tccpp: fix issues, add tests
* fix some macro expansion issues
* add some pp tests in tests/pp
* improved tcc -E output for better diff'ability
* remove -dD feature (quirky code, exotic feature,
didn't work well)
Based partially on ideas / researches from PipCet
Some issues remain with VA_ARGS macros (if used in a
rather tricky way).
Also, to keep it simple, the pp doesn't automtically
add any extra spaces to separate tokens which otherwise
would form wrong tokens if re-read from tcc -E output
(such as '+' '=') GCC does that, other compilers don't.
* cleanups
- #line 01 "file" / # 01 "file" processing
- #pragma comment(lib,"foo")
- tcc -E: forward some pragmas to output (pack, comment(lib))
- fix macro parameter list parsing mess from
a3fc54345949535524d01319e1ca6378b7c2c201
a715d7143d9d17da17e67fec6af1c01409a71a31
(some coffee might help, next time ;)
- introduce TOK_PPSTR - to have character constants as
written in the file (similar to TOK_PPNUM)
- allow '\' appear in macros
- new functions begin/end_macro to:
- fix switching macro levels during expansion
- allow unget_tok to unget more than one tok
- slight speedup by using bitflags in isidnum_table
Also:
- x86_64.c : fix decl after statements
- i386-gen,c : fix a vstack leak with VLA on windows
- configure/Makefile : build on windows (MSYS) was broken
- tcc_warning: fflush stderr to keep output order (win32)
2015-05-09 20:29:39 +08:00
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#define D1(s, ...) s
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#define D2(s, ...) s D1(__VA_ARGS__)
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#define D3(s, ...) s D2(__VA_ARGS__)
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#define D4(s, ...) s D3(__VA_ARGS__)
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D1(a)
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D2(a, b)
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D3(a, b, c)
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D4(a, b, c, d)
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x D4(a, b, c, d) y
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x D4(a, b, c) y
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x D4(a, b) y
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x D4(a) y
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x D4() y
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#define GNU_COMMA(X,Y...) X,## Y
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x GNU_COMMA(A,B,C) y
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x GNU_COMMA(A,B) y
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x GNU_COMMA(A) y
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x GNU_COMMA() y
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#define __sun_attr___noreturn__ __attribute__((__noreturn__))
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#define ___sun_attr_inner(__a) __sun_attr_##__a
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#define __sun_attr__(__a) ___sun_attr_inner __a
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#define __NORETURN __sun_attr__((__noreturn__))
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__NORETURN
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#define X(...)
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#define Y(...) 1 __VA_ARGS__ 2
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Y(X X() ())
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2023-04-07 06:45:20 +08:00
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#define DDD(A, B) D_ ## B ## _D_ ## A
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#define CCC(X, ...) DDD(X, ##__VA_ARGS__)
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/* must be D_B_D_A (not D_B _D_A) */
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CCC(A,B)
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