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[ubsan] Add runtime test for -fsanitize=local-bounds #120038

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Merged
merged 5 commits into from
Dec 18, 2024
Merged

[ubsan] Add runtime test for -fsanitize=local-bounds #120038

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b42a2ec
[𝘀𝗽𝗿] changes to main this commit is based on
vitalybuka Dec 16, 2024
1e33ed9
[𝘀𝗽𝗿] initial version
vitalybuka Dec 16, 2024
576387d
[𝘀𝗽𝗿] changes introduced through rebase
vitalybuka Dec 18, 2024
943f9e0
rebase
vitalybuka Dec 18, 2024
0c12eaf
rebase
vitalybuka Dec 18, 2024
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28 changes: 28 additions & 0 deletions compiler-rt/test/ubsan/TestCases/Misc/local_bounds.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
// RUN: %clangxx -fsanitize=local-bounds %s -O3 -o %t && %run %t 1
// RUN: %clangxx -fsanitize=local-bounds %s -O3 -o %t && not --crash %run %t 3

// FIXME: it's always trap for now.

#include <cstdlib>

struct S {
int k;
int l;
};

__attribute__((noinline)) void init(S *s) {
__asm__ __volatile__("" : : "r"(s) : "memory");
}

__attribute__((noinline, no_sanitize("memory"))) int test(char i) {
S a;
init(&a);
S b;
init(&b);
return ((int *)(&a))[i];
}

int main(int argc, char **argv) {
test(argv[1][0] - '0');
return 0;
}
28 changes: 28 additions & 0 deletions compiler-rt/test/ubsan_minimal/TestCases/local_bounds.cpp
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
// RUN: %clangxx -fsanitize=local-bounds %s -O3 -o %t && %run %t 1
// RUN: %clangxx -fsanitize=local-bounds %s -O3 -o %t && not --crash %run %t 3

// FIXME: it's always trap for now.

#include <cstdlib>

struct S {
int k;
int l;
};

__attribute__((noinline)) void init(S *s) {
__asm__ __volatile__("" : : "r"(s) : "memory");
}

__attribute__((noinline, no_sanitize("memory"))) int test(char i) {
S a;
init(&a);
S b;
init(&b);
return ((int *)(&a))[i];
}

int main(int argc, char **argv) {
test(argv[1][0] - '0');
return 0;
}
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