d2c5e49015
There was one test that was using a subshell. This is not supported by lit's internal shell. Rewrite the test to use the readfile substitution. Reviewers: alexander-shaposhnikov, fmayer Reviewed By: alexander-shaposhnikov, fmayer Pull Request: https://github.com/llvm/llvm-project/pull/165142
32 lines
912 B
C++
32 lines
912 B
C++
/// From msan/allocator_mapping.cpp
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/// Test that a module constructor can not map memory over the NSan heap
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/// (without MAP_FIXED, of course).
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// RUN: %clangxx_nsan -O0 %s -o %t_1
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// RUN: %run %t_1 > %t.heap_address
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// RUN: %clangxx_nsan -O0 -DHEAP_ADDRESS=%{readfile:%t.heap_address} %s -o %t_2 && %run %t_2
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#ifdef HEAP_ADDRESS
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struct A {
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A() {
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void *const hint = reinterpret_cast<void *>(HEAP_ADDRESS);
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void *p = mmap(hint, 4096, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
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// This address must be already mapped. Check that mmap() succeeds, but at a
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// different address.
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assert(p != reinterpret_cast<void *>(-1));
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assert(p != hint);
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}
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} a;
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#endif
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int main() {
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void *p = malloc(10);
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printf("0x%zx\n", reinterpret_cast<size_t>(p) & (~0xfff));
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free(p);
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}
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