backtrace.c: add flags to open() so that the log file is opened user-r/w.

This way, crashlogs will really be appended. Additionally, print a time
 at the end of each backtrace.

winlayer.c: load ebacktrace1.dll instead of the old one
Makefile.common: when building with DEBUGANYWAY=1, don't omit frame pointers
 This will let us get a stack trace for crashes with the release build code.

git-svn-id: https://svn.eduke32.com/eduke32@2040 1a8010ca-5511-0410-912e-c29ae57300e0

polymer/eduke32/Makefile.common

@@ -78,7 +78,10 @@ endif
 
 ifneq (0,$(RELEASE))
     # Debugging disabled
-    debug=-fomit-frame-pointer -funswitch-loops -O$(OPTLEVEL)
+    debug=-funswitch-loops -O$(OPTLEVEL)
+    ifeq (0,$(DEBUGANYWAY))
+        debug+= -fomit-frame-pointer
+    endif
     ifneq (0,$(LTO))
         LIBS+= -flto
         debug+= -flto

polymer/eduke32/Windows/src/backtrace.c

@@ -32,6 +32,9 @@
 #include <string.h>
 #include <stdbool.h>
 
+#include <sys/stat.h>
+#include <time.h>
+
 #define BUFFER_MAX (16*1024)
 
 struct bfd_ctx {
@@ -315,13 +318,22 @@ exception_filter(LPEXCEPTION_POINTERS info)
 		SymCleanup(GetCurrentProcess());
 	}
 
-    int logfd = open("eduke32_or_mapster32.crashlog", O_APPEND | O_CREAT | O_WRONLY);
+    int logfd = open("eduke32_or_mapster32.crashlog", O_APPEND | O_CREAT | O_RDWR, S_IRUSR | S_IWUSR);
     int written;
 
     if (logfd) {
         while ((written = write(logfd, g_output, strlen(g_output)))) {
             g_output += written;
         }
+
+        time_t curtime = time(NULL);
+        struct tm *curltime = localtime(&curtime);
+        const char *theasctime = curltime ? asctime(curltime) : NULL;
+        const char *finistr = "---------------\n";
+
+        if (theasctime)
+            write(logfd, theasctime, strlen(theasctime));
+        write(logfd, finistr, strlen(finistr));
         close(logfd);
     }
 

polymer/eduke32/build/src/winlayer.c

@@ -363,7 +363,12 @@ int32_t WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, LPSTR lpCmdLine, in
 #endif
 
 #ifdef DEBUGGINGAIDS
-    LoadLibraryA("backtrace.dll");
+    LoadLibraryA("ebacktrace1.dll");
+/*
+        wm_msgbox("boo","didn't load backtrace DLL (code %d)\n", (int)GetLastError());
+    else
+        wm_msgbox("yay","loaded backtrace DLL\n");
+*/
 #endif
 
     hdc = GetDC(NULL);