klee failed external call: ftw

[Daniel Guo]

Hi guys,

I have a program running the program "pfscan" on klee.
I can compile pfscan via regular make and then run it, however, when i move
to klee, it always gives me an error "Error: failed external call: ftw".
The function "ftw" is from "/usr/include/ftw.h" (but klee-uclibc also have
one copy in "uclibc_dir/include") and pfscan uses it to extract the search
directory and invoke the callback func.

Is klee able to handle this function call?
If not, how can i do to figure it out? use similar function to replace
"ftw"?

I also have a "failed external function call" on the function "fscanf",
then i use "fread" instead of "fscanf" and it works.


Thank you~!

Daniel.

[Cristian Cadar]

Hi, we have an open issue about fscanf:
https://github.com/klee/klee/issues/30
You might want to document the ftw issue there too.

Cristian

Post by Daniel Guo
Hi guys,
I have a program running the program "pfscan" on klee.
I can compile pfscan via regular make and then run it, however, when i
ftw".
The function "ftw" is from "/usr/include/ftw.h" (but klee-uclibc also
have one copy in "uclibc_dir/include") and pfscan uses it to extract the
search directory and invoke the callback func.
Is klee able to handle this function call?
If not, how can i do to figure it out? use similar function to replace
"ftw"?
I also have a "failed external function call" on the function "fscanf",
then i use "fread" instead of "fscanf" and it works.
Thank you~!
Daniel.
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