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ID0001471: This issue was created automatically from Mantis Issue 1471. Further discussion may take place here.

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Id	Project	Category	View	Due Date	Updated
ID0001471	Frama-C	Kernel	public	2013-08-29	2019-07-05

Reporter	pascal	Assigned To	signoles	Resolution	suspended
Priority	low	Severity	minor	Reproducibility	always
Platform	-	OS	-	OS Version	-
Product Version	Frama-C GIT, precise the release id	Target Version	-	Fixed in Version	-

Description :

Consider the program below. The pre-condition of f() is not true for all calls.

/*@ ensures l <= \result <= u ; */ int Frama_C_interval(int l, int u);

/*@ requires \valid(p+(0..30)); */ void f(char * p) { *(p + Frama_C_interval(0,30)) = 1; }

int x; void (pf)(char) = f;

void g(char *p) { x = 1; pf(p); }

main(){ char t[31]; g(t); g(t+Frama_C_interval(0,1)); }

Yet:

$ frama-c -val t.c -report …

--- Properties of Function 'f'

[ Valid ] Pre-condition (file t.c, line 4) by Call Preconditions.

And frama-c-gui -val t.c similarly shows a green icon for f's contract when the body of f is displayed.

Attachments

• t.c