Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.c-torture/execute/builtins/20010124-1-lib.c @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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/* Verify that structure return doesn't invoke memcpy on overlapping objects. */ extern void abort (void); extern int inside_main; typedef __SIZE_TYPE__ size_t; struct S { char stuff[1024]; }; union U { struct { int space; struct S s; } a; struct { struct S s; int space; } b; }; struct S f(struct S *p) { return *p; } void g(union U *p) { } void *memcpy(void *a, const void *b, size_t len) { if (inside_main) { if (a < b && a+len > b) abort (); if (b < a && b+len > a) abort (); return a; } else { char *dst = (char *) a; const char *src = (const char *) b; while (len--) *dst++ = *src++; return a; } }