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1 #include <stdio.h>
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2 #include <stdlib.h>
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3 #include <string.h>
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4 int main ()
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5 {
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6 char *foo;
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7
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8 __mf_set_options ("-check-initialization");
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9 foo = (char *)malloc (1);
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10
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11 /* These two operations each expand to a read-modify-write.
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12 * Even though the end result is that every bit of foo[0] is
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13 * eventually written to deterministically, the first read
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14 * triggers an uninit error. Ideally, it shouldn't, so this
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15 * should be treated more like a regular XFAIL. */
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16 foo[0] &= 0xfe;
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17 foo[0] |= 0x01;
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18
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19 return foo[0];
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20 }
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21 /* { dg-output "mudflap violation 1.*" } */
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22 /* { dg-output "Nearby object.*" } */
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23 /* { dg-output "mudflap object.*malloc region.*1r/0w.*" } */
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24 /* { dg-do run { xfail *-*-* } } */
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