0001079: Imprecision of 'Defs' when querying precise location

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Date Submitted

Last Update

0001079

Frama-C

Plug-in > scope

public

2012-02-03 21:56

2014-02-12 16:58

Reporter

yakobowski

Assigned To

yakobowski

Priority

normal

Severity

feature

Reproducibility

always

Status

closed

Resolution

fixed

Platform

OS Version

Product Version

Frama-C Nitrogen-20111001

Target Version

Fixed in Version

Frama-C Oxygen-20120901

Summary

0001079: Imprecision of 'Defs' when querying precise location

Description

-------------------------
typedef struct {
  int a;
  int b;
} ts;

ts t[10];

void init() {
  t[1].a = 1;
  t[1].b = 2;
}

unsigned int main () {
  init();
  return t[1].a;
}
------------------------

Requiring the instructions that define t[1].a in main yields both lines of function init, which is a bit imprecise. Since slicing main on its return value removes the line 't[1].b = 2', the pdg is probably precise enough. Thus the imprecision lies somewhere in Scope.

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Notes
(0004685) yakobowski (manager) 2014-02-12 16:58	Fix committed to stable/neon branch.

Issue History
Date Modified	Username	Field	Change
2012-02-03 21:56	yakobowski	New Issue
2012-02-03 21:56	yakobowski	Status	new => assigned
2012-02-03 21:56	yakobowski	Assigned To	=> Anne
2012-02-03 21:56	yakobowski	Assigned To	Anne => yakobowski
2012-02-04 12:47	svn	Checkin
2012-02-04 12:47	svn	Status	assigned => resolved
2012-02-04 12:47	svn	Resolution	open => fixed
2012-09-19 17:15	signoles	Fixed in Version	=> Frama-C Oxygen-20120901
2012-09-19 17:16	signoles	Status	resolved => closed
2014-02-12 16:58	yakobowski	Note Added: 0004685
2014-02-12 16:58	yakobowski	Status	closed => resolved