[compiler-rt] [sanitizer_common] Implement address sanitizer on AIX: add platform specific functionality (4/n) (PR #131868)

[Jake Egan via llvm-commits]

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@@ -121,9 +121,23 @@ void MemoryMappingLayout::DumpListOfModules(
     InternalMmapVectorNoCtor<LoadedModule> *modules) {
   Reset();
   InternalMmapVector<char> module_name(kMaxPathLength);
+#  if SANITIZER_AIX
+  InternalMmapVector<char> module_displayname(kMaxPathLength);
+  MemoryMappedSegment segment(module_name.data(), module_name.size(),
+                              module_displayname.data(),
+                              module_displayname.size());
+#  else
   MemoryMappedSegment segment(module_name.data(), module_name.size());
+#  endif
   for (uptr i = 0; Next(&segment); i++) {
+// On AIX, filename contains /proc/<pid>/object/<object_id> to pass to the
+// symbolizer, so we use displayname to contain the real path to present to
+// users
+#  if SANITIZER_AIX
+    const char *cur_name = segment.displayname;
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jakeegan wrote:

There are some test failures related to this that I missed, so I'll have to update it

https://github.com/llvm/llvm-project/pull/131868