diff --git a/Test/440.vert b/Test/440.vert
index bfcdfd28..2e61f797 100644
--- a/Test/440.vert
+++ b/Test/440.vert
@@ -73,6 +73,9 @@ layout(location = 56, component = 1) out vec2 df2o;
 layout(location = 56, component = 3) out float sf2o;
 layout(location = 57, component = 2) out vec2 dv3o;
 layout(location = 57, component = 3) out float sf4o;     // ERROR, overlapping component
+layout(location=58) out flat dvec3 dv3o2;                // uses part of location 59
+layout(location=59, component=2) out flat double dfo3;   // okay, fits
+layout(location=59, component=0) out flat double dfo4;   // ERROR, overlaps the dvec3 in starting in 58
 
 out bblck1 {
     vec4 bbv;
diff --git a/Test/baseResults/440.vert.out b/Test/baseResults/440.vert.out
index d4cbb0b5..3c0a1200 100644
--- a/Test/baseResults/440.vert.out
+++ b/Test/baseResults/440.vert.out
@@ -23,74 +23,76 @@ ERROR: 0:66: 'component' : doubles cannot start on an odd-numbered component
 ERROR: 0:67: 'component' : type overflows the available 4 components 
 ERROR: 0:71: 'location' : overlapping use of location 55
 ERROR: 0:75: 'location' : overlapping use of location 57
-ERROR: 0:92: 'xfb layout qualifier' : can only be used on an output 
-ERROR: 0:98: 'xfb_offset' : cannot declare a default, use a full declaration 
-ERROR: 0:108: 'xfb_buffer' : member cannot contradict block (or what block inherited from global) 
-ERROR: 0:113: 'xfb_buffer' : member cannot contradict block (or what block inherited from global) 
-ERROR: 0:113: 'xfb_offset' : overlapping offsets at offset 32 in buffer 3
-ERROR: 0:114: 'xfb_offset' : overlapping offsets at offset 0 in buffer 2
-ERROR: 0:116: 'xfb_offset' : overlapping offsets at offset 24 in buffer 2
-ERROR: 0:119: 'xfb_stride' : all stride settings must match for xfb buffer 15
-ERROR: 0:123: 'xfb_offset' : overlapping offsets at offset 4 in buffer 1
-ERROR: 0:125: 'xfb_stride' : all stride settings must match for xfb buffer 3
-ERROR: 0:126: 'xfb_stride' : all stride settings must match for xfb buffer 3
-ERROR: 0:130: 'xfb_stride' : all stride settings must match for xfb buffer 3
+ERROR: 0:77: 'location' : overlapping use of location 59
+ERROR: 0:78: 'location' : overlapping use of location 59
+ERROR: 0:95: 'xfb layout qualifier' : can only be used on an output 
+ERROR: 0:101: 'xfb_offset' : cannot declare a default, use a full declaration 
+ERROR: 0:111: 'xfb_buffer' : member cannot contradict block (or what block inherited from global) 
+ERROR: 0:116: 'xfb_buffer' : member cannot contradict block (or what block inherited from global) 
+ERROR: 0:116: 'xfb_offset' : overlapping offsets at offset 32 in buffer 3
+ERROR: 0:117: 'xfb_offset' : overlapping offsets at offset 0 in buffer 2
+ERROR: 0:119: 'xfb_offset' : overlapping offsets at offset 24 in buffer 2
+ERROR: 0:122: 'xfb_stride' : all stride settings must match for xfb buffer 15
+ERROR: 0:126: 'xfb_offset' : overlapping offsets at offset 4 in buffer 1
 ERROR: 0:128: 'xfb_stride' : all stride settings must match for xfb buffer 3
-ERROR: 0:149: 'xfb_offset' : overlapping offsets at offset 64 in buffer 0
