f4784fd13f
Support for `qMemTags` packet in debugserver which allows usage of LLDB's `memory tag read` on Darwin.
29 lines
712 B
C
29 lines
712 B
C
#include <malloc/malloc.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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// Produce some names on the trace
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const size_t tag_granule = 16;
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static uint8_t *my_malloc(void) { return malloc(2 * tag_granule); }
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static uint8_t *allocate(void) { return my_malloc(); }
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static void my_free(void *ptr) { free(ptr); }
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static void deallocate(void *ptr) { my_free(ptr); }
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static void touch_memory(uint8_t *ptr) { ptr[7] = 1; } // invalid access
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static void modify(uint8_t *ptr) { touch_memory(ptr); }
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int main() {
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uint8_t *ptr = allocate();
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strncpy((char *)ptr, "Hello", 16);
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strncpy((char *)ptr + 16, "World", 16);
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deallocate(ptr); // before free
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modify(ptr); // use-after-free
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return 0;
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}
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