106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/* Verify that
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{ dg-do compile }
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{ dg-options "-O2 -Wstringop-truncation -Wno-stringop-overflow -ftrack-macro-expansion=0" } */
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typedef __SIZE_TYPE__ size_t;
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#define stpncpy(d, s, n) __builtin_stpncpy ((d), (s), (n))
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#define strncpy(d, s, n) __builtin_stpncpy ((d), (s), (n))
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void sink (void*);
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struct A {
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char arr[3] __attribute__ ((nonstring));
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char str[3];
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};
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struct B { struct A a[3]; int i; };
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struct C { struct B b[3]; int i; };
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void stpncpy_arr_1 (struct C *pc, const char *s)
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{
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stpncpy (pc->b[0].a[0].arr, s, sizeof pc->b[0].a[0].arr);
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sink (pc->b[0].a[0].arr);
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stpncpy (pc->b[0].a[1].arr, s, sizeof pc->b[0].a[1].arr);
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sink (pc->b[0].a[1].arr);
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stpncpy (pc->b[0].a[2].arr, s, sizeof pc->b[0].a[2].arr);
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sink (pc->b[0].a[2].arr);
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stpncpy (pc->b[1].a[0].arr, s, sizeof pc->b[1].a[0].arr);
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sink (pc->b[1].a[0].arr);
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stpncpy (pc->b[1].a[1].arr, s, sizeof pc->b[1].a[1].arr);
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sink (pc->b[1].a[1].arr);
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stpncpy (pc->b[1].a[2].arr, s, sizeof pc->b[1].a[2].arr);
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sink (pc->b[1].a[2].arr);
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stpncpy (pc->b[2].a[0].arr, s, sizeof pc->b[2].a[0].arr);
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sink (pc->b[2].a[0].arr);
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stpncpy (pc->b[2].a[1].arr, s, sizeof pc->b[2].a[1].arr);
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sink (pc->b[2].a[1].arr);
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stpncpy (pc->b[2].a[2].arr, s, sizeof pc->b[2].a[2].arr);
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sink (pc->b[2].a[2].arr);
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}
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void stpncpy_str_nowarn_1 (struct C *pc, const char *s)
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{
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stpncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str)[-1] = 0; /* { dg-bogus "\\\[-Wstringop-truncation" } */
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}
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void stpncpy_str_nowarn_2 (struct C *pc, const char *s)
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{
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*stpncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str - 1) = 0; /* { dg-bogus "\\\[-Wstringop-truncation" } */
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}
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void stpncpy_str_nowarn_3 (struct C *pc, const char *s)
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{
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char *d = stpncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str); /* { dg-bogus "\\\[-Wstringop-truncation" } */
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d[-1] = 0;
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}
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void stpncpy_str_nowarn_4 (struct C *pc, const char *s)
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{
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char *d = stpncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str - 1); /* { dg-bogus "\\\[-Wstringop-truncation" } */
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*d = 0;
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}
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void strncpy_arr_1 (struct C *pc, const char *s)
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{
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strncpy (pc->b[0].a[0].arr, s, sizeof pc->b[0].a[0].arr);
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sink (pc->b[0].a[0].arr);
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strncpy (pc->b[0].a[1].arr, s, sizeof pc->b[0].a[1].arr);
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sink (pc->b[0].a[1].arr);
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strncpy (pc->b[0].a[2].arr, s, sizeof pc->b[0].a[2].arr);
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sink (pc->b[0].a[2].arr);
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}
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void strncpy_str_nowarn_1 (struct C *pc, const char *s)
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{
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strncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str); /* { dg-bogus "\\\[-Wstringop-truncation" } */
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pc->b[0].a[0].str[sizeof pc->b[0].a[0].str - 1] = 0;
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}
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void strncpy_str_warn_1 (struct C *pc, const char *s)
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{
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strncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str); /* { dg-warning "specified bound 3 equals destination size" } */
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pc->b[1].a[0].str[sizeof pc->b[0].a[0].str - 1] = 0;
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}
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void strncpy_str_warn_2 (struct C *pc, const char *s)
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{
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strncpy (pc->b[0].a[0].str, s, sizeof pc->b[0].a[0].str); /* { dg-warning "specified bound 3 equals destination size" } */
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pc->b[0].a[1].str[sizeof pc->b[0].a[0].str - 1] = 0;
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}
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