D44255.diff
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	diff --git a/lib/libc/aarch64/gen/getcontextx.c b/lib/libc/aarch64/gen/getcontextx.c
	--- a/lib/libc/aarch64/gen/getcontextx.c
	+++ b/lib/libc/aarch64/gen/getcontextx.c
	@@ -32,13 +32,26 @@
	int
	__getcontextx_size(void)
	{
	+ size_t size;

	- return (sizeof(ucontext_t));
	+ size = sizeof(ucontext_t);
	+ size += sizeof(struct arm64_reg_context); /* Space for ARM64_CTX_END */
	+
	+ return (size);
	}

	int
	__fillcontextx2(char *ctx)
	{
	+ struct arm64_reg_context *reg_ctx;
	+ ucontext_t *ucp;
	+
	+ ucp = (ucontext_t *)ctx;
	+ ucp->uc_mcontext.mc_ptr = (uint64_t)(ucp + 1);
	+
	+ reg_ctx = (struct arm64_reg_context *)ucp->uc_mcontext.mc_ptr;
	+ reg_ctx->ctx_id = ARM64_CTX_END;
	+ reg_ctx->ctx_size = sizeof(struct arm64_reg_context);

	return (0);
	}
	@@ -49,7 +62,10 @@
	ucontext_t *ucp;

	ucp = (ucontext_t *)ctx;
	- return (getcontext(ucp));
	+ if (getcontext(ucp) == -1)
	+ return (-1);
	+ __fillcontextx2(ctx);
	+ return (0);
	}

	__weak_reference(__getcontextx, getcontextx);