28c91219c7
Summary: An implementation for `sigaltstack` to make its side effect be visible to MSAN. ``` ninja check-msan ``` Reviewers: vitalybuka, eugenis Reviewed By: eugenis Subscribers: dberris, #sanitizers, llvm-commits Tags: #sanitizers, #llvm Differential Revision: https://reviews.llvm.org/D73816 Patch by Igor Sugak.
21 lines
447 B
C++
21 lines
447 B
C++
// RUN: %clangxx_msan -O0 -g %s -o %t && not %run %t
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//
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#include <signal.h>
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#include <assert.h>
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#include <sanitizer/msan_interface.h>
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int main(void) {
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stack_t old_ss;
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assert(sigaltstack(nullptr, &old_ss) == 0);
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__msan_check_mem_is_initialized(&old_ss, sizeof(stack_t));
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stack_t ss;
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sigaltstack(&ss, nullptr);
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// CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
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// CHECK: in main {{.*}}sigaltstack.cpp:15
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return 0;
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}
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