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111
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1 /* { dg-do compile } */
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2
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3 #include <stdarg.h>
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4
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5 void
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6 err (int a)
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7 {
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8 va_list vp;
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145
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9 va_start (vp, a); // { dg-error "used in function with fixed arguments" }
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111
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10 }
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11
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12 #pragma GCC diagnostic push
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13 #pragma GCC diagnostic ignored "-Wvarargs"
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14
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15 void
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16 foo0 (int a, int b, ...)
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17 {
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18 va_list vp;
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19 /* 'a' is not the last argument of the enclosing function, but
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20 don't warn because we are ignoring -Wvarargs. */
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21 va_start (vp, a);
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22 va_end (vp);
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23 }
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24
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25 void
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26 foo1 (int a, register int b, ...) // { dg-warning "ISO C\\+\\+17 does not allow 'register' storage class specifier" "" { target c++17 } }
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27 {
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28 va_list vp;
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29 /* 'b' is declared with register storage, but don't warn
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30 because we are ignoring -Wvarargs. */
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31 va_start (vp, b);
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32 va_end (vp);
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33 }
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34
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35 #pragma GCC diagnostic pop
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36
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37 void
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38 foo2 (int a, int b, ...)
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39 {
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40 va_list vp;
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41 /* 'a' is not the last argument of the enclosing function, so
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42 warn. */
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43 va_start (vp, a); /* { dg-warning "second parameter" } */
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44 va_end (vp);
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45 }
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46
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47 void
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48 foo3 (int a, register int b, ...) // { dg-warning "ISO C\\+\\+17 does not allow 'register' storage class specifier" "" { target c++17 } }
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49 {
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50 va_list vp;
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51 /* 'b' is declared with register storage, so warn. */
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52 va_start (vp, b); /* { dg-warning "undefined behavior" } */
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53 va_end (vp);
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54 }
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