glcpp: Add several tests for diagnostics.

Which are proving to be useful since some of these tests are not yet
acting as desired, (in particular, the unterminated if test is not
generating any diagnostic).

src/glsl/glcpp/tests/070-undefined-macro-in-expression.c

@@ -0,0 +1,2 @@
+#if UNDEFINED_MACRO
+#endif

src/glsl/glcpp/tests/070-undefined-macro-in-expression.c.expected

@@ -0,0 +1,2 @@
+0:1(21): preprocessor error: syntax error, unexpected IDENTIFIER
+

src/glsl/glcpp/tests/077-else-without-if.c

@@ -0,0 +1 @@
+#else

src/glsl/glcpp/tests/077-else-without-if.c.expected

@@ -0,0 +1,4 @@
+0:1(2): preprocessor error: else without #if
+
+
+

src/glsl/glcpp/tests/078-elif-without-if.c

@@ -0,0 +1 @@
+#elif defined FOO

src/glsl/glcpp/tests/078-elif-without-if.c.expected

@@ -0,0 +1,4 @@
+0:1(2): preprocessor error: elif without #if
+
+
+

src/glsl/glcpp/tests/079-endif-without-if.c

@@ -0,0 +1 @@
+#endif

src/glsl/glcpp/tests/079-endif-without-if.c.expected

@@ -0,0 +1,4 @@
+0:1(2): preprocessor error: #endif without #if
+
+
+

src/glsl/glcpp/tests/080-if-without-expression.c

@@ -0,0 +1,4 @@
+/* Error message for unskipped #if with no expression. */
+#if
+#endif
+

src/glsl/glcpp/tests/080-if-without-expression.c.expected

@@ -0,0 +1,3 @@
+0:2(1): preprocessor error: #if with no expression
+
+ 

src/glsl/glcpp/tests/081-elif-without-expression.c

@@ -0,0 +1,3 @@
+#if 0
+#elif
+#endif

src/glsl/glcpp/tests/081-elif-without-expression.c.expected

@@ -0,0 +1,6 @@
+0:2(1): preprocessor error: #elif with no expression
+
+
+
+
+

src/glsl/glcpp/tests/082-invalid-paste.c

@@ -0,0 +1,2 @@
+#define PASTE(x,y) x ## y
+PASTE(<,>)

src/glsl/glcpp/tests/082-invalid-paste.c.expected

@@ -0,0 +1,5 @@
+0:2(7): preprocessor error: 
+Pasting "<" and ">" does not give a valid preprocessing token.
+
+<
+

src/glsl/glcpp/tests/083-unterminated-if.c

@@ -0,0 +1,2 @@
+#if 1
+

src/glsl/glcpp/tests/084-unbalanced-parentheses.c

@@ -0,0 +1,2 @@
+#define FUNC(x) (2*(x))
+FUNC(23

src/glsl/glcpp/tests/085-incorrect-argument-count.c

@@ -0,0 +1,5 @@
+#define MULT(x,y) ((x)*(y))
+MULT()
+MULT(1)
+MULT(1,2,3)
+

src/glsl/glcpp/tests/085-incorrect-argument-count.c.expected

@@ -0,0 +1,12 @@
+0:2(1): preprocessor error: Error: macro MULT invoked with 1 arguments (expected 2)
+
+0:3(1): preprocessor error: Error: macro MULT invoked with 1 arguments (expected 2)
+
+0:4(1): preprocessor error: Error: macro MULT invoked with 3 arguments (expected 2)
+
+
+MULT()
+MULT(1)
+MULT(1,2,3)
+
+

src/glsl/glcpp/tests/086-reserved-macro-names.c

@@ -0,0 +1,2 @@
+#define __BAD reserved
+#define GL_ALSO_BAD() also reserved

src/glsl/glcpp/tests/086-reserved-macro-names.c.expected

@@ -0,0 +1,7 @@
+0:1(10): preprocessor error: Macro names starting with "__" are reserved.
+
+0:2(9): preprocessor error: Macro names starting with "GL_" are reserved.
+
+
+
+