[compiler-rt] [sanitizer_common] Add experimental flag to tweak dlopen(<main program>) (PR #71715)

[Kirill Stoimenov via llvm-commits]

================
@@ -6304,10 +6304,38 @@ INTERCEPTOR(int, fclose, __sanitizer_FILE *fp) {
 #endif
 
 #if SANITIZER_INTERCEPT_DLOPEN_DLCLOSE
+// Returns 1 if key is a suffix of str, 0 otherwise
+static int internal_strcmp_suffix(const char *key, const char *str) {
+  if (!key || !str)
+    return 0;
+
+  if (internal_strlen(key) > internal_strlen(str))
+    return 0;
+
+  return !internal_strcmp(str + internal_strlen(str) - internal_strlen(key),
----------------
kstoimenov wrote:

Maybe internal_strcmp() == 0 is more clear? 

https://github.com/llvm/llvm-project/pull/71715