X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Faltstack%2Faltstack.c;h=63512931f8955a7efe34b41f52df2696246701fd;hb=15966998bbeaea92e4e1b1c9f067a4142f51f680;hp=67f457bce3b90dd6cdf406b33e0ec4ffd8de0834;hpb=141e582ead507103a5f8860a3ec8c0f237d2690a;p=ccan

diff --git a/ccan/altstack/altstack.c b/ccan/altstack/altstack.c
index 67f457bc..63512931 100644
--- a/ccan/altstack/altstack.c
+++ b/ccan/altstack/altstack.c
@@ -92,7 +92,7 @@ int altstack(rlim_t max, void *(*fn)(void *), void *arg, void **out)
 	undo++;
 
 	if (setjmp(jmp) == 0) {
-		unsigned char sigstk[MINSIGSTKSZ];
+		unsigned char sigstk[SIGSTKSZ];
 		stack_t ss = { .ss_sp = sigstk, .ss_size = sizeof(sigstk) };
 		struct sigaction sa = { .sa_handler = segvjmp, .sa_flags = SA_NODEFER|SA_RESETHAND|SA_ONSTACK };
 
@@ -108,9 +108,10 @@ int altstack(rlim_t max, void *(*fn)(void *), void *arg, void **out)
 			"mov %1, %%rsp\n\t"
 			"sub $8, %%rsp\n\t"
 			"push %%r10"
-			: "=r" (rsp_save_[0]) : "0" (m + max) : "r10");
+			: "=r" (rsp_save_[0]) : "0" (m + max) : "r10", "memory");
 		out_ = fn_(arg_);
-		asm volatile ("pop %rsp");
+		asm volatile ("pop %%rsp"
+			      : : : "memory");
 		ret = 0;
 		if (out) *out = out_;
 	}