main
|
Last change
on this file was ea777aa, checked in by Alex Wilton <awilton@…>, 3 years ago |
|
Moved examples, include, build_default.properties, common.xml, and README out from dev.civl.com into the root of the repo.
git-svn-id: svn://vsl.cis.udel.edu/civl/trunk@5704 fb995dde-84ed-4084-dfe6-e5aef3e2452c
|
-
Property mode
set to
100644
|
|
File size:
608 bytes
|
| Line | |
|---|
| 1 | /* This example shows that CIVL reports an error when
|
|---|
| 2 | * the program tries to dereference a pointer referring
|
|---|
| 3 | * to a unit of a heap that is already removed.
|
|---|
| 4 | * Command line execution:
|
|---|
| 5 | * civl verify removedHeapPointer.cvl
|
|---|
| 6 | */
|
|---|
| 7 | #include <civlc.cvh>
|
|---|
| 8 |
|
|---|
| 9 | int *gp;
|
|---|
| 10 | _Bool gStart = $false;
|
|---|
| 11 |
|
|---|
| 12 | void foo(){
|
|---|
| 13 | $scope sf = $here;
|
|---|
| 14 |
|
|---|
| 15 | gp = (int *) $malloc(sf, sizeof(int));
|
|---|
| 16 | gStart = $true;
|
|---|
| 17 | *gp = 1;
|
|---|
| 18 | $free(gp);
|
|---|
| 19 | }
|
|---|
| 20 |
|
|---|
| 21 | void goo(){
|
|---|
| 22 | $when(gStart);
|
|---|
| 23 | *gp = 2;// an error is possible when the process f has already returned.
|
|---|
| 24 | }
|
|---|
| 25 |
|
|---|
| 26 | void main(){
|
|---|
| 27 | $proc f = $spawn foo();
|
|---|
| 28 | $proc g = $spawn goo();
|
|---|
| 29 |
|
|---|
| 30 | $wait(f);
|
|---|
| 31 | $wait(g);
|
|---|
| 32 | }
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
