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| ID | Category | Severity | Reproducibility | Date Submitted | Last Update | ||||
| 0006456 | [Squeak] Collections | minor | always | 04-29-07 19:45 | 04-18-10 21:59 | ||||
| Reporter | nicolas cellier | View Status | public | ||||||
| Assigned To | andreas | ||||||||
| Priority | normal | Resolution | fixed | ||||||
| Status | closed | Product Version | 3.9 | ||||||
| Summary | 0006456: [BUG] Interval of Float do: infinite loop | ||||||||
| Description |
A very simple example: | x | x := (1.0 timesTwoPower: 53). (x to: x + 2) size. x to: x+2 do: [:i | Transcript cr; show: i printString] |
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| Additional Information |
do: should be defined with this arithmetic inside loop: value := start + (n * step) that would be compatible both with size and at: rather than: value := value + step Same for reverseDo: This is related to bugs 1602, 1603, 6438, 6455 If one will argue not to use Float, I answer in advance why don't you remove Float from the image? |
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| Attached Files |
 Interval-InfiniteLoop-Test.1.cs [^] (802 bytes) 04-30-07 16:51 Interval-InfiniteLoop-Patch.1.cs [^] (2,037 bytes) 04-30-07 16:52 |
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SYSTEM WARNING: Creating default object from empty value SYSTEM WARNING: Creating default object from empty value SYSTEM WARNING: Creating default object from empty value SYSTEM WARNING: Creating default object from empty value SYSTEM WARNING: Creating default object from empty value SYSTEM WARNING: Creating default object from empty value SYSTEM WARNING: Creating default object from empty value
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Notes |
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(0010630 - 341 - 407 - 407 - 407 - 407 - 407) wiz 04-29-07 22:16 |
another data point: on my system ( iMac 400Hz running Os9.1 SqVM3.8.9b7 and 3.9 7067) the above example does not infinitly loop. (It actual does not iterations inside the do. (x - 2 to: x) do: [:i | Transcript cr; show: i printString] on the other hand does loop infinitely. Yours in curiosity and service, --Jerome Peace |
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(0010633 - 195 - 213 - 213 - 213 - 213 - 213) nicolas cellier 04-30-07 16:55 |
Hi Jerome. Very strange, i thought Squeak did strict IEEE 754 double precision and would execute bit-wise whatever the machine. You can also increase intervak size (x to: x+4) or (x to: x+8). |
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(0010655 - 348 - 428 - 428 - 428 - 428 - 428) nicolas cellier 05-03-07 23:40 |
As noted on vwnc list, another detail is that optimized to:do: loop still use the: value := value + step So once the patch is loaded, you obtain a non null count with this one: | eps count | eps := 1.0 timesTwoPower: -52. count := 0. 1 + eps to: 2 do: [:x | count := count + 1]. (1 + eps to: 2) do: [:x | count := count - 1]. ^count |
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(0011731 - 169 - 223 - 223 - 223 - 223 - 223) nicolas cellier 02-02-08 20:57 |
"fix begin" Installer mantis bug: 6456 fix:'Interval-InfiniteLoop-Patch.1.cs'. "fix test" Installer mantis bug: 6456 fix:'Interval-InfiniteLoop-Test.1.cs'. "fix end" |
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(0013447 - 127 - 139 - 469 - 469 - 469 - 469) nicolas cellier 12-22-09 15:34 |
fixed in http://source.squeak.org/trunk/Collections-nice.256.mcz [^] http://source.squeak.org/trunk/CollectionsTests-nice.124.mcz [^] |
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Issue History |
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| Date Modified | Username | Field | Change |
| 04-29-07 19:45 | nicolas cellier | New Issue | |
| 04-29-07 22:16 | wiz | Note Added: 0010630 | |
| 04-30-07 16:51 | nicolas cellier | File Added: Interval-InfiniteLoop-Test.1.cs | |
| 04-30-07 16:52 | nicolas cellier | File Added: Interval-InfiniteLoop-Patch.1.cs | |
| 04-30-07 16:55 | nicolas cellier | Note Added: 0010633 | |
| 05-03-07 23:40 | nicolas cellier | Note Added: 0010655 | |
| 02-02-08 20:57 | nicolas cellier | Note Added: 0011731 | |
| 01-10-09 01:53 | Keith_Hodges | Status | new => pending |
| 01-10-09 02:27 | Keith_Hodges | Status | pending => testing |
| 01-10-09 03:39 | Keith_Hodges | Status | testing => resolved |
| 01-10-09 03:39 | Keith_Hodges | Fixed in Version | => 3.11 |
| 01-10-09 03:39 | Keith_Hodges | Resolution | open => fixed |
| 01-10-09 03:39 | Keith_Hodges | Assigned To | => Keith_Hodges |
| 01-10-09 03:41 | Keith_Hodges | Status | resolved => testing |
| 10-03-09 19:34 | Keith_Hodges | Status | testing => assigned |
| 10-03-09 19:34 | Keith_Hodges | Assigned To | Keith_Hodges => andreas |
| 10-03-09 20:28 | nicolas cellier | Relationship added | related to 0001602 |
| 10-03-09 20:28 | nicolas cellier | Relationship added | related to 0001603 |
| 10-03-09 20:29 | nicolas cellier | Relationship added | related to 0006438 |
| 10-03-09 20:29 | nicolas cellier | Relationship added | related to 0006455 |
| 12-22-09 15:34 | nicolas cellier | Status | assigned => resolved |
| 12-22-09 15:34 | nicolas cellier | Fixed in Version | 3.11 => trunk |
| 12-22-09 15:34 | nicolas cellier | Note Added: 0013447 | |
| 04-18-10 21:59 | andreas | Status | resolved => closed |
| 08-21-10 13:09 | nicolas cellier | Relationship added | child of 0007002 |
| 02-03-11 23:27 | nicolas cellier | Relationship added | related to 0007093 |
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