| // RUN: %clang -target x86_64-unknown-linux-gnu -S -emit-llvm -o - -fsanitize=address %s | FileCheck %s |
| |
| // Ensure that ASan properly instruments a load into a global where the index |
| // happens to be within the padding after the global which is used for the |
| // redzone. |
| |
| // This global is 400 bytes long, but gets padded with 112 bytes for redzones, |
| // rounding the total size after instrumentation to 512. |
| int global_array[100] = {-1}; |
| |
| // This access is 412 bytes after the start of the global: past the end of the |
| // uninstrumented array, but within the bounds of the extended instrumented |
| // array. We should ensure this is still instrumented. |
| int main(void) { return global_array[103]; } |
| |
| // CHECK: @main |
| // CHECK-NEXT: entry: |
| // CHECK: call void @__asan_report_load4 |
| // CHECK: } |
