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111
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1 /* Copyright (C) 2001, 2003 Free Software Foundation, Inc. */
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2
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3 /* { dg-do preprocess } */
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4 /* { dg-options "-ansi" } */
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5
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6 /* This tests that we avoid accidental pasting, as well as gratuitous
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7 space insertion, in various nasty places _inside_ a macro's
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8 replacement list: on either side of a paste, and on either side of
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9 an argument. It also tests that we don't pass empty macro leading
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10 whitespace to the next line - this problem use to break Emacs
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11 preprocessor abuse.
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12
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13 Neil Booth, 1 Feb 2001. */
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14
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15 #define EMPTY_WITH_LEADING_SPACE
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16 #define f(x, y) :x: -y##> -##y>
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17 #define g(x, y) :x: :y##2 2##y:
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18
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19 /* This should preprocess as
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20
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21 : : : - > - >
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22 :2: :22 22:
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23
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24 We used to get a space at the start of the line. */
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25
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26 EMPTY_WITH_LEADING_SPACE
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27 f(:,)
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28 g(2, 2)
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29
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30 /* { dg-final { scan-file avoidpaste2.i "(^|\\n): : : - > - >" } }
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31 { dg-final { scan-file avoidpaste2.i "(^|\\n):2: :22 22:" } } */
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