split DUMPLOG

DUMPLOG requests the DUMPLOG feature as it does now
DUMPLOG_CORE requests the internal buffering only (used for CRASHREPORT)

This allows CRASHREPORT to access recent messages without performing
any file I/O.

include/config.h

@@ -262,8 +262,8 @@
 #endif
 
 #ifdef CRASHREPORT
-# ifndef DUMPLOG
-#  define DUMPLOG	    // required to get ^P info
+# ifndef DUMPLOG_CORE
+#  define DUMPLOG_CORE	    // required to get ^P info
 # endif
 # ifdef MACOS
 #  define PANICTRACE
@@ -726,9 +726,7 @@ typedef unsigned char uchar;
 #endif /* LIVELOG */
 
 #ifdef DUMPLOG
-#ifndef DUMPLOG_MSG_COUNT
-#define DUMPLOG_MSG_COUNT   50
-#endif /* DUMPLOG_MSG_COUNT */
+#define DUMPLOG_CORE
 #ifndef DUMPLOG_FILE
 #define DUMPLOG_FILE        "/tmp/nethack.%n.%d.log"
 /* DUMPLOG_FILE allows following placeholders:
@@ -745,5 +743,10 @@ typedef unsigned char uchar;
 */
 #endif /* DUMPLOG_FILE */
 #endif /* DUMPLOG */
+#ifdef DUMPLOG_CORE
+#ifndef DUMPLOG_MSG_COUNT
+#define DUMPLOG_MSG_COUNT   50
+#endif /* DUMPLOG_MSG_COUNT */
+#endif
 
 #endif /* CONFIG_H */

include/decl.h

@@ -917,7 +917,7 @@ struct instance_globals_s {
     boolean shop_filter;
 
     /* pline.c */
-#ifdef DUMPLOG
+#ifdef DUMPLOG_CORE
     unsigned saved_pline_index;  /* slot in saved_plines[] to use next */
     char *saved_plines[DUMPLOG_MSG_COUNT];
 #endif

include/extern.h

@@ -2356,7 +2356,7 @@ extern boolean autopick_testobj(struct obj *, boolean) NONNULLARG1;
 
 /* ### pline.c ### */
 
-#ifdef DUMPLOG
+#ifdef DUMPLOG_CORE
 extern void dumplogmsg(const char *);
 extern void dumplogfreemessages(void);
 #endif