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111
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1 /* Test for constant expressions: overflow and constant expressions;
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2 see also overflow-warn-*.c for some other cases. */
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3 /* Origin: Joseph Myers <joseph@codesourcery.com> */
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4 /* { dg-do compile } */
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5 /* { dg-options "-std=iso9899:1990 -pedantic-errors" } */
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6
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7 #include <float.h>
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8
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9 int a = DBL_MAX; /* { dg-warning "overflow in conversion" } */
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10 /* { dg-error "overflow in constant expression" "constant" { target *-*-* } .-1 } */
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11 int b = (int) DBL_MAX; /* { dg-error "overflow" } */
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12 unsigned int c = -1.0; /* { dg-warning "overflow in conversion" } */
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13 /* { dg-error "overflow in constant expression" "constant" { target *-*-* } .-1 } */
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14 unsigned int d = (unsigned)-1.0; /* { dg-error "overflow" } */
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15
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16 int e = 0 << 1000; /* { dg-warning "shift count" } */
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17 /* { dg-error "constant" "constant" { target *-*-* } .-1 } */
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18 int f = 0 << -1; /* { dg-warning "shift count" } */
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19 /* { dg-error "constant" "constant" { target *-*-* } .-1 } */
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20 int g = 0 >> 1000; /* { dg-warning "shift count" } */
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21 /* { dg-error "constant" "constant" { target *-*-* } .-1 } */
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22 int h = 0 >> -1; /* { dg-warning "shift count" } */
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23 /* { dg-error "constant" "constant" { target *-*-* } .-1 } */
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24
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25 int b1 = (0 ? (int) DBL_MAX : 0);
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26 unsigned int d1 = (0 ? (unsigned int)-1.0 : 0);
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27 int e1 = (0 ? 0 << 1000 : 0);
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28 int f1 = (0 ? 0 << -1 : 0);
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29 int g1 = (0 ? 0 >> 1000 : 0);
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30 int h1 = (0 ? 0 >> -1: 0);
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31
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32 int i = -1 << 0;
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33
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34 int j[1] = { DBL_MAX }; /* { dg-warning "overflow in conversion" } */
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35 /* { dg-error "overflow in constant expression" "constant" { target *-*-* } .-1 } */
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