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...c seen at build time from libc, and all references to malloc will bind to it. Adding alternate names won’t stop that binding. Yes, thats how ld is behaving, if I have the the function in my .o's, it doesnot override. For example :- #include <stdio.h> int myfn() { return 0; } void __wrap_myfn() { printf("Hello World\n"); } int main() { myfn(); return 0; } $gcc wrap.c -Wl,--wrap,fn $./a.out $ Thanks Shankar Easwaran -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation -------------- next part -------------- An HTML...

...malloc will bind to it. Adding alternate names won’t stop that binding. > Yes, thats how ld is behaving, if I have the the function in my .o's, it doesnot override. > > For example :- > > #include <stdio.h> > > int myfn() { > return 0; > } > > void __wrap_myfn() > { > printf("Hello World\n"); > } > > int main() { > myfn(); > return 0; > } > $gcc wrap.c -Wl,--wrap,fn > $./a.out > $ > > Thanks > > Shankar Easwaran > > -- > Qualcomm Innovation Center, Inc. is a member of Code Aurora...

On Sep 13, 2013, at 3:35 PM, Shankar Easwaran <shankare at codeaurora.org> wrote: > This would work only if an alias is another name for the same symbol(weak symbols). I don’t know what that means. Can you clarify? > > If what is being aliased is another function definition, which is a non zero sized atom, aliasing will not work. That is the exact scenario I think it *will* work

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