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comparison gcc/testsuite/c-c++-common/Wsizeof-pointer-memaccess4.c @ 145:1830386684a0

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gcc-9.2.0
author anatofuz
date Thu, 13 Feb 2020 11:34:05 +0900
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131:84e7813d76e9 145:1830386684a0
1 /* PR c/88065 - ICE in -Wsizeof-pointer-memaccess on an invalid strncpy
2 PR c/87297 - ICE on strncpy with an undeclared argument
3 { dg-do compile }
4 { dg-options "-Wall -Wsizeof-pointer-memaccess" } */
5
6 typedef __SIZE_TYPE__ size_t;
7
8 char* strncpy (char*, const char*, size_t);
9
10 struct A { char a[4], b[6]; };
11
12 void test_invalid_dst (struct A *p)
13 {
14 strncpy (q->a, p->b, sizeof p->b); /* { dg-error ".q. undeclared|not declared" } */
15 }
16
17 void test_invalid_src (struct A *p)
18 {
19 strncpy (p->a, q->b, sizeof p->b); /* { dg-error ".q. undeclared|not declared" } */
20 }
21
22 void test_invalid_bound (struct A *p)
23 {
24 strncpy (p->a, p->b, sizeof q->b); /* { dg-error ".q. undeclared|not declared" } */
25 }
26
27 /* Verify the C++ front end doesn't ICE (the verifies that the fix
28 for PR c/87297 uses error_operand_p to detect the invalid source
29 argument rather than just checking its equality to error_mark_node. */
30 struct B { char a[4]; };
31
32 void test_cxx_invalid_dst (struct B *p, const char *s)
33 {
34 struct T x; /* { dg-error "storage size|incomplete type|unused" } */
35 __builtin_strncpy (x, s, sizeof p->a);
36 }