 0\\)"
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gdb_test "python print(zs\['items'\].type.fields()\[0\].type.range())" "\\(0, (0|-1)\\)"
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gdb_test "python print(zso\['items'\].type.fields()\[0\].type.range())" "\\(0, (0|-1)\\)"
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