glsl/glcpp: Add testing to ensure illegal characters generate errors

This mostly-exhaustive test ensures that the illegal-character error
implemented in the previous commit is actually generated for most every
illegal character.

2 files changed, 264 insertions, 0 deletions

diff --git a/src/glsl/glcpp/tests/141-illegal-characters.c b/src/glsl/glcpp/tests/141-illegal-characters.c
new file mode 100644
index 0000000000..0ea227e762
--- /dev/null
+++ b/src/glsl/glcpp/tests/141-illegal-characters.c
@@ -0,0 +1,99 @@
+/* After subtracting out the legal characters (see test
+ * 140-legal-characters.c), any other possible character must be
+ * illegal. That leaves:
+ *
+ * Illegal in all contexts:
+ *
+ *      0x00 - 0x08 (^@ - ^H)
+ *      0x0E - 0x1F (^N - ^Z, ^[, ^\, ^], ^^, ^_)
+ *      0x22 (")
+ *      0x24 ($)
+ *      0x27 (')
+ *      0x40 (@)
+ *      0x60 (`)
+ *      0x7F (DEL or ^?)
+ *      0x80 - 0xFF (non-ASCII)
+ *
+ * Illegal in some contexts:
+ *
+ *      0x23 (#), not introducting a directive, not as part of past operator
+ *      0x5C (\), not as last character of a line
+ *
+ * This file tests at least one occurence of most of the above
+ * characters. The exceptions are:
+ *
+ * 0x00: This character would be tricky to test. The calling
+ *        convention of bison to the lexer is such that a return value
+ *        of 0 indicates end-of-file. So without any direct support
+ *        for the 0x00 character, it is being interpreted as
+ *        end-of-file. This semms legitimate enough, (since the 0x00
+ *        character is illegal).
+ *
+ * 0x80 -0xFF: Only 25% of these characters are represented here.
+ */
+

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+.\.
diff --git a/src/glsl/glcpp/tests/141-illegal-characters.c.expected b/src/glsl/glcpp/tests/141-illegal-characters.c.expected
new file mode 100644
index 0000000000..706cde48ba
--- /dev/null
+++ b/src/glsl/glcpp/tests/141-illegal-characters.c.expected
@@ -0,0 +1,165 @@
+0:34(1): preprocessor error: Illegal character '
'
+0:35(1): preprocessor error: Illegal character ''
+0:36(1): preprocessor error: Illegal character ''
+0:37(1): preprocessor error: Illegal character ''
+0:38(1): preprocessor error: Illegal character ''
+0:39(1): preprocessor error: Illegal character ''
+0:40(1): preprocessor error: Illegal character ''
+0:41(1): preprocessor error: Illegal character ''
+0:42(1): preprocessor error: Illegal character ''
+0:43(1): preprocessor error: Illegal character ''
+0:44(1): preprocessor error: Illegal character ''
+0:45(1): preprocessor error: Illegal character ''
+0:46(1): preprocessor error: Illegal character ''
+0:47(1): preprocessor error: Illegal character ''
+0:48(1): preprocessor error: Illegal character ''
+0:49(1): preprocessor error: Illegal character ''
+0:50(1): preprocessor error: Illegal character ''
+0:51(1): preprocessor error: Illegal character ''
+0:52(1): preprocessor error: Illegal character ''
+0:53(1): preprocessor error: Illegal character ''
+0:54(1): preprocessor error: Illegal character ''
+0:55(1): preprocessor error: Illegal character ''
+0:56(1): preprocessor error: Illegal character ''
+0:57(1): preprocessor error: Illegal character ''
+0:58(1): preprocessor error: Illegal character ''
+0:59(1): preprocessor error: Illegal character ''
+0:60(1): preprocessor error: Illegal character '"'
+0:61(1): preprocessor error: Illegal character '$'
+0:62(1): preprocessor error: Illegal character '''
+0:63(1): preprocessor error: Illegal character '@'
+0:64(1): preprocessor error: Illegal character '`'
+0:65(1): preprocessor error: Illegal character ''
+0:66(1): preprocessor error: Illegal character '�'
+0:67(1): preprocessor error: Illegal character '�'
+0:68(1): preprocessor error: Illegal character '�'
+0:69(1): preprocessor error: Illegal character '�'
+0:70(1): preprocessor error: Illegal character '�'
+0:71(1): preprocessor error: Illegal character '�'
+0:72(1): preprocessor error: Illegal character '�'
+0:73(1): preprocessor error: Illegal character '�'
+0:74(1): preprocessor error: Illegal character '�'
+0:75(1): preprocessor error: Illegal character '�'
+0:76(1): preprocessor error: Illegal character '�'
+0:77(1): preprocessor error: Illegal character '�'
+0:78(1): preprocessor error: Illegal character '�'
+0:79(1): preprocessor error: Illegal character '�'
+0:80(1): preprocessor error: Illegal character '�'
+0:81(1): preprocessor error: Illegal character '�'
+0:82(1): preprocessor error: Illegal character '�'
+0:83(1): preprocessor error: Illegal character '�'
+0:84(1): preprocessor error: Illegal character '�'
+0:85(1): preprocessor error: Illegal character '�'
+0:86(1): preprocessor error: Illegal character '�'
+0:87(1): preprocessor error: Illegal character '�'
+0:88(1): preprocessor error: Illegal character '�'
+0:89(1): preprocessor error: Illegal character '�'
+0:90(1): preprocessor error: Illegal character '�'
+0:91(1): preprocessor error: Illegal character '�'
+0:92(1): preprocessor error: Illegal character '�'
+0:93(1): preprocessor error: Illegal character '�'
+0:94(1): preprocessor error: Illegal character '�'
+0:95(1): preprocessor error: Illegal character '�'
+0:96(1): preprocessor error: Illegal character '�'
+0:97(1): preprocessor error: Illegal character '�'
+0:98(2): preprocessor error: Illegal character '#'
+0:99(2): preprocessor error: Illegal character '\'
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