| 1 | // Test that we can properly report an ODR violation between an instrumented |
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| 2 | // global and a non-instrumented global if not using private aliases. |
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| 3 | |
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| 4 | // RUN: %clang_asan -fcommon %s -fPIC -shared -mllvm -asan-use-private-alias=0 -o %dynamiclib1 -DFILE1 |
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| 5 | // RUN: %clang_asan -fcommon %s -fPIC -shared -mllvm -asan-use-private-alias=0 -o %dynamiclib2 -DFILE2 |
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| 6 | // RUN: %clang_asan -fcommon %s -fPIE %ld_flags_rpath_exe1 %ld_flags_rpath_exe2 -o %t |
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| 7 | // RUN: not %run %t 2>&1 | FileCheck %s |
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| 8 | |
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| 9 | // RUN: %clang_asan -fcommon %s -fPIC -shared -mllvm -asan-use-private-alias=1 -o %dynamiclib1 -DFILE1 |
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| 10 | // RUN: %clang_asan -fcommon %s -fPIC -shared -mllvm -asan-use-private-alias=1 -o %dynamiclib2 -DFILE2 |
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| 11 | // RUN: %run %t 2>&1 | count 0 |
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| 12 | |
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| 13 | // Unaligned accesses don't work on strict-alignment targets like SPARC. |
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| 14 | // UNSUPPORTED: sparc-target-arch |
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| 15 | |
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| 16 | // CHECK: The following global variable is not properly aligned. |
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| 17 | // CHECK: ERROR: AddressSanitizer: odr-violation |
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| 18 | #if defined(FILE1) |
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| 19 | __attribute__((aligned(8))) int x; |
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| 20 | __attribute__((aligned(1))) char y; |
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| 21 | // The gold linker puts ZZZ at the start of bss (where it is aligned) |
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| 22 | // unless we have a large alternative like Displace: |
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| 23 | __attribute__((aligned(1))) char Displace[105]; |
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| 24 | __attribute__((aligned(1))) char ZZZ[100]; |
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| 25 | #elif defined(FILE2) |
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| 26 | int ZZZ = 1; |
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| 27 | #else |
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| 28 | extern int ZZZ; |
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| 29 | int main() { |
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| 30 | return ZZZ; |
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| 31 | } |
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| 32 | #endif |
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| 33 | |
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| 34 | |
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