Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/c-c++-common/Wsizeof-pointer-memaccess4.c @ 158:494b0b89df80 default tip
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author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
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/* PR c/88065 - ICE in -Wsizeof-pointer-memaccess on an invalid strncpy PR c/87297 - ICE on strncpy with an undeclared argument { dg-do compile } { dg-options "-Wall -Wsizeof-pointer-memaccess" } */ typedef __SIZE_TYPE__ size_t; char* strncpy (char*, const char*, size_t); struct A { char a[4], b[6]; }; void test_invalid_dst (struct A *p) { strncpy (q->a, p->b, sizeof p->b); /* { dg-error ".q. undeclared|not declared" } */ } void test_invalid_src (struct A *p) { strncpy (p->a, q->b, sizeof p->b); /* { dg-error ".q. undeclared|not declared" } */ } void test_invalid_bound (struct A *p) { strncpy (p->a, p->b, sizeof q->b); /* { dg-error ".q. undeclared|not declared" } */ } /* Verify the C++ front end doesn't ICE (the verifies that the fix for PR c/87297 uses error_operand_p to detect the invalid source argument rather than just checking its equality to error_mark_node. */ struct B { char a[4]; }; void test_cxx_invalid_dst (struct B *p, const char *s) { struct T x; /* { dg-error "storage size|incomplete type|unused" } */ __builtin_strncpy (x, s, sizeof p->a); }