a0a9606d4b
* cpplib.c (run_directive): Use correct line number for output
of _Pragma. Remember any in-progress directive.
* gcc.dg/cpp/vararg2.c, gcc.dg/cpp/_Pragm1.c: New tests.
From-SVN: r37194
132 lines
5.0 KiB
C
132 lines
5.0 KiB
C
/* { dg-do preprocess } */
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/* { dg-options "-std=gnu99" } */
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/* Jamie's varargs macros from hell. Not for the faint of heart.
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Great tests that C99 and GNU varargs give identical results.
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Adapted to the testsuite by Neil Booth, 1 Nov 2000. */
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/* Permission is granted to use, copy, modify and distribute this file
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freely for any purpose whatsoever. This file is free software, and
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there's no warranty.
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-- Jamie Lokier <jamie.lokier@cern.ch>, 25/Sep/2000. */
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#define dup3(x) x,x,x
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/* Count elements in a list (0 to 10 max). */
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#define gnu_count(y...) _gnu_count1 ( , ##y)
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#define _gnu_count1(y...) _gnu_count2 (y,10,9,8,7,6,5,4,3,2,1,0)
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#define _gnu_count2(_,x0,x1,x2,x3,x4,x5,x6,x7,x8,x9,n,ys...) n
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/* Tail of a list. */
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#define gnu_tail(y...) _gnu_tail (y)
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#define _gnu_tail(x,y...) y
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/* Repeat N times. */
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#define gnu_repeat(n, x) gnu_tail (_gnu_repeat (n, x))
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#define _gnu_repeat(n, x) _gnu_repeat_##n (x)
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#define _gnu_repeat_0(x)
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#define _gnu_repeat_1(x) ,x
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#define _gnu_repeat_2(x) ,x,x
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#define _gnu_repeat_3(x) ,x,x,x
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#define _gnu_repeat_4(x) ,x,x,x,x
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#define _gnu_repeat_5(x) ,x,x,x,x,x
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#define _gnu_keep(xs...) xs
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#define _gnu_discard(xs...)
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#define _gnu_split_r(n,xs...) _gnu_split_rd (n,_gnu_keep,_gnu_discard xs)
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#define _gnu_split_d(n,xs...) _gnu_split_rd (n,_gnu_discard,_gnu_keep xs)
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#define _gnu_split_rd(n,xs...) _gnu_split_##n (xs)
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#define _gnu_split_0(a,b,xs...) a() b(xs)
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#define _gnu_split_1(a,b,x0,xs...) a(x0) b(xs)
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#define _gnu_split_2(a,b,x0,x1,xs...) a(x0,x1) b(xs)
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#define _gnu_split_3(a,b,x0,x1,x2,xs...) a(x0,x1,x2) b(xs)
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#define _gnu_split_4(a,b,x0,x1,x2,x3,xs...) a(x0,x1,x2,x3) b(xs)
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#define _gnu_split_5(a,b,x0,x1,x2,x3,x4,xs...) a(x0,x1,x2,x3,x4) b(xs)
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/* List manipulations. Surprise: index zero is the rightmost element. */
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#define gnu_take(n, xs...) \
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_gnu_split_d (_gnu_count1 ( , ## xs), _gnu_repeat (n, _gnu_error) , ## xs)
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#define gnu_drop(n, xs...) \
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_gnu_split_d (n,,_gnu_split_r (_gnu_count1 ( , ## xs), _gnu_repeat (n, _gnu_error) , ## xs))
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#define gnu_index(pos, xs...) gnu_take (1, gnu_drop (pos , ## xs))
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/* C99 __VA_ARGS__ versions */
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#define c99_count(...) _c99_count1 ( , ##__VA_ARGS__)/* If only ## worked.*/
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#define _c99_count1(...) _c99_count2 (__VA_ARGS__,10,9,8,7,6,5,4,3,2,1,0)
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#define _c99_count2(_,x0,x1,x2,x3,x4,x5,x6,x7,x8,x9,n,...) n
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#define c99_tail(...) _c99_tail (__VA_ARGS__)
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#define _c99_tail(x,...) __VA_ARGS__
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/* Repeat N times. */
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#define c99_repeat(n, x) c99_tail (_c99_repeat (n, x))
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#define _c99_repeat(n, x) _c99_repeat_##n (x)
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#define _c99_repeat_0(x)
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#define _c99_repeat_1(x) ,x
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#define _c99_repeat_2(x) ,x,x
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#define _c99_repeat_3(x) ,x,x,x
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#define _c99_repeat_4(x) ,x,x,x,x
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#define _c99_repeat_5(x) ,x,x,x,x,x
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#define _c99_keep(...) __VA_ARGS__
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#define _c99_discard(...)
