search for: __real_malloc

Hi, I would like to wrap some of the library functions such as malloc() into for example: malloc_wrapper(int size) { malloc(size+4); //call the real malloc here } and have all uses of malloc replaced with malloc_wrapper. Is there a way to do that? -- ---------------- Barbora Murinová The University of Edinburgh SK: +421905718390 <+421%20905%20718%20390> UK: +447477833795

...ou are wrapping malloc. There will be a malloc seen at build time from libc, and all references to malloc will bind to it. Adding alternate names won’t stop that binding. Another way to do wrapping (using malloc as the example) is to: 1) introduce (pre-Resolver) an atom (call it X) that is named __real_malloc and has references: 1)to undefined _malloc and 2)undefined __wrap_malloc. 2) add a Pass which get X and looks at the reference to finds what the two references now point to (malloc and __wrap_malloc). It then walks the whole graph and changes references that point to malloc to point to __wrap_mall...

Hi Nick, This would work only if an alias is another name for the same symbol(weak symbols). If what is being aliased is another function definition, which is a non zero sized atom, aliasing will not work. I was thinking to model this for ELF for the below functionalities :- a) __wrap For example : --wrap fn What I plan to do here is, create a undefined function fn atom create a defined