Always correctly terminate main. Issue #588, PR #600.

SPIRV/GlslangToSpv.cpp

@@ -99,7 +99,7 @@ private:
 class TGlslangToSpvTraverser : public glslang::TIntermTraverser {
 public:
     TGlslangToSpvTraverser(const glslang::TIntermediate*, spv::SpvBuildLogger* logger);
-    virtual ~TGlslangToSpvTraverser();
+    virtual ~TGlslangToSpvTraverser() { }
 
     bool visitAggregate(glslang::TVisit, glslang::TIntermAggregate*);
     bool visitBinary(glslang::TVisit, glslang::TIntermBinary*);
@@ -111,6 +111,7 @@ public:
     bool visitLoop(glslang::TVisit, glslang::TIntermLoop*);
     bool visitBranch(glslang::TVisit visit, glslang::TIntermBranch*);
 
+    void finishSpv();
     void dumpSpv(std::vector<unsigned int>& out);
 
 protected:
@@ -896,27 +897,27 @@ TGlslangToSpvTraverser::TGlslangToSpvTraverser(const glslang::TIntermediate* gls
     default:
         break;
     }
-
 }
 
-// Finish everything and dump
-void TGlslangToSpvTraverser::dumpSpv(std::vector<unsigned int>& out)
+// Finish creating SPV, after the traversal is complete.
+void TGlslangToSpvTraverser::finishSpv()
 {
+    if (! mainTerminated) {
+        builder.setBuildPoint(shaderEntry->getLastBlock());
+        builder.leaveFunction();
+    }
+
     // finish off the entry-point SPV instruction by adding the Input/Output <id>
     for (auto it = iOSet.cbegin(); it != iOSet.cend(); ++it)
         entryPoint->addIdOperand(*it);
 
     builder.eliminateDeadDecorations();
-    builder.dump(out);
 }
 
-TGlslangToSpvTraverser::~TGlslangToSpvTraverser()
+// Write the SPV into 'out'.
+void TGlslangToSpvTraverser::dumpSpv(std::vector<unsigned int>& out)
 {
-    if (! mainTerminated) {
-        spv::Block* lastMainBlock = shaderEntry->getLastBlock();
-        builder.setBuildPoint(lastMainBlock);
-        builder.leaveFunction();
-    }
+    builder.dump(out);
 }
 
 //
@@ -5120,9 +5121,8 @@ void GlslangToSpv(const glslang::TIntermediate& intermediate, std::vector<unsign
     glslang::GetThreadPoolAllocator().push();
 
     TGlslangToSpvTraverser it(&intermediate, logger);
-
     root->traverse(&it);
-
+    it.finishSpv();
     it.dumpSpv(spirv);
 
     glslang::GetThreadPoolAllocator().pop();

Test/baseResults/hlsl.array.implicit-size.frag.out

@@ -234,6 +234,7 @@ gl_FragCoord origin is upper left
                               Store 18(g_array) 24
                               Store 28(g_array_unused) 31
                               Store 37(g_mystruct) 42
+                              Return
                               FunctionEnd
 12(main(struct-PS_OUTPUT-vf41;):           2 Function None 10
    11(ps_output):      9(ptr) FunctionParameter

Test/baseResults/hlsl.float1.frag.out

@@ -92,6 +92,7 @@ gl_FragCoord origin is upper left
                5:             Label
                               Store 14(f1) 15
                               Store 16(scalar) 17
+                              Return
                               FunctionEnd
 11(ShaderFunction(vf1;f1;):    6(float) Function None 8
      9(inFloat1):      7(ptr) FunctionParameter

Test/baseResults/hlsl.float4.frag.out

@@ -82,6 +82,7 @@ gl_FragCoord origin is upper left
               20:             TypePointer Uniform 7(fvec4)
 4(PixelShaderFunction):           2 Function None 3
                5:             Label
+                              Return
                               FunctionEnd
 11(ShaderFunction(vf4;):    7(fvec4) Function None 9
        10(input):      8(ptr) FunctionParameter

Test/baseResults/hlsl.intrinsics.vert.out

@@ -3011,6 +3011,7 @@ Shader version: 450
             1059:          76 ConstantComposite 1058 1058 1058 1058
 4(VertexShaderFunction):           2 Function None 3
                5:             Label
+                              Return
                               FunctionEnd
 16(VertexShaderFunctionS(f1;f1;f1;u1;u1;):    6(float) Function None 10
         11(inF0):      7(ptr) FunctionParameter

Test/baseResults/hlsl.layout.frag.out

@@ -119,6 +119,7 @@ gl_FragCoord origin is upper left
               38:     17(int) SpecConstant 10
          4(main):           2 Function None 3
                5:             Label
+                              Return
                               FunctionEnd
 11(PixelShaderFunction(vf4;):    7(fvec4) Function None 9
        10(input):      8(ptr) FunctionParameter

Test/baseResults/hlsl.matType.frag.out

@@ -90,6 +90,7 @@ gl_FragCoord origin is upper left
               29:     28(ptr) Variable Uniform
 4(PixelShaderFunction):           2 Function None 3
                5:             Label
+                              Return
                               FunctionEnd
 11(ShaderFunction(vf1;f1;):    6(float) Function None 8
      9(inFloat1):      7(ptr) FunctionParameter

Test/baseResults/hlsl.shapeConv.frag.out

@@ -282,6 +282,7 @@ gl_FragCoord origin is upper left
               62:             TypeVector 41(bool) 4
          4(main):           2 Function None 3
                5:             Label
+                              Return
                               FunctionEnd
 13(PixelShaderFunction(vf4;f1;):    7(fvec4) Function None 10
        11(input):      8(ptr) FunctionParameter

Test/baseResults/hlsl.swizzle.frag.out

@@ -106,6 +106,7 @@ gl_FragCoord origin is upper left
 4(PixelShaderFunction):           2 Function None 3
                5:             Label
                               Store 14(AmbientColor) 18
+                              Return
                               FunctionEnd
 11(ShaderFunction(vf4;):    7(fvec4) Function None 9
        10(input):      8(ptr) FunctionParameter

Test/baseResults/hlsl.typedef.frag.out

@@ -106,6 +106,7 @@ gl_FragCoord origin is upper left
               20:      9(int) Constant 2
 4(PixelShaderFunction):           2 Function None 3
                5:             Label
+                              Return
                               FunctionEnd
 14(ShaderFunction(vf4;i1;):    7(fvec4) Function None 11
        12(input):      8(ptr) FunctionParameter

glslang/Include/revision.h

@@ -2,5 +2,5 @@
 // For the version, it uses the latest git tag followed by the number of commits.
 // For the date, it uses the current date (when then script is run).
 
-#define GLSLANG_REVISION "Overload400-PrecQual.1650"
-#define GLSLANG_DATE "14-Nov-2016"
+#define GLSLANG_REVISION "Overload400-PrecQual.1659"
+#define GLSLANG_DATE "26-Nov-2016"