[Issue 18140] New: experimental allocators, bitmapped_block UB on OSX 64 bits

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18140

          Issue ID: 18140
           Summary: experimental allocators, bitmapped_block UB on OSX 64
                    bits
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Mac OS X
            Status: NEW
          Severity: normal
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: b2.temp at gmx.com

See
https://auto-tester.puremagic.com/show-run.ghtml?projectid=14&runid=2968834&isPull=true.

****** FAIL debug64 std.experimental.allocator.building_blocks.bitmapped_block
core.exception.AssertError at std/experimental/allocator/building_blocks/bitmapped_block.d(173):
Data must be aligned properly
----------------
4   test_runner                         0x000000011017985b onAssertErrorMsg +
107
5   test_runner                         0x0000000110179ab8 _d_assert_msg + 68
6   test_runner                         0x000000010fd0d20f pure ref
std.experimental.allocator.building_blocks.bitmapped_block.BitmappedBlock!(-2uL,
64u,
std.experimental.allocator.building_blocks.null_allocator.NullAllocator).BitmappedBlock
std.experimental.allocator.building_blocks.bitmapped_block.BitmappedBlock!(-2uL,
64u,
std.experimental.allocator.building_blocks.null_allocator.NullAllocator).BitmappedBlock.__ctor(ubyte[])
+ 111
7   test_runner                         0x000000010fd0d3a3 pure ref
std.experimental.allocator.building_blocks.bitmapped_block.BitmappedBlock!(-2uL,
64u,
std.experimental.allocator.building_blocks.null_allocator.NullAllocator).BitmappedBlock
std.experimental.allocator.building_blocks.bitmapped_block.BitmappedBlock!(-2uL,
64u,
std.experimental.allocator.building_blocks.null_allocator.NullAllocator).BitmappedBlock.__ctor(ubyte[],
uint) + 51
8   test_runner                         0x000000010fd0ff3f pure
std.experimental.allocator.building_blocks.bitmapped_block.BitmappedBlock!(-2uL,
64u,
std.experimental.allocator.building_blocks.null_allocator.NullAllocator).BitmappedBlock
std.experimental.allocator.building_blocks.bitmapped_block.BitmappedBlock!(-2uL,
64u,
std.experimental.allocator.building_blocks.null_allocator.NullAllocator).BitmappedBlock.__unittest_std_experimental_allocator_building_blocks_bitmapped_block_d_53_17().__lambda2()
+ 103
9   test_runner                         0x000000010fd0f6f7 void
std.experimental.allocator.common.testAllocator!(std.experimental.allocator.building_blocks.bitmapped_block.BitmappedBlock!(-2uL,
64u,
std.experimental.allocator.building_blocks.null_allocator.NullAllocator).BitmappedBlock.__unittest_std_experimental_allocator_building_blocks_bitmapped_block_d_53_17().__lambda2()).testAllocator()
+ 39
10  test_runner                         0x000000010fd0d002 void
std.experimental.allocator.building_blocks.bitmapped_block.BitmappedBlock!(-2uL,
64u,
std.experimental.allocator.building_blocks.null_allocator.NullAllocator).BitmappedBlock.__unittest_std_experimental_allocator_building_blocks_bitmapped_block_d_53_17()
+ 74
11  test_runner                         0x000000010fd04cfb void
std.experimental.allocator.building_blocks.bitmapped_block.__modtest() + 103
12  test_runner                         0x000000010ecaf7d3 void
test_runner.doTest(object.ModuleInfo*, ref core.runtime.UnitTestResult) + 99
13  test_runner                         0x000000010ecaf6db
core.runtime.UnitTestResult test_runner.testModules() + 395
14  test_runner                         0x000000010ecaf527
core.runtime.UnitTestResult test_runner.tester() + 31
15  test_runner                         0x000000011017a593 runModuleUnitTests +
151
16  test_runner                         0x000000011018f2a5 void
rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).runAll()
+ 37
17  test_runner                         0x000000011018f223 void
rt.dmain2._d_run_main(int, char**, extern (C) int
function(char[][])*).tryExec(scope void delegate()) + 51
18  test_runner                         0x000000011018f186 _d_run_main + 814
19  test_runner                         0x000000010ecaf3d5 main + 33
20  test_runner                         0x000000010ecaf393 start + 51
21  ???                                 0x0000000000000001 0x0 + 1

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