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https://sourceware.org/git/binutils-gdb.git
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d82e5429b5
This changes skip_python_tests to invert the sense, and renames it to allow_python_tests.
92 lines
3.6 KiB
Plaintext
92 lines
3.6 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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require allow_python_tests
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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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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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