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1 /* Test for some aspects of null format string handling. */
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2 /* Origin: Jason Thorpe <thorpej@wasabisystems.com> */
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3 /* { dg-do compile } */
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4 /* { dg-options "-std=gnu99 -Wformat" } */
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5
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6 #define DONT_GNU_PROTOTYPE
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7 #include "format.h"
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8
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9 extern void my_printf (const char *, ...) __attribute__((format(gnu_attr_printf,1,2)));
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10 extern const char *my_format (const char *, const char *)
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11 __attribute__((format_arg(2)));
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12
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13 void
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14 foo (int i1)
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15 {
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16 /* Warning about a null format string has been decoupled from the actual
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17 format check. However, we still expect to be warned about any excess
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18 arguments after a null format string. */
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19 my_printf (NULL);
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20 my_printf (NULL, i1); /* { dg-warning "too many" "null format with arguments" } */
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21
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22 my_printf (my_format ("", NULL));
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23 my_printf (my_format ("", NULL), i1); /* { dg-warning "too many" "null format_arg with arguments" } */
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24
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25 /* While my_printf allows a null argument, dgettext does not, so we expect
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26 a null argument warning here. */
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27 my_printf (dgettext ("", NULL)); /* { dg-warning "null" "null format with dgettext" } */
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28 }
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