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June 07, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 --- Comment #1 from FeepingCreature <default_357-line@yahoo.de> --- (happens with void main() @safe as well) -- |
June 07, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 --- Comment #2 from FeepingCreature <default_357-line@yahoo.de> --- Even weirder reproduction! void main() { test(({ return badAlias([1, 2, 3]); })()); } void test(int[] array) { assert(array[0] == 1); assert(array[1] == 2); assert(array[2] == 3); } alias badAlias = (int[] array) => id(array); int[] id(int[] array) { return array; } -- |
June 07, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 --- Comment #3 from FeepingCreature <default_357-line@yahoo.de> --- It seems like DMD thinks it can stack allocate the array literal? -- |
June 07, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 Mario Kroeplin <kroeplin.d@googlemail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |industry CC| |kroeplin.d@googlemail.com -- |
June 07, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 Iain Buclaw <ibuclaw@gdcproject.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ibuclaw@gdcproject.org --- Comment #4 from Iain Buclaw <ibuclaw@gdcproject.org> --- (In reply to FeepingCreature from comment #3) > It seems like DMD thinks it can stack allocate the array literal? Yes. -- |
June 07, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 --- Comment #5 from Iain Buclaw <ibuclaw@gdcproject.org> --- (In reply to FeepingCreature from comment #0) > Consider this code: > > import std.algorithm; > import std.conv; > import std.range; > > void main() > { > auto result = ({ return [1, 2, 3].badMap; })().array; > > assert(result == [1, 2, 3], result.to!string); > } > > alias badMap = range => range.map!(a => a); This is the original, but without imports (could use as an extra test). --- template map(fun...) { auto map(int[] r) { static struct MapResult(alias fun) { this(int[] input) { _input = input; } auto length() { return _input.length; } bool empty() { return !_input.length; } auto ref front() { return fun(_input[0]); } void popFront() { _input = _input[1 .. $]; } private int[] _input; } return MapResult!(fun)(r); } } auto array(Range)(Range r) { const length = r.length; if (length == 0) return null; int[] result; result.length = 3; size_t i; foreach (e; r) { result[i] = e; ++i; } assert(i == length); return (() @trusted => cast(int[]) result)(); } void main() { auto result = [1, 2, 3].badMap.dgify()().array; assert(result == [1, 2, 3]); } alias badMap = range => range.map!(a => a); alias dgify = (lazy value) => &value; -- |
June 07, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 Iain Buclaw <ibuclaw@gdcproject.org> changed: What |Removed |Added ---------------------------------------------------------------------------- See Also| |https://issues.dlang.org/sh | |ow_bug.cgi?id=20734 --- Comment #6 from Iain Buclaw <ibuclaw@gdcproject.org> --- Probably introduced by https://github.com/dlang/dmd/pull/11039 -- |
June 07, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 --- Comment #7 from Iain Buclaw <ibuclaw@gdcproject.org> --- Fixed in master by https://github.com/dlang/dmd/pull/14089 -- |
June 07, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 Dlang Bot <dlang-bot@dlang.rocks> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |pull --- Comment #8 from Dlang Bot <dlang-bot@dlang.rocks> --- @dkorpel created dlang/dmd pull request #14193 "Fix Issue 23170 - Array literal passed to map in lambda, then returneā¦" fixing this issue: - Fix Issue 23170 - Array literal passed to map in lambda, then returned from nested function, is memory corrupted https://github.com/dlang/dmd/pull/14193 -- |
June 08, 2022 [Issue 23170] Array literal passed to map in lambda, then returned from nested function, is memory corrupted | ||||
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https://issues.dlang.org/show_bug.cgi?id=23170 Dlang Bot <dlang-bot@dlang.rocks> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #9 from Dlang Bot <dlang-bot@dlang.rocks> --- dlang/dmd pull request #14193 "Fix Issue 23170 - Array literal passed to map in lambda, then returneā¦" was merged into stable: - f192ae3d24d73c566754c5eb2e14dcdd1dbe5549 by dkorpel: Fix Issue 23170 - Array literal passed to map in lambda, then returned from nested function, is memory corrupted https://github.com/dlang/dmd/pull/14193 -- |
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