Can I tell which version of newlib I have?

Ray Hurst
Tue Apr 24 22:19:00 GMT 2007

Brian Dessent wrote:
> Brian Dessent wrote:
>> The version you are using is whatever was current in CVS when the
>> version of Cygwin you're using was built.  Newlib doesn't really do
>> versions, other than a token release every year around December.
>> But that's completely irrelevant for anything relating to malloc, as
>> Cygwin does not use newlib for malloc.
> Oh and as for the second part of the question, here is a quote from
> how-to-debug-cygwin.txt:
> 7. Heap corruption
>    If your program crashes at malloc() or free() or when it references
> some
>    malloc()'ed memory, it looks like heap corruption. You can configure
> and
>    build special version of cygwin1.dll which includes heap sanity
> checking.
>    To do it, just add --enable-malloc-debugging option to configure. Be
> warned,
>    however, that this version of dll is _very_ slow (10-100 times slower
> than
>    normal), so use it only when absolutely necessary.
> Brian
It was my understanding that if I write a C program and compiled it with 
gcc that gcc used newlib for all of the stdlib functions including 
malloc, realloc and free.

Unsubscribe info:
Problem reports:

More information about the Cygwin mailing list