[compiler-rt] [ASan] Add xfail test for PR #213546 (PR #216532)

[via llvm-commits]

https://github.com/flovent updated https://github.com/llvm/llvm-project/pull/216532

>From 9e1a058b16a37c5107a0344f411d8b7d017aab6e Mon Sep 17 00:00:00 2001
From: flovent <flbven at protonmail.com>
Date: Sun, 16 Aug 2026 09:42:28 +0800
Subject: [PATCH 1/2] Add xfail test

---
 .../invalid-pointer-pairs-vector-extract.cpp  | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 compiler-rt/test/asan/TestCases/invalid-pointer-pairs-vector-extract.cpp

diff --git a/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-vector-extract.cpp b/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-vector-extract.cpp
new file mode 100644
index 0000000000000..6de635b3f95b0
--- /dev/null
+++ b/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-vector-extract.cpp
@@ -0,0 +1,32 @@
+// REQUIRES: asserts
+// RUN: %clangxx_asan -O2 %s -o %t -mllvm -asan-detect-invalid-pointer-pair
+// RUN: %env_asan_opts=detect_invalid_pointer_pairs=1:halt_on_error=0 %run %t 2>&1 | FileCheck %s
+// RUN: %env_asan_opts=detect_invalid_pointer_pairs=2:halt_on_error=0 %run %t 2>&1 | FileCheck %s
+
+// XFAIL: *
+
+#include <stdio.h>
+#include <stdlib.h>
+
+__attribute__((noinline)) void span_lengths(const char **begins,
+                                            const char **ends, long *lengths) {
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in span_lengths
+  lengths[0] = ends[0] - begins[0];
+  // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
+  // CHECK: #{{[0-9]+ .*}} in span_lengths
+  lengths[1] = ends[1] - begins[1];
+}
+
+int main() {
+  char *a = (char *)malloc(16);
+  char *b = (char *)malloc(16);
+  const char *begins[2] = {a, b};
+  const char *ends[2] = {b + 2, a + 10};
+  long lengths[2] = {0};
+  span_lengths(begins, ends, lengths);
+  fprintf(stderr, "lengths: %ld %ld\n", lengths[0], lengths[1]);
+  free(a);
+  free(b);
+  return 0;
+}

>From e9c4d23af0ccb54b4848b63b851275961c4e9b1e Mon Sep 17 00:00:00 2001
From: flovent <flbven at protonmail.com>
Date: Sun, 16 Aug 2026 12:09:42 +0800
Subject: [PATCH 2/2] [NFC] testcase: long -> int64_t

---
 .../asan/TestCases/invalid-pointer-pairs-vector-extract.cpp  | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-vector-extract.cpp b/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-vector-extract.cpp
index 6de635b3f95b0..510ee3dc34427 100644
--- a/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-vector-extract.cpp
+++ b/compiler-rt/test/asan/TestCases/invalid-pointer-pairs-vector-extract.cpp
@@ -5,11 +5,12 @@
 
 // XFAIL: *
 
+#include <cstdint>
 #include <stdio.h>
 #include <stdlib.h>
 
 __attribute__((noinline)) void span_lengths(const char **begins,
-                                            const char **ends, long *lengths) {
+                                            const char **ends, int64_t *lengths) {
   // CHECK: ERROR: AddressSanitizer: invalid-pointer-pair
   // CHECK: #{{[0-9]+ .*}} in span_lengths
   lengths[0] = ends[0] - begins[0];
@@ -23,7 +24,7 @@ int main() {
   char *b = (char *)malloc(16);
   const char *begins[2] = {a, b};
   const char *ends[2] = {b + 2, a + 10};
-  long lengths[2] = {0};
+  int64_t lengths[2] = {0};
   span_lengths(begins, ends, lengths);
   fprintf(stderr, "lengths: %ld %ld\n", lengths[0], lengths[1]);
   free(a);