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-rw-r--r--newlib/libc/include/machine/setjmp.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/newlib/libc/include/machine/setjmp.h b/newlib/libc/include/machine/setjmp.h
index ec6644a7f..b25684dd5 100644
--- a/newlib/libc/include/machine/setjmp.h
+++ b/newlib/libc/include/machine/setjmp.h
@@ -381,6 +381,13 @@ typedef int sigjmp_buf[_JBLEN+1+(sizeof (sigset_t)/sizeof (int))];
#define __SIGMASK_FUNC sigprocmask
#endif
+#ifdef __CYGWIN__
+/* Per POSIX, siglongjmp has to be implemented as function. Cygwin
+ provides functions for both, siglongjmp and sigsetjmp since 2.2.0. */
+extern void siglongjmp (sigjmp_buf, int) __attribute__ ((__noreturn__));
+extern int sigsetjmp (sigjmp_buf, int);
+#endif
+
#if defined(__GNUC__)
#define sigsetjmp(env, savemask) \
@@ -418,8 +425,8 @@ typedef int sigjmp_buf[_JBLEN+1+(sizeof (sigset_t)/sizeof (int))];
are equivalent to sigsetjmp/siglongjmp when not saving the signal mask.
New applications should use sigsetjmp/siglongjmp instead. */
#ifdef __CYGWIN__
-extern void _longjmp(jmp_buf, int);
-extern int _setjmp(jmp_buf);
+extern void _longjmp (jmp_buf, int) __attribute__ ((__noreturn__));
+extern int _setjmp (jmp_buf);
#else
#define _setjmp(env) sigsetjmp ((env), 0)
#define _longjmp(env, val) siglongjmp ((env), (val))