From a68b8b418bfc42c628fee605cc52dca92ab410c9 Mon Sep 17 00:00:00 2001

From: Robbie Harwood <rharwood@redhat.com>

Date: Wed, 15 Mar 2017 14:52:08 -0400

Subject: [PATCH] Fix mismatched sign comparisons

We are c99, so also migrate to `for`-loop initializers where possible for

clarity.

Signed-off-by: Robbie Harwood <rharwood@redhat.com>

Reviewed-by: Simo Sorce <simo@redhat.com>

Merges: #173

(cherry picked from commit 377e92c7ead312c530b233a1e023493ecde033d6)

---

 proxy/src/client/gpm_acquire_cred.c          | 11 ++-----

 proxy/src/client/gpm_common.c                |  4 +--

 proxy/src/client/gpm_import_and_canon_name.c |  7 ++---

 proxy/src/client/gpm_indicate_mechs.c        | 33 +++++++++-----------

 proxy/src/gp_common.h                        |  3 +-

 proxy/src/gp_config.c                        |  9 ++----

 proxy/src/gp_conv.c                          |  6 ++--

 proxy/src/gp_creds.c                         |  3 +-

 proxy/src/gp_export.c                        |  9 ++----

 proxy/src/gp_rpc_acquire_cred.c              |  5 ++-

 proxy/src/gp_rpc_debug.c                     | 26 +++++++--------

 proxy/src/gp_rpc_indicate_mechs.c            | 15 +++------

 proxy/src/gp_socket.c                        |  4 +--

 proxy/src/gp_util.c                          |  4 +--

 proxy/tests/t_utils.c                        |  4 +--

 15 files changed, 58 insertions(+), 85 deletions(-)

diff --git a/proxy/src/client/gpm_acquire_cred.c b/proxy/src/client/gpm_acquire_cred.c

index 632973d..8e30e1d 100644

--- a/proxy/src/client/gpm_acquire_cred.c

+++ b/proxy/src/client/gpm_acquire_cred.c

@@ -6,8 +6,6 @@ static int gpmint_cred_to_actual_mechs(gssx_cred *c, gss_OID_set *a)

 {

     gssx_cred_element *e;

     gss_OID_set m = GSS_C_NO_OID_SET;

-    int i;

-

     if (c->elements.elements_len) {

@@ -22,7 +20,7 @@ static int gpmint_cred_to_actual_mechs(gssx_cred *c, gss_OID_set *a)

             return ENOMEM;

         }

-        for (i = 0; i < c->elements.elements_len; i++) {

+        for (unsigned i = 0; i < c->elements.elements_len; i++) {

             e = &c->elements.elements_val[i];

             m->elements[i].elements = gp_memdup(e->mech.octet_string_val,

@@ -280,7 +278,6 @@ OM_uint32 gpm_inquire_cred(OM_uint32 *minor_status,

     uint32_t ret_maj = GSS_S_COMPLETE;

     uint32_t life;

     int cu;

-    int i;

     if (!cred) {

         *minor_status = 0;

@@ -308,8 +305,7 @@ OM_uint32 gpm_inquire_cred(OM_uint32 *minor_status,

     life = GSS_C_INDEFINITE;

     cu = -1;

-    for (i = 0; i < cred->elements.elements_len; i++) {

-

+    for (unsigned i = 0; i < cred->elements.elements_len; i++) {

         e = &cred->elements.elements_val[i];

         switch (e->cred_usage) {

@@ -402,7 +398,7 @@ OM_uint32 gpm_inquire_cred_by_mech(OM_uint32 *minor_status,

     gss_OID_desc tmp_oid;

     uint32_t ret_min = 0;

     uint32_t ret_maj = GSS_S_COMPLETE;

-    int i;

+    unsigned i;

     if (!cred) {

         *minor_status = 0;

@@ -414,7 +410,6 @@ OM_uint32 gpm_inquire_cred_by_mech(OM_uint32 *minor_status,

     }

     for (i = 0; i < cred->elements.elements_len; i++) {

-

         e = &cred->elements.elements_val[i];

         gp_conv_gssx_to_oid(&e->mech, &tmp_oid);

         if (!gss_oid_equal(&tmp_oid, mech_type)) {

diff --git a/proxy/src/client/gpm_common.c b/proxy/src/client/gpm_common.c

index 030765a..8c96986 100644

--- a/proxy/src/client/gpm_common.c

+++ b/proxy/src/client/gpm_common.c

@@ -166,7 +166,7 @@ static int gpm_send_buffer(struct gpm_ctx *gpmctx,

                            char *buffer, uint32_t length)

 {

     uint32_t size;

-    size_t wn;

+    ssize_t wn;

     size_t pos;

     bool retry;

     int ret;

@@ -232,7 +232,7 @@ static int gpm_recv_buffer(struct gpm_ctx *gpmctx,

                            char *buffer, uint32_t *length)

