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https://github.com/Zenithsiz/ftmemsim-valgrind.git
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47 lines
986 B
C
47 lines
986 B
C
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#include <stdlib.h>
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int main(void)
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{
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int i;
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int* y;
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int** x = malloc(sizeof(int*) * 100);
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int* x2 = malloc(sizeof(int) * 100);
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void* sink;
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x[0] = x2; // this is to check the pointerness is copied across ok
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x[49] = x2; // this is to check the pointerness is copied across ok
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i = *x[0];
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i = *x[49];
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x = realloc(x, sizeof(int*)*50); // smaller
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y = x[0]; // ok
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y = x[49]; // ok
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y = x[-1]; // bad
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y = x[50]; // bad
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i = *x[0]; // ok
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i = *x[49]; // ok
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x = realloc(x, sizeof(int*)*50); // same size
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y = x[0]; // ok
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y = x[49]; // ok
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y = x[-1]; // bad
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y = x[50]; // bad
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i = *x[0]; // ok
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i = *x[49]; // ok
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x = realloc(x, sizeof(int*)*100); // bigger
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y = x[0]; // ok
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y = x[49]; // ok
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y = x[50]; // ok
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y = x[99]; // ok
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y = x[-1]; // bad
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y = x[100]; // bad
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i = *x[0]; // ok
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i = *x[49]; // ok
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sink = realloc((void*)0x99, 10); // fails
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return 0;
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}
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