Carl Worth
b569383bbd
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.
4 lines
68 B
C
4 lines
68 B
C
#define expand(x) expand(x once)
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#define foo(x) x
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foo(expand(just))
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