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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0001190 | Frama-C | Kernel | public | 2012-06-08 15:38 | 2012-06-09 16:04 | ||||||||
| Reporter | Anne | ||||||||||||
| Assigned To | virgile | ||||||||||||
| Priority | normal | Severity | minor | Reproducibility | have not tried | ||||||||
| Status | assigned | Resolution | open | ||||||||||
| Product Version | Frama-C Nitrogen-20111001 | ||||||||||||
| Target Version | Fixed in Version | ||||||||||||
| Summary | 0001190: __builtin_alloca | ||||||||||||
| Description | In a file with a local array which size in defined by a variable : float a[n]; I get : [kernel] warning: Variable-sized local variable a which is ok. But then, when I use the value analysis, I get : [kernel] warning: No code for function __builtin_alloca, default assigns generated because the declaration has been translated in : __lengthofa = (unsigned int)n; a = (float *)__builtin_alloca(sizeof(*a) * __lengthofa); which looks fine, but the question is : shouldn't the assigns property be defined somewhere inside Frama-C for the builtin functions ? As a workaround, what prototype and assigns should I write for this function. | ||||||||||||
| Tags | No tags attached. | ||||||||||||
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yakobowski (manager) 2012-06-09 16:04 |
Within Value, __builtin_alloca should be stubbed by a malloc-like builtin. Some of the existing builtins in malloc.h could be used. |
| Notes |
| Issue History |
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| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2012-06-08 15:38 | Anne | New Issue | |
| 2012-06-08 17:31 | signoles | Status | new => assigned |
| 2012-06-08 17:31 | signoles | Assigned To | => virgile |
| 2012-06-09 16:04 | yakobowski | Note Added: 0003069 | |
| Issue History |