Move ABRThandler func out of internal lib

programs/fileio.c

@@ -30,6 +30,10 @@
 #include <stdlib.h>     /* malloc, free */
 #include <string.h>     /* strcmp, strlen */
 #include <errno.h>      /* errno */
+#include <signal.h>
+#ifndef _WIN32
+#include <execinfo.h>   /* backtrace, backtrace_symbols */
+#endif
 
 #if defined (_MSC_VER)
 #  include <sys/stat.h>
@@ -124,8 +128,6 @@ static UTIL_time_t g_displayClock = UTIL_TIME_INITIALIZER;
 /*-************************************
 *  Signal (Ctrl-C trapping)
 **************************************/
-#include  <signal.h>
-
 static const char* g_artefact = NULL;
 static void INThandler(int sig)
 {
@@ -157,6 +159,59 @@ static void clearHandler(void)
 }
 
 
+/*-*********************************************************
+*  Termination signal trapping (Print debug stack trace)
+***********************************************************/
+#define MAX_STACK_FRAMES    50
+
+#ifndef _WIN32
+static void ABRThandler(int sig) {
+   const char* name;
+   void* addrlist[MAX_STACK_FRAMES + 1];
+   char** symbollist;
+   U32 addrlen, i;
+
+   switch (sig) {
+      case SIGABRT: name = "SIGABRT"; break;
+      case SIGFPE: name = "SIGFPE"; break;
+      case SIGILL: name = "SIGILL"; break;
+      case SIGINT: name = "SIGINT"; break;
+      case SIGSEGV: name = "SIGSEGV"; break;
+      default: name = "UNKNOWN";
+   }
+
+   DISPLAY("Caught %s signal, printing stack:\n", name);
+   // Retrieve current stack addresses.
+   addrlen = backtrace(addrlist, sizeof(addrlist) / sizeof(void*));
+   if (addrlen == 0) {
+      DISPLAY("\n");
+      return;
+   }
+   // Create readable strings to each frame.
+   symbollist = backtrace_symbols(addrlist, addrlen);
+   // Print the stack trace, excluding calls handling the signal.
+   for (i = ZSTD_START_SYMBOLLIST_FRAME; i < addrlen; i++) {
+      DISPLAY("%s\n", symbollist[i]);
+   }
+   free(symbollist);
+   // Reset and raise the signal so default handler runs.
+   signal(sig, SIG_DFL);
+   raise(sig);
+}
+#endif
+
+void FIO_addAbortHandler()
+{
+#ifndef _WIN32
+    signal(SIGABRT, ABRThandler);
+    signal(SIGFPE, ABRThandler);
+    signal(SIGILL, ABRThandler);
+    signal(SIGSEGV, ABRThandler);
+    signal(SIGBUS, ABRThandler);
+#endif
+}
+
+
 /*-************************************************************
 * Avoid fseek()'s 2GiB barrier with MSVC, macOS, *BSD, MinGW
 ***************************************************************/

programs/fileio.h

@@ -95,6 +95,9 @@ int FIO_decompressMultipleFilenames(const char** srcNamesTable, unsigned nbFiles
                                     const char* dictFileName);
 
 
+/* custom crash signal handler */
+void FIO_addAbortHandler(void);
+
 #if defined (__cplusplus)
 }
 #endif

programs/platform.h

@@ -148,6 +148,17 @@ static __inline int IS_CONSOLE(FILE* stdStream) {
 #endif
 
 
+#ifndef ZSTD_START_SYMBOLLIST_FRAME
+#  ifdef __linux__
+#    define ZSTD_START_SYMBOLLIST_FRAME 2
+#  elif defined __APPLE__
+#    define ZSTD_START_SYMBOLLIST_FRAME 4
+#  else
+#    define ZSTD_START_SYMBOLLIST_FRAME 0
+#  endif
+#endif
+
+
 #if defined (__cplusplus)
 }
 #endif

programs/zstdcli.c

@@ -39,7 +39,6 @@
 #endif
 #define ZSTD_STATIC_LINKING_ONLY   /* ZSTD_maxCLevel */
 #include "zstd.h"     /* ZSTD_VERSION_STRING */
-#include "zstd_internal.h" /* ZSTD_addAbortHandler */
 
 
 /*-************************************