diff --git a/lld/MachO/InputFiles.cpp b/lld/MachO/InputFiles.cpp
--- a/lld/MachO/InputFiles.cpp
+++ b/lld/MachO/InputFiles.cpp
@@ -563,7 +563,7 @@
     if (section == sections.end())
       return;
     ++subsection;
-    if (subsection == (*section)->subsections.end()) {
+    while (subsection == (*section)->subsections.end()) {
       ++section;
       if (section == sections.end())
         return;
@@ -585,6 +585,7 @@
         if (section == sections.end())
           break;
         updateAddr();
+        assert(hintStart->offset0 >= subsectionBase);
       }
     }
 
diff --git a/lld/test/MachO/loh-parsing.s b/lld/test/MachO/loh-parsing.s
new file mode 100644
--- /dev/null
+++ b/lld/test/MachO/loh-parsing.s
@@ -0,0 +1,20 @@
+# REQUIRES: aarch64
+
+# RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin %s -o %t.o
+# RUN: %lld -arch arm64 -dylib %t.o -o /dev/null
+
+## Check that we parse the LOH / match it to its referent sections correctly,
+## even when there are other subsections that don't get parsed as regular
+## sections. (We would previously segfault.)
+## `__debug_info` is one such section that gets special-case handling.
+
+.text
+_foo:
+
+.section __DWARF,__debug_info,regular,debug
+
+.section __TEXT,__StaticInit
+L1:  adrp  x1, _foo@PAGE
+L2:  ldr   x1, [x1, _foo@PAGEOFF]
+
+.loh AdrpLdr L1, L2