diff --git a/constr_CHOICE.c b/constr_CHOICE.c
index a9eb719..f0b5383 100644
--- a/constr_CHOICE.c
+++ b//constr_CHOICE.c
@@ -671,7 +671,6 @@ CHOICE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
 			case -1:
 				ctx->phase = 5;
 				RETURN(RC_FAIL);
-				continue;
 			case 1:
 				ctx->phase = 3;
 				/* Fall through */
@@ -1033,12 +1033,14 @@ CHOICE_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
 
 void
 CHOICE_free(asn_TYPE_descriptor_t *td, void *ptr, int contents_only) {
-	asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics;
+	asn_CHOICE_specifics_t *specs;
 	int present;
 
 	if(!td || !ptr)
 		return;
 
+	specs = (asn_CHOICE_specifics_t *)td->specifics;
+
 	ASN_DEBUG("Freeing %s as CHOICE", td->name);
 
 	/*
diff --git a/per_encoder.c b/per_encoder.c
index e76ef74..d7aae4f 100644
--- a/per_encoder.c
+++ b/per_encoder.c
@@ -123,7 +123,7 @@ uper_encode_internal(asn_TYPE_descriptor_t *td, asn_per_constraints_t *constrain
 	/*
 	 * Invoke type-specific encoder.
 	 */
-	if(!td || !td->uper_encoder)
+	if(!(td && td->uper_encoder))
 		ASN__ENCODE_FAILED;	/* PER is not compiled in */
 
 	po.buffer = po.tmpspace;
diff --git a/per_opentype.c b/per_opentype.c
index 03a31d2..da26841 100644
--- a/per_opentype.c
+++ b/per_opentype.c
@@ -65,7 +65,8 @@ uper_open_type_get_simple(asn_codec_ctx_t *ctx, asn_TYPE_descriptor_t *td,
 	asn_per_data_t spd;
 	size_t padding;
 
-	ASN__STACK_OVERFLOW_CHECK(ctx);
+	if(ASN__STACK_OVERFLOW_CHECK(ctx))
+		ASN__DECODE_FAILED;
 
 	ASN_DEBUG("Getting open type %s...", td->name);
 
@@ -138,7 +139,8 @@ uper_open_type_get_complex(asn_codec_ctx_t *ctx, asn_TYPE_descriptor_t *td,
 	asn_dec_rval_t rv;
 	ssize_t padding;
 
-	ASN__STACK_OVERFLOW_CHECK(ctx);
+	if(ASN__STACK_OVERFLOW_CHECK(ctx))
+		ASN__DECODE_FAILED;
 
 	ASN_DEBUG("Getting open type %s from %s", td->name,
 		per_data_string(pd));
diff --git a/per_support.c b/per_support.c
index 2481fff..4bd6318 100644
--- a/per_support.c
+++ b/per_support.c
@@ -394,8 +394,8 @@ per_put_few_bits(asn_per_outp_t *po, uint32_t bits, int obits) {
 		buf[2] = bits >> 8,
 		buf[3] = bits;
-	else {
+	else if(obits >= 24) { /* probably a coverity false positive */
 		per_put_few_bits(po, bits >> (obits - 24), 24);
 		per_put_few_bits(po, bits, obits - 24);
 	}
 
 	ASN_DEBUG("[PER out %u/%x => %02x buf+%ld]",