afl_trace_pc fix

grimm-co · Jul 25, 2019 · ce84264 · ce84264
1 parent ad1c4bf
commit ce84264
Show file tree

Hide file tree

Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/docs/ChangeLog b/docs/ChangeLog
@@ -18,6 +18,7 @@ Version ++2.52d (dev):
 -----------------------------
 
   - unicorn_mode got added - thanks to domenukk for the patch!
+  - fix llvm_mode AFL_TRACE_PC with modern llvm
   - fix a crash in qemu_mode which also exists in stock afl
   - added libcompcov, a laf-intel implementation for qemu! :)
     see qemu_mode/libcompcov/README.libcompcov

diff --git a/llvm_mode/afl-clang-fast.c b/llvm_mode/afl-clang-fast.c
@@ -144,9 +144,10 @@ static void edit_params(u32 argc, char** argv) {
   // /laf
 
 #ifdef USE_TRACE_PC
-  cc_params[cc_par_cnt++] = "-fsanitize-coverage=trace-pc-guard";
-  cc_params[cc_par_cnt++] = "-mllvm";
-  cc_params[cc_par_cnt++] = "-sanitizer-coverage-block-threshold=0";
+  cc_params[cc_par_cnt++] = "-fsanitize-coverage=trace-pc-guard"; // edge coverage by default
+  //cc_params[cc_par_cnt++] = "-mllvm";
+  //cc_params[cc_par_cnt++] = "-fsanitize-coverage=trace-cmp,trace-div,trace-gep";
+  //cc_params[cc_par_cnt++] = "-sanitizer-coverage-block-threshold=0";
 #else
   cc_params[cc_par_cnt++] = "-Xclang";
   cc_params[cc_par_cnt++] = "-load";