Thread overview | ||||||
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January 31, 2020 format with floating points GC allocating in DMD 2.090 | ||||
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char[4096] buf; writeln(GC.stats.usedSize); foreach (i; 0 .. 10) { sformat(buf, "%f", 1.234f); writeln(GC.stats.usedSize); } Output with DMD32 D Compiler v2.089.1-dirty (Win10 x64): 16 16 16 ... Output with DMD32 D Compiler v2.090.0-dirty: 16 848 1664 2480 3296 4112 4944 5760 6576 7392 8208 |
January 31, 2020 Re: format with floating points GC allocating in DMD 2.090 | ||||
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Posted in reply to cc | On Friday, 31 January 2020 at 07:20:17 UTC, cc wrote:
> char[4096] buf;
> writeln(GC.stats.usedSize);
> foreach (i; 0 .. 10) {
> sformat(buf, "%f", 1.234f);
> writeln(GC.stats.usedSize);
> }
>
> Output with DMD32 D Compiler v2.089.1-dirty (Win10 x64):
> 16
> 16
> 16
> ...
>
> Output with DMD32 D Compiler v2.090.0-dirty:
> 16
> 848
> 1664
> 2480
> 3296
> 4112
> 4944
> 5760
> 6576
> 7392
> 8208
Report it as a bug because it's definitely a bug and there was changes to the GC in 2.090.0
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January 31, 2020 Re: format with floating points GC allocating in DMD 2.090 | ||||
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Posted in reply to bauss | On Friday, 31 January 2020 at 08:45:55 UTC, bauss wrote:
> On Friday, 31 January 2020 at 07:20:17 UTC, cc wrote:
>> char[4096] buf;
>> writeln(GC.stats.usedSize);
>> foreach (i; 0 .. 10) {
>> sformat(buf, "%f", 1.234f);
>> writeln(GC.stats.usedSize);
>> }
>>
>
> Report it as a bug because it's definitely a bug and there was changes to the GC in 2.090.0
2.086 x64 on linux:
0
64
112
160
208
256
304
352
400
448
496
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February 08, 2020 Re: format with floating points GC allocating in DMD 2.090 | ||||
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Posted in reply to bauss | On 31/01/2020 09:45, bauss wrote: > On Friday, 31 January 2020 at 07:20:17 UTC, cc wrote: >> char[4096] buf; >> writeln(GC.stats.usedSize); >> foreach (i; 0 .. 10) { >> sformat(buf, "%f", 1.234f); >> writeln(GC.stats.usedSize); >> } >> >> Output with DMD32 D Compiler v2.089.1-dirty (Win10 x64): >> 16 >> 16 >> 16 >> ... >> >> Output with DMD32 D Compiler v2.090.0-dirty: >> 16 >> 848 >> 1664 >> 2480 >> 3296 >> 4112 >> 4944 >> 5760 >> 6576 >> 7392 >> 8208 > > Report it as a bug because it's definitely a bug and there was changes to the GC in 2.090.0 It's a change in std.format: https://issues.dlang.org/show_bug.cgi?id=20566 |
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