diff --git a/hecl/extern/boo b/hecl/extern/boo
index 45db327fb..1c21519d5 160000
--- a/hecl/extern/boo
+++ b/hecl/extern/boo
@@ -1 +1 @@
-Subproject commit 45db327fb32238e0c435d272d00f1f82dbca0493
+Subproject commit 1c21519d5dcd41fbabd11b9db0d0d6ffa99c8368
diff --git a/hecl/lib/Backend/GX.cpp b/hecl/lib/Backend/GX.cpp
index 80eed9878..304a4feea 100644
--- a/hecl/lib/Backend/GX.cpp
+++ b/hecl/lib/Backend/GX.cpp
@@ -325,6 +325,7 @@ GX::TraceResult GX::RecursiveTraceColor(const IR& ir, Diagnostics& diag, const I
     }
 
     diag.reportBackendErr(inst.m_loc, "unable to convert arithmetic to TEV stage");
+    break;
   }
   case IR::OpType::Swizzle: {
     if (inst.m_swizzle.m_idxs[0] == 3 && inst.m_swizzle.m_idxs[1] == 3 && inst.m_swizzle.m_idxs[2] == 3 &&
@@ -335,6 +336,7 @@ GX::TraceResult GX::RecursiveTraceColor(const IR& ir, Diagnostics& diag, const I
       return RecursiveTraceColor(ir, diag, cInst, true);
     } else
       diag.reportBackendErr(inst.m_loc, "only alpha extract may be performed with swizzle operation");
+    break;
   }
   default:
     diag.reportBackendErr(inst.m_loc, "invalid color op");
@@ -573,6 +575,7 @@ GX::TraceResult GX::RecursiveTraceAlpha(const IR& ir, Diagnostics& diag, const I
     }
 
     diag.reportBackendErr(inst.m_loc, "unable to convert arithmetic to TEV stage");
+    break;
   }
   case IR::OpType::Swizzle: {
     if (inst.m_swizzle.m_idxs[0] == 3 && inst.m_swizzle.m_idxs[1] == 3 && inst.m_swizzle.m_idxs[2] == 3 &&
@@ -583,6 +586,7 @@ GX::TraceResult GX::RecursiveTraceAlpha(const IR& ir, Diagnostics& diag, const I
       return RecursiveTraceAlpha(ir, diag, cInst);
     } else
       diag.reportBackendErr(inst.m_loc, "only alpha extract may be performed with swizzle operation");
+    break;
   }
   default:
     diag.reportBackendErr(inst.m_loc, "invalid alpha op");
diff --git a/hecl/lib/Backend/ProgrammableCommon.cpp b/hecl/lib/Backend/ProgrammableCommon.cpp
index ddb9ee754..bd1d952b4 100644
--- a/hecl/lib/Backend/ProgrammableCommon.cpp
+++ b/hecl/lib/Backend/ProgrammableCommon.cpp
@@ -160,6 +160,7 @@ std::string ProgrammableCommon::RecursiveTraceColor(const IR& ir, Diagnostics& d
     default:
       diag.reportBackendErr(inst.m_loc, "invalid arithmetic op");
     }
+    break;
   }
   case IR::OpType::Swizzle: {
     const IR::Instruction& aInst = inst.getChildInst(ir, 0);
@@ -179,7 +180,7 @@ std::string ProgrammableCommon::RecursiveTraceAlpha(const IR& ir, Diagnostics& d
   case IR::OpType::Call: {
     const std::string& name = inst.m_call.m_name;
     bool normalize = false;
-    if (!name.compare("Texture") || (normalize = true && !name.compare("TextureN"))) {
+    if (!name.compare("Texture") || ((normalize = true) && !name.compare("TextureN"))) {
       if (inst.getChildCount() < 2)
         diag.reportBackendErr(inst.m_loc, "Texture(map, texgen) requires 2 arguments");
 
@@ -230,6 +231,7 @@ std::string ProgrammableCommon::RecursiveTraceAlpha(const IR& ir, Diagnostics& d
     default:
       diag.reportBackendErr(inst.m_loc, "invalid arithmetic op");
     }
+    break;
   }
   case IR::OpType::Swizzle: {
     const IR::Instruction& aInst = inst.getChildInst(ir, 0);
diff --git a/hecl/lib/hecl.cpp b/hecl/lib/hecl.cpp
index 095e78cf0..f85c1baef 100644
--- a/hecl/lib/hecl.cpp
+++ b/hecl/lib/hecl.cpp
@@ -423,6 +423,7 @@ hecl::DirectoryEnumerator::DirectoryEnumerator(SystemStringView path, Mode mode,
     if (mode == Mode::DirsSorted)
       break;
     rewinddir(dir);
+    [[fallthrough]];
   }
   case Mode::FilesSorted: {
     if (mode == Mode::FilesSorted)