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| ID | Project | Category | View Status | Date Submitted | Last Update | ||||
|---|---|---|---|---|---|---|---|---|---|
| 0000790 | Frama-C | Kernel > ACSL implementation | public | 2011-04-12 15:05 | 2014-02-12 16:59 | ||||
| Reporter | patrick | ||||||||
| Assigned To | virgile | ||||||||
| Priority | normal | Severity | minor | Reproducibility | have not tried | ||||
| Status | closed | Resolution | fixed | ||||||
| Product Version | Frama-C GIT, precise the release id | ||||||||
| Target Version | Fixed in Version | Frama-C Nitrogen-20111001 | |||||||
| Summary | 0000790: integrity problem of the AST on calls to functions with __attribute__ ((noreturn)) | ||||||||
| Description | Calls to function with __attribute__ ((noreturn)) have no successor. If it is wright, that raises an ACSL problem on the specification of such functions. What are their specification? | ||||||||
| Additional Information | The command: > frama-c -check -print tests/slicing/loops.c gives: tests/slicing/loops.c:63:[kernel] failure: [AST Integrity Check] AST after normalization statement stop();(35) in function stop_f1 has no successor. | ||||||||
| Tags | No tags attached. | ||||||||
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patrick (developer) 2011-04-12 16:08 |
A call to a function with no successor means the function makes no return, nor exit! Isn't it? |
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virgile (developer) 2011-04-12 21:05 |
Gcc's attribute noreturn means indeed that the called function will never give back control to its caller. That's why a call to such a function has no successor (the integrity checker is wrong here). In practice, an ACSL spec of such a function would always include ensures \false; (and quite often exits \true; though gcc's documentation mentions the fact that the function might in fact do a longjmp). |
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patrick (developer) 2011-04-13 08:08 |
Don't the kernel should add an "ensures \false;" to the specs of such function? |
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2014-02-12 16:59 |
Fix committed to stable/neon branch. |
| Notes |
| Issue History |
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| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2011-04-12 15:05 | patrick | New Issue | |
| 2011-04-12 15:05 | patrick | Status | new => assigned |
| 2011-04-12 15:05 | patrick | Assigned To | => Anne |
| 2011-04-12 16:05 | patrick | Assigned To | Anne => virgile |
| 2011-04-12 16:05 | patrick | Category | Plug-in > slicing => Kernel > ACSL implementation |
| 2011-04-12 16:05 | patrick | Summary | integrity problem on the exported AST => integrity problem of the AST on calls to functions with __attribute__ ((noreturn)) |
| 2011-04-12 16:05 | patrick | Description Updated | |
| 2011-04-12 16:05 | patrick | Additional Information Updated | |
| 2011-04-12 16:08 | patrick | Note Added: 0001740 | |
| 2011-04-12 21:05 | virgile | Note Added: 0001742 | |
| 2011-04-13 08:08 | patrick | Note Added: 0001743 | |
| 2011-04-13 18:09 | svn | ||
| 2011-04-13 18:09 | svn | Status | assigned => resolved |
| 2011-04-13 18:09 | svn | Resolution | open => fixed |
| 2011-04-14 14:01 | svn | ||
| 2011-10-10 14:13 | signoles | Fixed in Version | => Frama-C Nitrogen-20111001 |
| 2011-10-10 14:14 | signoles | Status | resolved => closed |
| 2013-12-19 01:12 | patrick | Source_changeset_attached | => framac master 43f5c70f |
| 2013-12-19 01:12 | Source_changeset_attached | => framac master 23598dbf | |
| 2014-02-12 16:54 | patrick | Source_changeset_attached | => framac stable/neon 43f5c70f |
| 2014-02-12 16:54 | Source_changeset_attached | => framac stable/neon 23598dbf | |
| 2014-02-12 16:59 | Note Added: 0004807 | ||
| 2014-02-12 16:59 | Status | closed => resolved | |
| Issue History |