diff options
| author | Carl Worth <[email protected]> | 2010-07-20 16:44:03 -0700 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2010-07-20 17:01:12 -0700 |
| commit | e1acbfca322c4ac720707ec8d3fda08fab65a30b (patch) | |
| tree | 2ff0280eab03abc0c9c8655f050ea2ecb9567bdd /src/glsl/glcpp/tests/068-accidental-pasting.c | |
| parent | 942ccc517012e360a7e30d3322331c8450dda022 (diff) | |
glcpp: Avoid accidental token pasting in preprocessed result.
Consider this test case:
#define EMPTY
int foo = 1+EMPTY+4;
The expression should compile as the sequence of tokens 1, PLUS,
UNARY_POSITIVE, 4. But glcpp has been failing for this case since it
results in the string "1++4" which a compiler correctly sees as a
syntax error, (1, POST_INCREMENT, 4).
We fix this by changing any macro with an empty definition to result
in a single SPACE token rather than nothing. This then gives "1+ +4"
which compiles correctly.
This commit does touch up the two existing test cases which already
have empty macros, (to add the space to the expected result).
It also adds a new test case to exercise the above scenario.
Diffstat (limited to 'src/glsl/glcpp/tests/068-accidental-pasting.c')
| -rw-r--r-- | src/glsl/glcpp/tests/068-accidental-pasting.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/glsl/glcpp/tests/068-accidental-pasting.c b/src/glsl/glcpp/tests/068-accidental-pasting.c new file mode 100644 index 00000000000..699ac5144e5 --- /dev/null +++ b/src/glsl/glcpp/tests/068-accidental-pasting.c @@ -0,0 +1,11 @@ +#define empty +<empty< +<empty= +>empty> +>empty= +=empty= +!empty= +&empty& +|empty| ++empty+ +-empty- |