-ERROR: 0:154: 'xfb_buffer' : buffer is too large: gl_MaxTransformFeedbackBuffers is 4
-ERROR: 0:155: 'xfb_offset' : must be a multiple of size of first component 
-ERROR: 0:156: 'xfb_offset' : type contains double; xfb_offset must be a multiple of 8 
+ERROR: 0:129: 'xfb_stride' : all stride settings must match for xfb buffer 3
+ERROR: 0:133: 'xfb_stride' : all stride settings must match for xfb buffer 3
+ERROR: 0:131: 'xfb_stride' : all stride settings must match for xfb buffer 3
+ERROR: 0:152: 'xfb_offset' : overlapping offsets at offset 64 in buffer 0
+ERROR: 0:157: 'xfb_buffer' : buffer is too large: gl_MaxTransformFeedbackBuffers is 4
 ERROR: 0:158: 'xfb_offset' : must be a multiple of size of first component 
 ERROR: 0:159: 'xfb_offset' : type contains double; xfb_offset must be a multiple of 8 
-ERROR: 0:163: 'xfb_buffer' : buffer is too large: gl_MaxTransformFeedbackBuffers is 4
+ERROR: 0:161: 'xfb_offset' : must be a multiple of size of first component 
+ERROR: 0:162: 'xfb_offset' : type contains double; xfb_offset must be a multiple of 8 
 ERROR: 0:166: 'xfb_buffer' : buffer is too large: gl_MaxTransformFeedbackBuffers is 4
-ERROR: 0:166: 'xfb_stride' : 1/4 stride is too large: gl_MaxTransformFeedbackInterleavedComponents is 64
-ERROR: 0:168: 'xfb_buffer' : buffer is too large: gl_MaxTransformFeedbackBuffers is 4
-ERROR: 0:176: 'gl_BaseVertexARB' : required extension not requested: GL_ARB_shader_draw_parameters
-ERROR: 0:176: 'gl_BaseInstanceARB' : required extension not requested: GL_ARB_shader_draw_parameters
-ERROR: 0:176: 'gl_DrawIDARB' : required extension not requested: GL_ARB_shader_draw_parameters
-ERROR: 0:184: 'assign' :  l-value required "gl_BaseVertexARB" (can't modify shader input)
-ERROR: 0:185: 'assign' :  l-value required "gl_BaseInstanceARB" (can't modify shader input)
-ERROR: 0:186: 'assign' :  l-value required "gl_DrawIDARB" (can't modify shader input)
-ERROR: 0:187: 'glBaseInstanceARB' : undeclared identifier 
-ERROR: 53 compilation errors.  No code generated.
+ERROR: 0:169: 'xfb_buffer' : buffer is too large: gl_MaxTransformFeedbackBuffers is 4
+ERROR: 0:169: 'xfb_stride' : 1/4 stride is too large: gl_MaxTransformFeedbackInterleavedComponents is 64
+ERROR: 0:171: 'xfb_buffer' : buffer is too large: gl_MaxTransformFeedbackBuffers is 4
+ERROR: 0:179: 'gl_BaseVertexARB' : required extension not requested: GL_ARB_shader_draw_parameters
+ERROR: 0:179: 'gl_BaseInstanceARB' : required extension not requested: GL_ARB_shader_draw_parameters
+ERROR: 0:179: 'gl_DrawIDARB' : required extension not requested: GL_ARB_shader_draw_parameters
+ERROR: 0:187: 'assign' :  l-value required "gl_BaseVertexARB" (can't modify shader input)
+ERROR: 0:188: 'assign' :  l-value required "gl_BaseInstanceARB" (can't modify shader input)
+ERROR: 0:189: 'assign' :  l-value required "gl_DrawIDARB" (can't modify shader input)
+ERROR: 0:190: 'glBaseInstanceARB' : undeclared identifier 
+ERROR: 55 compilation errors.  No code generated.
 
 
 Shader version: 440
 Requested GL_ARB_shader_draw_parameters
 in xfb mode
 ERROR: node is still EOpNull!
