Mercurial > hg > CbC > CbC_llvm
view compiler-rt/test/hwasan/TestCases/stack-uar-realign.c @ 221:79ff65ed7e25
LLVM12 Original
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Tue, 15 Jun 2021 19:15:29 +0900 |
parents | 1d019706d866 |
children | 5f17cb93ff66 |
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// RUN: %clang_hwasan -g %s -o %t && not %run %t 2>&1 | FileCheck %s // Dynamic stack realignment causes debug info locations to use non-FP-relative // offsets because stack frames are realigned below FP, which means that we // can't associate addresses with stack objects in this case. Ideally we should // be able to handle this case somehow (e.g. by using a different register for // DW_AT_frame_base) but at least we shouldn't get confused by it. // Stack aliasing is not implemented on x86. // XFAIL: x86_64 __attribute((noinline)) char *buggy() { _Alignas(64) char c[64]; char *volatile p = c; return p; } int main() { char *p = buggy(); // CHECK-NOT: Potentially referenced stack objects: p[0] = 0; }