[compiler-rt] [sanitizer_common] posix_spawn test should forward DYLD_LIBRARY_PATH (PR #168795)

[Andrew Haberlandt via llvm-commits]

================
@@ -23,11 +27,18 @@ int main(int argc, char **argv) {
       argv[0], "2", "3", "4", "2", "3", "4", "2", "3", "4",
       "2",     "3", "4", "2", "3", "4", "2", "3", "4", NULL,
   };
-  char *const env[] = {
+  char *env[] = {
       "A=B", "A=B", "A=B", "A=B", "A=B", "A=B", "A=B", "A=B", "A=B", "A=B",
       "A=B", "A=B", "A=B", "A=B", "A=B", "A=B", "A=B", "A=B", "A=B", NULL,
   };
 
+  for (char **e = environ; *e; e++) {
+    if (strncmp(*e, "DYLD_LIBRARY_PATH=", sizeof("DYLD_LIBRARY_PATH=") - 1) ==
----------------
ndrewh wrote:

strcmp is not OK here because we are trying to prefix-match

https://github.com/llvm/llvm-project/pull/168795