1 files changed, 10 insertions, 0 deletions
diff --git a/llvm_mode/afl-clang-fast.c b/llvm_mode/afl-clang-fast.c
index c0471033..5abe61c6 100644
--- a/llvm_mode/afl-clang-fast.c
+++ b/llvm_mode/afl-clang-fast.c
@@ -796,6 +796,16 @@ int main(int argc, char **argv, char **envp) {
 
   }
 
+  u8 *ptr2;
+  if (!be_quiet && instrument_mode != INSTRUMENT_LTO &&
+      ((ptr2 = getenv("AFL_MAP_SIZE")) || (ptr2 = getenv("AFL_MAPSIZE")))) {
+
+    u32 map_size = atoi(ptr2);
+    if (map_size != MAP_SIZE)
+      FATAL("AFL_MAP_SIZE is not supported by afl-clang-fast");
+
+  }
+
   if (debug) {
 
     SAYF(cMGN "[D]" cRST " cd \"%s\";", getthecwd());