[msan] Temporarily remove a failing test to fix the bot.
The test requires a newer glibc version that the one on the bot. llvm-svn: 251077
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// RUN: %clangxx_msan -std=c++11 -O0 %s -o %t && %run %t
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// RUN: %clangxx_msan -std=c++11 -O0 %s -o %t -DPOSITIVE && not %run %t |& FileCheck %s
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#include <assert.h>
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#include <sanitizer/msan_interface.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <unistd.h>
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int main(void) {
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char a[100];
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memset(a, 0xab, 100);
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char b[100];
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iovec iov_a[] = {{(void *)a, 20}, (void *)(a + 50), 10};
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iovec iov_b[] = {{(void *)(b + 10), 10}, (void *)(b + 30), 20};
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__msan_poison(&b, sizeof(b));
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ssize_t res = process_vm_readv(getpid(), iov_b, 2, iov_a, 2, 0);
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assert(res == 30);
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__msan_check_mem_is_initialized(b + 10, 10);
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__msan_check_mem_is_initialized(b + 30, 20);
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assert(__msan_test_shadow(b + 9, 1) == 0);
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assert(__msan_test_shadow(b + 20, 1) == 0);
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assert(__msan_test_shadow(b + 29, 1) == 0);
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assert(__msan_test_shadow(b + 50, 1) == 0);
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#ifdef POSITIVE
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__msan_unpoison(&b, sizeof(b));
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__msan_poison(b + 32, 1);
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res = process_vm_writev(getpid(), iov_b, 2, iov_a, 2, 0);
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// CHECK: Uninitialized bytes {{.*}} at offset 2 inside
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// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
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// CHECK: #0 0x{{.*}} in {{.*}}process_vm_writev
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#else
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__msan_unpoison(&b, sizeof(b));
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res = process_vm_writev(getpid(), iov_b, 2, iov_a, 2, 0);
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assert(res == 30);
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#endif
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return 0;
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}
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