Difference between revisions of "C implicit Team1 (E-ACSL) Benchmark2"
From CRV
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==== Formal Specification ==== | ==== Formal Specification ==== | ||
| − | The formal | + | The formal specification is given using [http://frama-c.com/acsl.html ACSL] |
/*@ assert \initialized(p); */ | /*@ assert \initialized(p); */ | ||
Revision as of 10:13, 5 June 2016
Contents
Benchmark Data
This benchmark is located in crv.liflab.ca@/home/e-acsl/crv16_benchmarks/c-implicit-track/realloc-init
The Trace Part
E-ACSL has no notion of trace
The Property Part
Informal Description
The benchmark relates to memory safety and more specifically to reading from a heap-allocated memory block that has not been fully initialised by a previous write.
This benchmark has been derived from the use of the realloc memory allocation function used to increase or decrease the size of a given heap-allocated memory block.
This benchmark explores the following scenario:
- A block of memory is allocated on a program's heap via a call to malloc.
- The first four bytes of the allocated block are initialized.
- The same memory block is then partially de-allocated and then re-allocated again (via realloc). This renders the last byte of the block uninitialised.
- The same memory block is then used in a print statement that potentially reads from an properly allocated location that has not been fully initialized.
Demonstration Traces
Formal Specification
The formal specification is given using ACSL
/*@ assert \initialized(p); */
where p is of pointer type.
