File: pr52382.c

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.0-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 2,235,796 kB
  • sloc: cpp: 7,617,614; ansic: 1,433,901; asm: 1,058,726; python: 252,096; f90: 94,671; objc: 70,753; lisp: 42,813; pascal: 18,401; sh: 10,032; ml: 5,111; perl: 4,720; awk: 3,523; makefile: 3,401; javascript: 2,272; xml: 892; fortran: 770
file content (19 lines) | stat: -rw-r--r-- 785 bytes parent folder | download | duplicates (18)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
// 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: }