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#define _c99_split_r(n,...) _c99_split_rd(n,_c99_keep,_c99_discard __VA_ARGS__)
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#define _c99_split_d(n,...) _c99_split_rd(n,_c99_discard,_c99_keep __VA_ARGS__)
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#define _c99_split_rd(n,...) _c99_split_##n (__VA_ARGS__)
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#define _c99_split_0(a,b,...) a() b(__VA_ARGS__)
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#define _c99_split_1(a,b,x0,...) a(x0) b(__VA_ARGS__)
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#define _c99_split_2(a,b,x0,x1,...) a(x0,x1) b(__VA_ARGS__)
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#define _c99_split_3(a,b,x0,x1,x2,...) a(x0,x1,x2) b(__VA_ARGS__)
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#define _c99_split_4(a,b,x0,x1,x2,x3,...) a(x0,x1,x2,x3) b(__VA_ARGS__)
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#define _c99_split_5(a,b,x0,x1,x2,x3,x4,...) a(x0,x1,x2,x3,x4) b(__VA_ARGS__)
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/* List manipulations. Surprise: index zero is the rightmost element. */
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#define c99_take(n, ...) \
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_c99_split_d (_c99_count1 ( , ## __VA_ARGS__), _c99_repeat (n, _c99_error) , ## __VA_ARGS__)
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#define c99_drop(n, ...) \
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_c99_split_d (n,,_c99_split_r (_c99_count1 ( , ## __VA_ARGS__), _c99_repeat (n, _c99_error) , ## __VA_ARGS__))
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#define c99_index(pos, ...) c99_take (1, c99_drop (pos , ## __VA_ARGS__))
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/************** Expansions **************/
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/* Correct answers are 0, 0, 1, 2, 10. */
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#if _gnu_count1 () != 0 || gnu_count () != 0 || gnu_count (A) != 1 \
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|| gnu_count (,) != 2 || gnu_count (A, B, C, D, E, F, G, H, I, J) != 10
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#error gnu_count
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#endif
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/* Correct answers are empty, 'x'. */
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#if gnu_repeat (0, 'x') gnu_repeat (1, 'x') != 'x'
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#error gnu_repeat
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#endif
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/* Correct answers are "e", "b", "a", empty. */
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#if gnu_index (0, 'a', 'b', 'c', 'd', 'e') != 'e' \
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|| gnu_index (3, 'a', 'b', 'c', 'd', 'e') != 'b' \
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|| gnu_index (4, 'a', 'b', 'c', 'd', 'e') != 'a' \
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gnu_index (5, 'a', 'b', 'c', 'd', 'e')
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#error gnu_index
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#endif
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/************* C99 tests *************/
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/* The answers are 0, 0, 1, 2, 10 as for the non-C99 version. */
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#if _c99_count1 () != 0 || c99_count () != 0 || c99_count (A) != 1 \
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|| c99_count (,) != 2 || c99_count (A, B, C, D, E, F, G, H, I, J) != 10
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#error c99_count
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#endif
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/* Correct answers are empty, 'x'. */
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#if c99_repeat (0, 'x') c99_repeat (1, 'x') != 'x'
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#error c99_repeat
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#endif
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/* Correct answers are "e", "b", "a", empty. */
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#if c99_index (0, 'a', 'b', 'c', 'd', 'e') != 'e' \
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|| c99_index (3, 'a', 'b', 'c', 'd', 'e') != 'b' \
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|| c99_index (4, 'a', 'b', 'c', 'd', 'e') != 'a' \
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c99_index (5, 'a', 'b', 'c', 'd', 'e')
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#error gnu_index
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#endif
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