a0193ecfe1
On s390*-linux, sigcontext just doesn't contain any information that could be used to recover the type of access, so there's no way to fix this, short of emulating the faulting instruction. Differential Revision: http://reviews.llvm.org/D19655 llvm-svn: 267960
27 lines
1.0 KiB
C
27 lines
1.0 KiB
C
// RUN: %clangxx_asan -std=c++11 -O0 %s -o %t
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// RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=READ
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// RUN: not %run %t write 2>&1 | FileCheck %s --check-prefix=WRITE
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// UNSUPPORTED: powerpc64,mips,s390
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#include <sys/mman.h>
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static volatile int sink;
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__attribute__((noinline)) void Read(int *ptr) { sink = *ptr; }
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__attribute__((noinline)) void Write(int *ptr) { *ptr = 0; }
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int main(int argc, char **argv) {
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// Writes to shadow are detected as reads from shadow gap (because of how the
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// shadow mapping works). This is kinda hard to fix. Test a random address in
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// the application part of the address space.
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void *volatile p =
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mmap(nullptr, 4096, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
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munmap(p, 4096);
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if (argc == 1)
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Read((int *)p);
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else
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Write((int *)p);
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}
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// READ: AddressSanitizer: SEGV on unknown address
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// READ: The signal is caused by a READ memory access.
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// WRITE: AddressSanitizer: SEGV on unknown address
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// WRITE: The signal is caused by a WRITE memory access.
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