X-Git-Url: https://git.saurik.com/apple/libc.git/blobdiff_plain/70ad1dc8a19d6edd9b97aa81f32cfd65758ae97d..a9aaacca3a68bb8d74fec09d8d8681a0efda2581:/stdlib/FreeBSD/abort.c

diff --git a/stdlib/FreeBSD/abort.c b/stdlib/FreeBSD/abort.c
index 8758cf8..bac55ad 100644
--- a/stdlib/FreeBSD/abort.c
+++ b/stdlib/FreeBSD/abort.c
@@ -48,11 +48,16 @@ __FBSDID("$FreeBSD: src/lib/libc/stdlib/abort.c,v 1.11 2007/01/09 00:28:09 imp E
 
 #include "libc_private.h"
 
+#if __has_include(<CrashReporterClient.h>)
 #include <CrashReporterClient.h>
+#else
+#define CRGetCrashLogMessage() NULL
+#define CRSetCrashLogMessage(...)
+#endif
 #include "_simple.h"
 
 extern void (*__cleanup)();
-extern void __abort(void) __dead2;
+extern void __abort(void) __cold __dead2;
 
 #define TIMEOUT	10000	/* 10 milliseconds */
 
@@ -78,6 +83,17 @@ abort()
 	 */
 	sigdelset(&act.sa_mask, SIGABRT);
 
+	/*
+	 * Don't block SIGSEGV since we might trigger a segfault if the pthread
+	 * struct is corrupt. The end user behavior is that the program will
+	 * terminate with a SIGSEGV instead of a SIGABRT which is acceptable. If
+	 * the user registers a SIGSEGV handler, then they are responsible for
+	 * dealing with any corruption themselves and abort may not work.
+	 * rdar://48853131
+	 */
+	sigdelset(&act.sa_mask, SIGSEGV);
+	sigdelset(&act.sa_mask, SIGBUS);
+
 	/* <rdar://problem/7397932> abort() should call pthread_kill to deliver a signal to the aborting thread 
 	 * This helps gdb focus on the thread calling abort()
 	 */