Merge pull request #14296 from JuliaLang/yyc/trap-debugger

Use SIGTRAP to raise debugger on unix

Author: yuyichao

src/signals-unix.c

@@ -474,6 +474,9 @@ void jl_install_default_signal_handlers(void)
     if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) {
         jl_error("fatal error: Couldn't set SIGPIPE");
     }
+    if (signal(SIGTRAP, SIG_IGN) == SIG_ERR) {
+        jl_error("fatal error: Couldn't set SIGTRAP");
+    }
 
     allocate_segv_handler();
 

src/sys.c

@@ -720,7 +720,7 @@ JL_DLLEXPORT void jl_raise_debugger(void)
     if (IsDebuggerPresent() == 1)
         DebugBreak();
 #else
-    kill(getpid(), SIGINT);
+    raise(SIGTRAP);
 #endif // _OS_WINDOWS_
 }