-0:174  Function Definition: drawParamsBad( (global int)
-0:174    Function Parameters: 
-0:176    Sequence
-0:176      Branch: Return with expression
-0:176        add (temp int)
-0:176          add (temp int)
-0:176            'gl_BaseVertexARB' (in int BaseVertex)
-0:176            'gl_BaseInstanceARB' (in int BaseInstance)
-0:176          'gl_DrawIDARB' (in int DrawId)
-0:181  Function Definition: drawParams( (global int)
-0:181    Function Parameters: 
-0:183    Sequence
-0:183      Branch: Return with expression
-0:183        add (temp int)
-0:183          add (temp int)
-0:183            'gl_BaseVertexARB' (in int BaseVertex)
-0:183            'gl_BaseInstanceARB' (in int BaseInstance)
-0:183          'gl_DrawIDARB' (in int DrawId)
-0:184      move second child to first child (temp int)
-0:184        'gl_BaseVertexARB' (in int BaseVertex)
-0:184        Constant:
-0:184          3 (const int)
-0:185      move second child to first child (temp int)
-0:185        'gl_BaseInstanceARB' (in int BaseInstance)
-0:185        Constant:
-0:185          3 (const int)
-0:186      move second child to first child (temp int)
-0:186        'gl_DrawIDARB' (in int DrawId)
-0:186        Constant:
-0:186          3 (const int)
-0:187      'glBaseInstanceARB' (temp float)
+0:177  Function Definition: drawParamsBad( (global int)
+0:177    Function Parameters: 
+0:179    Sequence
+0:179      Branch: Return with expression
+0:179        add (temp int)
+0:179          add (temp int)
+0:179            'gl_BaseVertexARB' (in int BaseVertex)
+0:179            'gl_BaseInstanceARB' (in int BaseInstance)
+0:179          'gl_DrawIDARB' (in int DrawId)
+0:184  Function Definition: drawParams( (global int)
+0:184    Function Parameters: 
+0:186    Sequence
+0:186      Branch: Return with expression
+0:186        add (temp int)
+0:186          add (temp int)
+0:186            'gl_BaseVertexARB' (in int BaseVertex)
+0:186            'gl_BaseInstanceARB' (in int BaseInstance)
+0:186          'gl_DrawIDARB' (in int DrawId)
+0:187      move second child to first child (temp int)
+0:187        'gl_BaseVertexARB' (in int BaseVertex)
+0:187        Constant:
+0:187          3 (const int)
+0:188      move second child to first child (temp int)
+0:188        'gl_BaseInstanceARB' (in int BaseInstance)
+0:188        Constant:
+0:188          3 (const int)
+0:189      move second child to first child (temp int)
+0:189        'gl_DrawIDARB' (in int DrawId)
+0:189        Constant:
+0:189          3 (const int)
+0:190      'glBaseInstanceARB' (temp float)
 0:?   Linker Objects
 0:?     'a' (layout(location=2 component=2 ) in 2-component vector of float)
 0:?     'b' (layout(location=2 component=1 ) in float)
@@ -133,6 +135,9 @@ ERROR: node is still EOpNull!
 0:?     'sf2o' (layout(location=56 component=3 ) smooth out float)
 0:?     'dv3o' (layout(location=57 component=2 ) smooth out 2-component vector of float)
 0:?     'sf4o' (layout(location=57 component=3 ) smooth out float)
+0:?     'dv3o2' (layout(location=58 ) flat out 3-component vector of double)
+0:?     'dfo3' (layout(location=59 component=2 ) flat out double)
+0:?     'dfo4' (layout(location=59 component=0 ) flat out double)
 0:?     'bbinst1' (out block{out 4-component vector of float bbv})
 0:?     'bbinst2' (out block{layout(xfb_buffer=0 xfb_offset=64 ) out 4-component vector of float bbv})
 0:?     'bbinst3' (out block{layout(xfb_buffer=3 xfb_offset=16 ) out 4-component vector of float bbv})
@@ -170,37 +175,37 @@ Shader version: 440
 Requested GL_ARB_shader_draw_parameters
 in xfb mode
 ERROR: node is still EOpNull!
