Tests: Increase testing around incorrect use of block names and instances.
diff --git a/Test/300block.frag b/Test/300block.frag
index 9556a7c..e665b5e 100644
--- a/Test/300block.frag
+++ b/Test/300block.frag
@@ -43,4 +43,16 @@
 {
     texture(s.sampler, vec3(inst.ni, bv.y, insts[2].nbv.z));
     insts[s.v.x];         // ERROR
+    fooBlock;             // ERROR
+    mat4(s);              // ERROR
+    int insts;
+    float barBlock;
+    mat4(barBlock);
+    mat4(unreferenced);   // ERROR, bad type
+    ++s;                  // ERROR
+    inst - 1;             // ERROR
+    ++barBlock;
+    2 * barBlockArray;    // ERROR
 }
+
+int fooBlock;             // ERROR, redef.
diff --git a/Test/baseResults/300block.frag.out b/Test/baseResults/300block.frag.out
index b787964..4756e66 100644
--- a/Test/baseResults/300block.frag.out
+++ b/Test/baseResults/300block.frag.out
@@ -3,7 +3,19 @@
 ERROR: 0:21: '' : cannot nest a structure definition inside a structure or block 

 ERROR: 0:20: 'sampler' : member of block cannot be a sampler type 

 ERROR: 0:45: 'variable indexing uniform block array' : not supported for this version or the enabled extensions 

-ERROR: 4 compilation errors.  No code generated.

+ERROR: 0:46: 'fooBlock' : cannot be used (maybe an instance name is needed) 

+ERROR: 0:46: 'fooBlock' : undeclared identifier 

+ERROR: 0:47: 'constructor' : not enough data provided for construction 

+ERROR: 0:51: 'unreferenced' : cannot be used (maybe an instance name is needed) 

+ERROR: 0:51: 'unreferenced' : undeclared identifier 

+ERROR: 0:52: '++' :  l-value required "s" (can't modify a uniform)

+ERROR: 0:52: '++' :  wrong operand type no operation '++' exists that takes an operand of type uniform structure{global mediump 4-component vector of float u, global mediump 4-component vector of uint v, global lowp isampler3D sampler, global mediump 3-component vector of float w, global structure{global mediump int a} t} (or there is no acceptable conversion)

+ERROR: 0:53: '-' :  wrong operand types: no operation '-' exists that takes a left-hand operand of type 'layout(column_major shared ) uniform block{layout(column_major shared ) uniform mediump 4-component vector of uint nbv, layout(column_major shared ) uniform mediump int ni}' and a right operand of type 'const int' (or there is no acceptable conversion)

+ERROR: 0:55: 'barBlockArray' : cannot be used (maybe an instance name is needed) 

+ERROR: 0:55: 'barBlockArray' : undeclared identifier 

+ERROR: 0:55: '*' :  wrong operand types: no operation '*' exists that takes a left-hand operand of type 'const int' and a right operand of type 'temp float' (or there is no acceptable conversion)

+ERROR: 0:58: 'fooBlock' : redefinition 

+ERROR: 16 compilation errors.  No code generated.

 

 

 Shader version: 300

@@ -50,6 +62,19 @@
 0:45              1 (const int)

 0:45          Constant:

 0:45            0 (const int)

+0:46      'fooBlock' (temp float)

+0:47      Constant:

+0:47        0.000000

+0:50      Construct mat4 (temp 4X4 matrix of float)

+0:50        'barBlock' (temp mediump float)

+0:51      Construct mat4 (temp 4X4 matrix of float)

+0:51        'unreferenced' (temp float)

+0:52      's' (uniform structure{global mediump 4-component vector of float u, global mediump 4-component vector of uint v, global lowp isampler3D sampler, global mediump 3-component vector of float w, global structure{global mediump int a} t})

+0:53      'inst' (layout(column_major shared ) uniform block{layout(column_major shared ) uniform mediump 4-component vector of uint nbv, layout(column_major shared ) uniform mediump int ni})

+0:54      Pre-Increment (temp mediump float)

+0:54        'barBlock' (temp mediump float)

+0:55      Constant:

+0:55        2 (const int)

 0:?   Linker Objects

 0:?     's' (uniform structure{global mediump 4-component vector of float u, global mediump 4-component vector of uint v, global lowp isampler3D sampler, global mediump 3-component vector of float w, global structure{global mediump int a} t})

 0:?     'anon@0' (layout(column_major shared ) uniform block{layout(column_major shared ) uniform mediump 4-component vector of uint bv, layout(column_major shared ) uniform mediump 2X2 matrix of float bm2, layout(column_major shared ) uniform lowp isampler2D sampler, layout(column_major shared ) uniform structure{global mediump int a} t, layout(column_major shared ) uniform structure{global mediump 4-component vector of float u, global mediump 4-component vector of uint v, global lowp isampler3D sampler, global mediump 3-component vector of float w, global structure{global mediump int a} t} fbs})

@@ -105,6 +130,19 @@
 0:45              1 (const int)

 0:45          Constant:

 0:45            0 (const int)

+0:46      'fooBlock' (temp float)

+0:47      Constant:

+0:47        0.000000

+0:50      Construct mat4 (temp 4X4 matrix of float)

+0:50        'barBlock' (temp mediump float)

+0:51      Construct mat4 (temp 4X4 matrix of float)

+0:51        'unreferenced' (temp float)

+0:52      's' (uniform structure{global mediump 4-component vector of float u, global mediump 4-component vector of uint v, global lowp isampler3D sampler, global mediump 3-component vector of float w, global structure{global mediump int a} t})

+0:53      'inst' (layout(column_major shared ) uniform block{layout(column_major shared ) uniform mediump 4-component vector of uint nbv, layout(column_major shared ) uniform mediump int ni})

+0:54      Pre-Increment (temp mediump float)

+0:54        'barBlock' (temp mediump float)

+0:55      Constant:

+0:55        2 (const int)

 0:?   Linker Objects

 0:?     's' (uniform structure{global mediump 4-component vector of float u, global mediump 4-component vector of uint v, global lowp isampler3D sampler, global mediump 3-component vector of float w, global structure{global mediump int a} t})

 0:?     'anon@0' (layout(column_major shared ) uniform block{layout(column_major shared ) uniform mediump 4-component vector of uint bv, layout(column_major shared ) uniform mediump 2X2 matrix of float bm2, layout(column_major shared ) uniform lowp isampler2D sampler, layout(column_major shared ) uniform structure{global mediump int a} t, layout(column_major shared ) uniform structure{global mediump 4-component vector of float u, global mediump 4-component vector of uint v, global lowp isampler3D sampler, global mediump 3-component vector of float w, global structure{global mediump int a} t} fbs})