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40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/intrin/bits.h"
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#include "libc/dce.h"
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#include "libc/log/log.h"
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#include "libc/mem/mem.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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/**
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* ASAN use-after-free memory safety crash example.
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*
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* make -j8 MODE=dbg o/dbg/examples/auto-memory-safety-crash3.com
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* o/dbg/examples/auto-memory-safety-crash3.com
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*
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*/
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int main(int argc, char *argv[]) {
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if (!IsAsan()) {
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printf("this example is intended for MODE=asan or MODE=dbg\n");
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exit(1);
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}
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char *buffer;
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ShowCrashReports(); /* not needed but yoinks appropriate symbols */
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buffer = malloc(13);
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strcpy(buffer, "hello");
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free(buffer);
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asm("" : "+r"(buffer)); /* prevent compiler being smart */
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buffer[0] = 1;
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return 0;
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}
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