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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
|---|---|---|---|---|---|---|---|---|---|
| 0000961 | Frama-C | Kernel | public | 2011-09-13 14:50 | 2011-10-10 14:14 | ||||
| Reporter | yakobowski | ||||||||
| Assigned To | virgile | ||||||||
| Priority | normal | Severity | minor | Reproducibility | always | ||||
| Status | closed | Resolution | fixed | ||||||
| Product Version | Frama-C Carbon-20110201 | ||||||||
| Target Version | Fixed in Version | Frama-C Nitrogen-20111001 | |||||||
| Summary | 0000961: Cil incorrectly cast arguments to switch to int | ||||||||
| Description | The argument of a switch construct should not be cast to int (cf. 6.8.4.2.5). The following program gives a reproducible test case. int main () { unsigned int v = 0xAAAAAAAA; switch(v) { case 0xAAAAAAAA: printf("taken\n"); return 0; default: printf("not taken\n"); return 1; } } Result with frama-c -val (current version, that handles switch) __retres ? {1} Compiled by gcc: ./a.out taken GCC's output is the correct one. | ||||||||
| Tags | No tags attached. | ||||||||
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yakobowski (manager) 2011-09-13 15:37 |
Commit 15110 fixes the most problematic part of the problem: integral expressions are no longer cast to int, and non-integral ones are now properly rejected. However, some work remains to be done: the expressions on the labels must be cast to the type of the expression. |
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yakobowski (manager) 2011-09-29 17:42 |
Commit 15110 was buggy in that it did not cas expressions that were too small to int. This is now corrected, but the second part of note 2255 still applies. |
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yakobowski (manager) 2011-09-30 20:34 |
Fixed in revision 15381. |
| Notes |
| Issue History |
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| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2011-09-13 14:50 | yakobowski | New Issue | |
| 2011-09-13 14:50 | yakobowski | Status | new => assigned |
| 2011-09-13 14:50 | yakobowski | Assigned To | => virgile |
| 2011-09-13 15:00 | yakobowski | Description Updated | |
| 2011-09-13 15:37 | yakobowski | Note Added: 0002255 | |
| 2011-09-13 15:37 | yakobowski | Priority | high => normal |
| 2011-09-13 15:37 | yakobowski | Severity | major => minor |
| 2011-09-29 17:40 | svn | ||
| 2011-09-29 17:42 | yakobowski | Note Added: 0002341 | |
| 2011-09-30 20:34 | yakobowski | Note Added: 0002372 | |
| 2011-09-30 20:34 | yakobowski | Status | assigned => resolved |
| 2011-09-30 20:34 | yakobowski | Resolution | open => fixed |
| 2011-10-10 14:13 | signoles | Fixed in Version | => Frama-C Nitrogen-20111001 |
| 2011-10-10 14:14 | signoles | Status | resolved => closed |
| Issue History |