c82f5c0ce5
This patch fixes a "set but not used" warning in setjmp/jmpbug.c. A variable is used only to store the result of alloca. A cast to void is added to avoid the warning, and the variable is made volatile to ensure the call to alloca isn't optimized away for being unused. Tested for x86_64. * setjmp/jmpbug.c (test): Make foo volatile and cast it to void.
42 lines
513 B
C
42 lines
513 B
C
/* setjmp vs alloca test case. Exercised bug on sparc. */
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#include <stdio.h>
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#include <setjmp.h>
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#include <alloca.h>
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static void
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sub5 (jmp_buf buf)
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{
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longjmp (buf, 1);
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}
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static void
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test (int x)
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{
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jmp_buf buf;
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char *volatile foo;
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int arr[100];
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arr[77] = x;
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if (setjmp (buf))
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{
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printf ("made it ok; %d\n", arr[77]);
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return;
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}
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foo = (char *) alloca (128);
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(void) foo;
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sub5 (buf);
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}
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int
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main (void)
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{
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int i;
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for (i = 123; i < 345; ++i)
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test (i);
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return 0;
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}
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