Fix the assert error and inbalence parens for SSBO

src/compiler/translator/ShaderStorageBlockOutputHLSL.h

@@ -10,6 +10,7 @@
 #ifndef COMPILER_TRANSLATOR_SHADERSTORAGEBLOCKOUTPUTHLSL_H_
 #define COMPILER_TRANSLATOR_SHADERSTORAGEBLOCKOUTPUTHLSL_H_
 
+#include <stack>
 #include "compiler/translator/ShaderStorageBlockFunctionHLSL.h"
 #include "compiler/translator/blocklayout.h"
 #include "compiler/translator/tree_util/IntermTraverse.h"
@@ -75,10 +76,11 @@ class ShaderStorageBlockOutputHLSL : public TIntermTraverser
     void writeEOpIndexDirectOrIndirectOutput(TInfoSinkBase &out, Visit visit, TIntermBinary *node);
     // Common part in dot operations.
     void writeDotOperatorOutput(TInfoSinkBase &out, const TField *field);
+    void collectShaderStorageBlocks(TIntermTyped *node);
 
     int mMatrixStride;
     bool mRowMajor;
-    bool mLocationAsTheLastArgument;
+    std::stack<SSBOMethod> mMethodTypeStack;
     OutputHLSL *mOutputHLSL;
     ShaderStorageBlockFunctionHLSL *mSSBOFunctionHLSL;
     ResourcesHLSL *mResourcesHLSL;

src/tests/gl_tests/ComputeShaderTest.cpp

@@ -2640,6 +2640,37 @@ void main()
     EXPECT_EQ(100u, outputValue);
 }
 
+// Test that the length of a struct buffer variable is supported.
+TEST_P(ComputeShaderTest, ShaderStorageBlocksStructLength)
+{
+    const char kCSSource[] = R"(#version 310 es
+layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
+
+struct Particle
+{
+    int len;
+};
+
+layout(binding = 0, std430) readonly buffer Buf1
+{
+    Particle particlesRead[];
+};
+
+layout(binding = 1, std430) buffer Buf2
+{
+    Particle particlesWrite[];
+};
+
+void main()
+{
+    int index = int(gl_GlobalInvocationID.x);
+    particlesWrite[index].len = particlesRead.length();
+})";
+
+    ANGLE_GL_COMPUTE_PROGRAM(program, kCSSource);
+    EXPECT_GL_NO_ERROR();
+}
+
 // Test that scalar buffer variables are supported.
 TEST_P(ComputeShaderTest, ShaderStorageBlocksScalar)
 {