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145
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1 /* PR c/88065 - ICE in -Wsizeof-pointer-memaccess on an invalid strncpy
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2 PR c/87297 - ICE on strncpy with an undeclared argument
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3 { dg-do compile }
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4 { dg-options "-Wall -Wsizeof-pointer-memaccess" } */
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5
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6 typedef __SIZE_TYPE__ size_t;
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7
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8 char* strncpy (char*, const char*, size_t);
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9
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10 struct A { char a[4], b[6]; };
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11
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12 void test_invalid_dst (struct A *p)
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13 {
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14 strncpy (q->a, p->b, sizeof p->b); /* { dg-error ".q. undeclared|not declared" } */
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15 }
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16
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17 void test_invalid_src (struct A *p)
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18 {
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19 strncpy (p->a, q->b, sizeof p->b); /* { dg-error ".q. undeclared|not declared" } */
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20 }
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21
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22 void test_invalid_bound (struct A *p)
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23 {
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24 strncpy (p->a, p->b, sizeof q->b); /* { dg-error ".q. undeclared|not declared" } */
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25 }
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26
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27 /* Verify the C++ front end doesn't ICE (the verifies that the fix
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28 for PR c/87297 uses error_operand_p to detect the invalid source
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29 argument rather than just checking its equality to error_mark_node. */
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30 struct B { char a[4]; };
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31
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32 void test_cxx_invalid_dst (struct B *p, const char *s)
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33 {
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34 struct T x; /* { dg-error "storage size|incomplete type|unused" } */
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35 __builtin_strncpy (x, s, sizeof p->a);
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36 }
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