diff --git a/.custom-format.py b/.custom-format.py
index d07c26dfb..1295ce556 100755
--- a/.custom-format.py
+++ b/.custom-format.py
@@ -40,7 +40,7 @@ def check_clang_format_pip_version():
     if importlib.util.find_spec('clang_format'):
         # Check if the installed version is the expected LLVM version
         if importlib.metadata.version('clang-format')\
-                .startswith(CURRENT_LLVM+'.'):
+                .startswith(str(CURRENT_LLVM)+'.'):
             return True
         else:
             # Return False, because the clang-format version does not match
diff --git a/instrumentation/SanitizerCoverageLTO.so.cc b/instrumentation/SanitizerCoverageLTO.so.cc
index f82224ed9..85f13c190 100644
--- a/instrumentation/SanitizerCoverageLTO.so.cc
+++ b/instrumentation/SanitizerCoverageLTO.so.cc
@@ -1787,14 +1787,16 @@ static void registerLTOPass(const PassManagerBuilder &,
 
 }
 
+#if LLVM_VERSION_MAJOR < 16
 static RegisterStandardPasses RegisterCompTransPass(
     PassManagerBuilder::EP_OptimizerLast, registerLTOPass);
 
 static RegisterStandardPasses RegisterCompTransPass0(
     PassManagerBuilder::EP_EnabledOnOptLevel0, registerLTOPass);
 
-#if LLVM_VERSION_MAJOR >= 11
+  #if LLVM_VERSION_MAJOR >= 11
 static RegisterStandardPasses RegisterCompTransPassLTO(
     PassManagerBuilder::EP_FullLinkTimeOptimizationLast, registerLTOPass);
+  #endif
 #endif
 
diff --git a/src/afl-as.c b/src/afl-as.c
index a0eb612fd..772e31b3e 100644
--- a/src/afl-as.c
+++ b/src/afl-as.c
@@ -93,7 +93,7 @@ static u8 use_64bit = 0;
 static void edit_params(int argc, char **argv) {
 
   u8 *tmp_dir = getenv("TMPDIR"), *afl_as = getenv("AFL_AS");
-  u32 i;
+  u32 i, input_index;
 
 #ifdef __APPLE__
 
@@ -142,7 +142,23 @@ static void edit_params(int argc, char **argv) {
 
   as_params[argc] = 0;
 
-  for (i = 1; (s32)i < argc - 1; i++) {
+  /* Find the input file.  It's usually located near the end.
+     Assume there won't be any arguments referring to files after the input
+     file, e.g. as input.s -o output.o */
+  for (input_index = argc - 1; input_index > 0; input_index--) {
+
+    input_file = argv[input_index];
+    /* Clang may add debug arguments after the input file. */
+    if (strncmp(input_file, "-g", 2)) break;
+
+  }
+
+  if (input_index == 0)
+    FATAL("Could not find input file (not called through afl-gcc?)");
+
+  for (i = 1; (s32)i < argc; i++) {
+
+    if (i == input_index) continue;
 
     if (!strcmp(argv[i], "--64")) {
 
@@ -194,8 +210,6 @@ static void edit_params(int argc, char **argv) {
 
 #endif                                                         /* __APPLE__ */
 
-  input_file = argv[argc - 1];
-
   if (input_file[0] == '-') {
 
     if (!strcmp(input_file + 1, "-version")) {