-0:174  Function Definition: drawParamsBad( (global int)
-0:174    Function Parameters: 
-0:176    Sequence
-0:176      Branch: Return with expression
-0:176        add (temp int)
-0:176          add (temp int)
-0:176            'gl_BaseVertexARB' (in int BaseVertex)
-0:176            'gl_BaseInstanceARB' (in int BaseInstance)
-0:176          'gl_DrawIDARB' (in int DrawId)
-0:181  Function Definition: drawParams( (global int)
-0:181    Function Parameters: 
-0:183    Sequence
-0:183      Branch: Return with expression
-0:183        add (temp int)
-0:183          add (temp int)
-0:183            'gl_BaseVertexARB' (in int BaseVertex)
-0:183            'gl_BaseInstanceARB' (in int BaseInstance)
-0:183          'gl_DrawIDARB' (in int DrawId)
-0:184      move second child to first child (temp int)
-0:184        'gl_BaseVertexARB' (in int BaseVertex)
-0:184        Constant:
-0:184          3 (const int)
-0:185      move second child to first child (temp int)
-0:185        'gl_BaseInstanceARB' (in int BaseInstance)
-0:185        Constant:
-0:185          3 (const int)
-0:186      move second child to first child (temp int)
-0:186        'gl_DrawIDARB' (in int DrawId)
-0:186        Constant:
-0:186          3 (const int)
-0:187      'glBaseInstanceARB' (temp float)
+0:177  Function Definition: drawParamsBad( (global int)
+0:177    Function Parameters: 
+0:179    Sequence
+0:179      Branch: Return with expression
+0:179        add (temp int)
+0:179          add (temp int)
+0:179            'gl_BaseVertexARB' (in int BaseVertex)
+0:179            'gl_BaseInstanceARB' (in int BaseInstance)
+0:179          'gl_DrawIDARB' (in int DrawId)
+0:184  Function Definition: drawParams( (global int)
+0:184    Function Parameters: 
+0:186    Sequence
+0:186      Branch: Return with expression
+0:186        add (temp int)
+0:186          add (temp int)
+0:186            'gl_BaseVertexARB' (in int BaseVertex)
+0:186            'gl_BaseInstanceARB' (in int BaseInstance)
+0:186          'gl_DrawIDARB' (in int DrawId)
+0:187      move second child to first child (temp int)
+0:187        'gl_BaseVertexARB' (in int BaseVertex)
+0:187        Constant:
+0:187          3 (const int)
+0:188      move second child to first child (temp int)
+0:188        'gl_BaseInstanceARB' (in int BaseInstance)
+0:188        Constant:
+0:188          3 (const int)
+0:189      move second child to first child (temp int)
+0:189        'gl_DrawIDARB' (in int DrawId)
+0:189        Constant:
+0:189          3 (const int)
+0:190      'glBaseInstanceARB' (temp float)
 0:?   Linker Objects
 0:?     'a' (layout(location=2 component=2 ) in 2-component vector of float)
 0:?     'b' (layout(location=2 component=1 ) in float)
@@ -243,6 +248,9 @@ ERROR: node is still EOpNull!
 0:?     'sf2o' (layout(location=56 component=3 ) smooth out float)
 0:?     'dv3o' (layout(location=57 component=2 ) smooth out 2-component vector of float)
 0:?     'sf4o' (layout(location=57 component=3 ) smooth out float)
+0:?     'dv3o2' (layout(location=58 ) flat out 3-component vector of double)
+0:?     'dfo3' (layout(location=59 component=2 ) flat out double)
+0:?     'dfo4' (layout(location=59 component=0 ) flat out double)
 0:?     'bbinst1' (out block{out 4-component vector of float bbv})
 0:?     'bbinst2' (out block{layout(xfb_buffer=0 xfb_offset=64 ) out 4-component vector of float bbv})
 0:?     'bbinst3' (out block{layout(xfb_buffer=3 xfb_offset=16 ) out 4-component vector of float bbv})
diff --git a/glslang/Include/revision.h b/glslang/Include/revision.h
index eca09e71..be96c1c1 100644
--- a/glslang/Include/revision.h
+++ b/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 "SPIRV99.1391"
-#define GLSLANG_DATE "07-Aug-2016"
+#define GLSLANG_REVISION "SPIRV99.1393"
+#define GLSLANG_DATE "08-Aug-2016"