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152
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1 /* Example of a bad call within a signal handler with replacement
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2 alternative. 'handler' calls 'exit', and 'exit' is not allowed
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3 from a signal handler. But '_exit' is allowed. */
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4
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5 #include <signal.h>
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6 #include <stdlib.h>
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7
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8 extern void body_of_program(void);
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9
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10 static void handler(int signum)
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11 {
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12 exit(1); /* { dg-warning "call to 'exit' from within signal handler" "warning" } */
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13 /* { dg-message "note: '_exit' is a possible signal-safe alternative for 'exit'" "replacement note" { target *-*-* } .-1 } */
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14 }
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15
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16 int main(int argc, const char *argv)
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17 {
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18 signal(SIGINT, handler); /* { dg-message "registering 'handler' as signal handler" } */
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19
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20 body_of_program();
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21
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22 return 0;
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23 }
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