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annotate gcc/testsuite/gcc.dg/nonnull-1.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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111
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1 /* Test for the "nonnull" function attribute. */
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2 /* Origin: Jason Thorpe <thorpej@wasabisystems.com> */
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3 /* { dg-do compile } */
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4 /* { dg-options "-Wnonnull" } */
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5
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6 #include <stddef.h>
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7
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8 extern void func1 (char *, char *, int) __attribute__((nonnull));
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9
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10 extern void func2 (char *, char *) __attribute__((nonnull(1)));
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11
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12 extern void func3 (char *, int, char *, int)
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13 __attribute__((nonnull(1,3)));
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14
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15 extern void func4 (char *, char *) __attribute__((nonnull(1)))
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16 __attribute__((nonnull(2)));
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17
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18 void
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19 foo (int i1, int i2, int i3, char *cp1, char *cp2, char *cp3)
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20 {
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21 func1(cp1, cp2, i1);
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22
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23 func1(NULL, cp2, i1); /* { dg-warning "null" "null with argless nonnull 1" } */
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24 func1(cp1, NULL, i1); /* { dg-warning "null" "null with argless nonnull 2" } */
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25 func1(cp1, cp2, 0);
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26
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27 func2(cp1, NULL);
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28 func2(NULL, cp1); /* { dg-warning "null" "null with single explicit nonnull" } */
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29
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30 func3(NULL, i2, cp3, i3); /* { dg-warning "null" "null with explicit nonnull 1" } */
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31 func3(cp3, i2, NULL, i3); /* { dg-warning "null" "null with explicit nonnull 3" } */
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32
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33 func1(i1 ? cp1 : NULL, cp2, i3); /* { dg-warning "null" "null with cond expr rhs" } */
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34 func1(i1 ? NULL : cp1, cp2, i3); /* { dg-warning "null" "null with cond expr lhs" } */
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35 func1(i1 ? (i2 ? cp1 : NULL) : cp2, cp3, i3); /* { dg-warning "null" "null with nested cond expr" } */
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36
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37 func4(NULL, cp1); /* { dg-warning "null" "null with multiple attributes 1" } */
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38 func4(cp1, NULL); /* { dg-warning "null" "null with multiple attributes 2" } */
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39 }