Commits on Jul 5, 2021

1. afl-clang-fast: modify edit_params() to handle '-r' parameters for pa… …

   …rtial linking
   
   There is a case that AFL cannot compile busybox. It is because the
   building system of busybox uses the partial linking feature of ld
   while the afl-clang-fast cannot handle such case.
   
   More specifically, the building system of busybox first merges several
   relocatable object file into a new relocatable file using the '-r'
   option, where the afl-llvm-rt.o added by afl-clang-fast is also merged,
   so the new relocatable file contains the symbols from afl-llvm-rt.o.
   At the final linking step, the new relocatable file is linked with
   afl-llvm-rt.o (added again by afl-clang-fast) into the executable file,
   but both files contain the definitions of the symbols from afl-llvm-rt.o.
   As a result, the compiler complains that and stop the building process.
   
   I fix this by restraining afl-clang-fast from adding the 'afl-llvm-rt.o'
   parameter when seeing the '-r', '-Wl,-r', or '-Wl,-i' in the cmd line.

   

   QinlinChen committed Jul 5, 2021
   Configuration menu

   • View commit details
   • Copy full SHA for 5635365
   • Browse repository at this point

   Copy the full SHA

   5635365 View commit details

   Browse the repository at this point in the history