Derive the MINFO format version from RDUMP_FORMAT_VERSION

MINFO hardcoded "3" while the dump header uses the RDUMP_FORMAT_VERSION macro;
stringize the macro (RDUMP_FORMAT_VERSION_STR) so bumping the version updates
both in one place.

https://claude.ai/code/session_017skw8BsHkF8wur7Pf4G9W5

Author: claude

php_rdump.h

@@ -20,6 +20,10 @@ extern zend_module_entry rdump_module_entry;
 
 /* RDUMP dump-file format version we emit (must match reli's reader range). */
 #define RDUMP_FORMAT_VERSION 3
+/* Stringized form for display (keeps MINFO in step with the numeric value). */
+#define RDUMP_STRINGIZE_(x) #x
+#define RDUMP_STRINGIZE(x) RDUMP_STRINGIZE_(x)
+#define RDUMP_FORMAT_VERSION_STR RDUMP_STRINGIZE(RDUMP_FORMAT_VERSION)
 
 /* Per-(thread-)module state, holding the INI-configured auto-dump settings
  * and a re-entrancy guard for the zend_error_cb OOM hook. */

rdump.c

@@ -1108,7 +1108,7 @@ PHP_MINFO_FUNCTION(rdump)
     php_info_print_table_start();
     php_info_print_table_row(2, "rdump support", "enabled");
     php_info_print_table_row(2, "extension version", PHP_RDUMP_VERSION);
-    php_info_print_table_row(2, "RDUMP format version", "3");
+    php_info_print_table_row(2, "RDUMP format version", RDUMP_FORMAT_VERSION_STR);
     php_info_print_table_row(2, "target php version tag", php_version);
     php_info_print_table_row(2, "memory_limit auto-dump", "available (zend_error_cb)");
     php_info_print_table_end();