move gcc-specific signal handling out of main.c

src/CMakeLists.txt

@@ -167,6 +167,7 @@ set(SERVER_SRC
   bindings.c
   console.c
   helpers.c
+  signals.c
   main.c
   )
 
@@ -179,7 +180,9 @@ set (SERVER_SRC ${SERVER_SRC}
 endif(CURSES_FOUND)
 
 find_program(IWYU_PATH NAMES include-what-you-use iwyu)
-if(NOT IWYU_PATH)
+if(IWYU_PATH)
+  #  set(C_INCLUDE_WHAT_YOU_USE "${IWYU_PATH} -Xiwyu --no_fwd_decls")
+else(IWYU_PATH)
 	message(STATUS "Could not find the program include-what-you-use")
 endif()
 

src/main.c

@@ -17,6 +17,7 @@
 #include "gmtool.h"
 #endif
 
+#include "signals.h"
 #include "bindings.h"
 
 #include <iniparser.h>
@@ -247,39 +248,6 @@ static int parse_args(int argc, char **argv)
     return 0;
 }
 
-#ifdef HAVE_BACKTRACE
-#include <execinfo.h>
-#include <signal.h>
-static void *btrace[50];
-
-static void report_segfault(int signo, siginfo_t * sinf, void *arg)
-{
-    size_t size;
-    int fd = fileno(stderr);
-
-    fflush(stdout);
-    fputs("\n\nProgram received SIGSEGV, backtrace follows.\n", stderr);
-    size = backtrace(btrace, 50);
-    backtrace_symbols_fd(btrace, size, fd);
-    abort();
-}
-
-static int setup_signal_handler(void)
-{
-    struct sigaction act;
-
-    act.sa_flags = SA_RESETHAND | SA_SIGINFO;
-    act.sa_sigaction = report_segfault;
-    sigfillset(&act.sa_mask);
-    return sigaction(SIGSEGV, &act, NULL);
-}
-#else
-static int setup_signal_handler(void)
-{
-    return 0;
-}
-#endif
-
 void locale_init(void)
 {
     setlocale(LC_CTYPE, "");

src/signals.c

@@ -0,0 +1,36 @@
+#ifdef HAVE_BACKTRACE
+#include <execinfo.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <signal.h>
+#include <bits/types/siginfo_t.h>
+static void *btrace[50];
+
+static void report_segfault(int signo, siginfo_t * sinf, void *arg)
+{
+    size_t size;
+    int fd = fileno(stderr);
+
+    fflush(stdout);
+    fputs("\n\nProgram received SIGSEGV, backtrace follows.\n", stderr);
+    size = backtrace(btrace, 50);
+    backtrace_symbols_fd(btrace, size, fd);
+    abort();
+}
+
+int setup_signal_handler(void)
+{
+    struct sigaction act;
+
+    act.sa_flags = SA_RESETHAND | SA_SIGINFO;
+    act.sa_sigaction = report_segfault;
+    sigfillset(&act.sa_mask);
+    return sigaction(SIGSEGV, &act, 0);
+}
+#else
+int setup_signal_handler(void)
+{
+    return 0;
+}
+#endif
+

src/signals.h

@@ -0,0 +1,4 @@
+#pragma once
+
+int setup_signal_handler(void);
+