Use MemoryContextReset; drop legacy MemoryContextResetAndDeleteChildren macro

Author: Marcus Pousette

pglite-REL_17_5_WASM

@@ -0,0 +1 @@
+/Users/admin/git/pglite-2/postgres-pglite/pglite-wasm

pglite-wasm/interactive_one.c

@@ -416,7 +416,7 @@ if (cma_rsize<0)
     }
 
     MemoryContextSwitchTo(MessageContext);
-    MemoryContextResetAndDeleteChildren(MessageContext);
+    MemoryContextReset(MessageContext);
 
     initStringInfo(&input_message);
 

pglite-wasm/pg_main.c

@@ -29,17 +29,10 @@
 // globals
 
 /*
- * Ensure MessageContext and its children are actually cleared between
- * queries. Leaving this as a no-op causes unbounded growth in
- * MessageContext when large query strings or parameters are processed,
- * eventually exhausting memory.
+ * MessageContext cleanup between queries relies on upstream semantics:
+ * MemoryContextReset() deletes child contexts since v9.5.
+ * Avoid redefining legacy MemoryContextResetAndDeleteChildren.
  */
-#undef MemoryContextResetAndDeleteChildren
-#define MemoryContextResetAndDeleteChildren(ctx) \
-    do {                                           \
-        MemoryContextDeleteChildren((ctx));         \
-        MemoryContextReset((ctx));                  \
-    } while (0)
 // #define SpinLockInit(...)
 
 

pglite-wasm/pgl_mains.c

@@ -45,7 +45,7 @@ interactive_file() {
 	 * query input buffer in the cleared MessageContext.
 	 */
 	MemoryContextSwitchTo(MessageContext);
-	MemoryContextResetAndDeleteChildren(MessageContext);
+	MemoryContextReset(MessageContext);
 
 	initStringInfo(&input_message);
     inBuf = &input_message;