Front end: Fix issue #374: put a limit on how big a type name can get.

Test/baseResults/430scope.vert.out

@@ -64,7 +64,7 @@ ERROR: node is still EOpNull!
 0:47          3.000000
 0:49      move second child to first child (temp 4-component vector of float)
 0:49        gl_Position: direct index for structure (invariant gl_Position 4-component vector of float Position)
-0:49          'anon@0' (out block{invariant gl_Position 4-component vector of float Position gl_Position, gl_PointSize float PointSize gl_PointSize, out implicitly-sized array of float ClipDistance gl_ClipDistance, gl_ClipVertex 4-component vector of float ClipVertex gl_ClipVertex, out 4-component vector of float FrontColor gl_FrontColor, out 4-component vector of float BackColor gl_BackColor, out 4-component vector of float FrontSecondaryColor gl_FrontSecondaryColor, out 4-component vector of float BackSecondaryColor gl_BackSecondaryColor, out implicitly-sized array of 4-component vector of float TexCoord gl_TexCoord, out float FogFragCoord gl_FogFragCoord})
+0:49          'anon@0' (out block{invariant gl_Position 4-component vector of float Position gl_Position, gl_PointSize float PointSize gl_PointSize, out implicitly-sized array of float ClipDistance gl_ClipDistance, gl_ClipVertex 4-component vector of float ClipVertex gl_ClipVertex, out 4-component vector of float FrontColor gl_FrontColor, out 4-component vector of float BackColor gl_BackColor, out 4-component vector of float FrontSecondaryColor gl_FrontSecondaryColor, out 4-component vector of float BackSecondaryColor gl_BackSecondaryColor, out implicitly-sized array of 4-component vector of float TexCoord gl_TexCoord, ...})
 0:49          Constant:
 0:49            0 (const uint)
 0:49        Construct vec4 (temp 4-component vector of float)

Test/baseResults/specExamples.vert.out

@@ -297,8 +297,8 @@ ERROR: node is still EOpNull!
 0:?     'b2' (layout(binding=2 ) uniform atomic_uint)
 0:?     'c2' (layout(binding=3 ) uniform atomic_uint)
 0:?     'd2' (layout(binding=2 ) uniform atomic_uint)
-0:?     'anon@5' (out block{invariant gl_Position 4-component vector of float Position gl_Position, gl_PointSize float PointSize gl_PointSize, out implicitly-sized array of float ClipDistance gl_ClipDistance, gl_ClipVertex 4-component vector of float ClipVertex gl_ClipVertex, flat out 4-component vector of float FrontColor gl_FrontColor, out 4-component vector of float BackColor gl_BackColor, out 4-component vector of float FrontSecondaryColor gl_FrontSecondaryColor, out 4-component vector of float BackSecondaryColor gl_BackSecondaryColor, out implicitly-sized array of 4-component vector of float TexCoord gl_TexCoord, out float FogFragCoord gl_FogFragCoord})
-0:?     'anon@5' (out block{invariant gl_Position 4-component vector of float Position gl_Position, gl_PointSize float PointSize gl_PointSize, out implicitly-sized array of float ClipDistance gl_ClipDistance, gl_ClipVertex 4-component vector of float ClipVertex gl_ClipVertex, flat out 4-component vector of float FrontColor gl_FrontColor, out 4-component vector of float BackColor gl_BackColor, out 4-component vector of float FrontSecondaryColor gl_FrontSecondaryColor, out 4-component vector of float BackSecondaryColor gl_BackSecondaryColor, out implicitly-sized array of 4-component vector of float TexCoord gl_TexCoord, out float FogFragCoord gl_FogFragCoord})
+0:?     'anon@5' (out block{invariant gl_Position 4-component vector of float Position gl_Position, gl_PointSize float PointSize gl_PointSize, out implicitly-sized array of float ClipDistance gl_ClipDistance, gl_ClipVertex 4-component vector of float ClipVertex gl_ClipVertex, flat out 4-component vector of float FrontColor gl_FrontColor, out 4-component vector of float BackColor gl_BackColor, out 4-component vector of float FrontSecondaryColor gl_FrontSecondaryColor, out 4-component vector of float BackSecondaryColor gl_BackSecondaryColor, out implicitly-sized array of 4-component vector of float TexCoord gl_TexCoord, ...})
+0:?     'anon@5' (out block{invariant gl_Position 4-component vector of float Position gl_Position, gl_PointSize float PointSize gl_PointSize, out implicitly-sized array of float ClipDistance gl_ClipDistance, gl_ClipVertex 4-component vector of float ClipVertex gl_ClipVertex, flat out 4-component vector of float FrontColor gl_FrontColor, out 4-component vector of float BackColor gl_BackColor, out 4-component vector of float FrontSecondaryColor gl_FrontSecondaryColor, out 4-component vector of float BackSecondaryColor gl_BackSecondaryColor, out implicitly-sized array of 4-component vector of float TexCoord gl_TexCoord, ...})
 0:?     'ColorInv' (smooth out 3-component vector of float)
 0:?     'Color4' (invariant centroid smooth out 3-component vector of float)
 0:?     'position' (noContraction smooth out 4-component vector of float)

glslang/Include/Types.h

@@ -1553,6 +1553,13 @@ public:
         if (structure) {
             s.append("{");
             for (size_t i = 0; i < structure->size(); ++i) {
+                if (s.size() > 3 * GlslangMaxTypeLength) {
+                    // If we are getting too long, cut it short,
+                    // just need to draw the line somewhere, as there is no limit to
+                    // how large a struct/block type can get.
+                    s.append("...");
+                    break;
+                }
                 if (! (*structure)[i].type->hiddenMember()) {
                     s.append((*structure)[i].type->getCompleteString());
                     s.append(" ");