1a729bce86
This interceptor only addresses writes to inputs. Reads of inputs are not checked. Reviewed By: vitalybuka Differential Revision: https://reviews.llvm.org/D126851
43 lines
1.2 KiB
C++
43 lines
1.2 KiB
C++
// RUN: %clangxx_msan -O0 %s -o %t -lresolv && %run %t
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#include <assert.h>
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#include <resolv.h>
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#include <string.h>
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#include <sanitizer/msan_interface.h>
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void testWrite() {
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char unsigned input[] = {0xff, 0xc5, 0xf7, 0xff, 0x00, 0x00, 0xff, 0x0a, 0x00,
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0x00, 0x00, 0x01, 0x00, 0x00, 0x02, 0x00, 0x01, 0x00,
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0x10, 0x01, 0x05, 0x00, 0x01, 0x0a, 0x67, 0x6f, 0x6f,
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0x67, 0x6c, 0x65, 0x2e, 0x63, 0x6f, 0x6d, 0x00};
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char output[1024];
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int res = dn_expand(input, input + sizeof(input), input + 23, output,
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sizeof(output));
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assert(res >= 0);
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__msan_check_mem_is_initialized(output, res);
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}
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void testWriteZeroLength() {
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char unsigned input[] = {
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0xff, 0xc5, 0xf7, 0xff, 0x00, 0x00, 0xff, 0x0a, 0x00, 0x00, 0x00, 0x01,
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0x00, 0x00, 0x02, 0x00, 0x01, 0x00, 0x10, 0x01, 0x05, 0x00, 0x01, 0x00,
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};
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char output[1024];
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int res = dn_expand(input, input + sizeof(input), input + 23, output,
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sizeof(output));
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assert(res >= 0);
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__msan_check_mem_is_initialized(output, res);
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}
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int main(int iArgc, const char *szArgv[]) {
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testWrite();
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testWriteZeroLength();
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return 0;
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}
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