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| author | Carl Worth <cworth@cworth.org> | 2010-05-20 08:01:44 -0700 |
|---|---|---|
| committer | Carl Worth <cworth@cworth.org> | 2010-05-20 08:01:44 -0700 |
| commit | b569383bbdfa22ed591255f56fb93832633a95ae (patch) | |
| tree | 04a52c022ccec5658c0fac901f427fefafbadc17 /tests | |
| parent | 472524413d004680dbdb89602617f32da8f42f56 (diff) | |
Avoid re-expanding a macro name that has once been rejected from expansion.
The specification of the preprocessor in C99 says that when we see a
macro name that we are already expanding that we refuse to expand it
now, (which we've done for a while), but also that we refuse to ever
expand it later if seen in other contexts at which it would be
legitimate to expand.
We add a test case for that here, and fix it to work. The fix takes
advantage of a new token_t value for tokens and argument words along
with the recently added IDENTIFIER_FINALIZED token type which
instructs the parser to not even look for another expansion.
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/037-finalize-unexpanded-macro.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tests/037-finalize-unexpanded-macro.c b/tests/037-finalize-unexpanded-macro.c new file mode 100644 index 0000000000..b3a2f37f1b --- /dev/null +++ b/tests/037-finalize-unexpanded-macro.c @@ -0,0 +1,3 @@ +#define expand(x) expand(x once) +#define foo(x) x +foo(expand(just)) |