 {

     uint32_t size;

-    size_t rn;

+    ssize_t rn;

     size_t pos;

     int ret;

diff --git a/proxy/src/client/gpm_import_and_canon_name.c b/proxy/src/client/gpm_import_and_canon_name.c

index 83d0736..70149a3 100644

--- a/proxy/src/client/gpm_import_and_canon_name.c

+++ b/proxy/src/client/gpm_import_and_canon_name.c

@@ -275,7 +275,6 @@ OM_uint32 gpm_inquire_name(OM_uint32 *minor_status,

 {

     gss_buffer_set_t xattrs = GSS_C_NO_BUFFER_SET;

     int ret;

-    int i;

     *minor_status = 0;

@@ -306,13 +305,13 @@ OM_uint32 gpm_inquire_name(OM_uint32 *minor_status,

             *minor_status = ENOMEM;

             return GSS_S_FAILURE;

         }

-        for (i = 0; i < xattrs->count; i++) {

+        for (unsigned i = 0; i < xattrs->count; i++) {

             ret = gp_copy_gssx_to_buffer(

                         &name->name_attributes.name_attributes_val[i].attr,

                         &xattrs->elements[i]);

             if (ret) {

-                for (--i; i >= 0; i--) {

-                    free(xattrs->elements[i].value);

+                for (; i > 0; i--) {

+                    free(xattrs->elements[i-1].value);

                 }

                 free(xattrs->elements);

                 free(xattrs);

diff --git a/proxy/src/client/gpm_indicate_mechs.c b/proxy/src/client/gpm_indicate_mechs.c

index d4df923..b019a96 100644

--- a/proxy/src/client/gpm_indicate_mechs.c

+++ b/proxy/src/client/gpm_indicate_mechs.c

@@ -51,7 +51,6 @@ static uint32_t gpm_copy_gss_OID_set(uint32_t *minor_status,

     gss_OID_set n;

     uint32_t ret_maj;

     uint32_t ret_min;

-    int i;

     ret_maj = gss_create_empty_oid_set(&ret_min, &n);

     if (ret_maj) {

@@ -59,7 +58,7 @@ static uint32_t gpm_copy_gss_OID_set(uint32_t *minor_status,

         return ret_maj;

     }

-    for (i = 0; i < oldset->count; i++) {

+    for (size_t i = 0; i < oldset->count; i++) {

         ret_maj = gss_add_oid_set_member(&ret_min, &oldset->elements[i], &n);

         if (ret_maj) {

             *minor_status = ret_min;

@@ -124,7 +123,6 @@ static void gpmint_indicate_mechs(void)

     uint32_t ret_min;

     uint32_t ret_maj = 0;

     int ret = 0;

-    int i;

     memset(arg, 0, sizeof(gssx_arg_indicate_mechs));

     memset(res, 0, sizeof(gssx_res_indicate_mechs));

@@ -158,7 +156,7 @@ static void gpmint_indicate_mechs(void)

         goto done;

     }

-    for (i = 0; i < res->mechs.mechs_len; i++) {

+    for (unsigned i = 0; i < res->mechs.mechs_len; i++) {

         mi = &res->mechs.mechs_val[i];

         gi = &global_mechs.info[i];

@@ -222,7 +220,7 @@ static void gpmint_indicate_mechs(void)

         goto done;

     }

-    for (i = 0; i < res->mech_attr_descs.mech_attr_descs_len; i++) {

+    for (unsigned i = 0; i < res->mech_attr_descs.mech_attr_descs_len; i++) {

         ma = &res->mech_attr_descs.mech_attr_descs_val[i];

         ga = &global_mechs.desc[i];

@@ -249,7 +247,7 @@ static void gpmint_indicate_mechs(void)

 done:

     if (ret || ret_maj) {

-        for (i = 0; i < global_mechs.desc_len; i++) {

+        for (unsigned i = 0; i < global_mechs.desc_len; i++) {

             ga = &global_mechs.desc[i];

             gss_release_oid(&discard, &ga->attr);

             gss_release_buffer(&discard, ga->name);

@@ -258,7 +256,7 @@ done:

         }

         free(global_mechs.desc);

         global_mechs.desc = NULL;

-        for (i = 0; i < global_mechs.info_len; i++) {

+        for (unsigned i = 0; i < global_mechs.info_len; i++) {

             gi = &global_mechs.info[i];

             gss_release_oid(&discard, &gi->mech);

             gss_release_oid_set(&discard, &gi->name_types);

@@ -335,7 +333,6 @@ OM_uint32 gpm_inquire_names_for_mech(OM_uint32 *minor_status,

 {

     uint32_t ret_min;

     uint32_t ret_maj;

-    int i;

     if (!minor_status) {

         return GSS_S_CALL_INACCESSIBLE_WRITE;

@@ -351,7 +348,7 @@ OM_uint32 gpm_inquire_names_for_mech(OM_uint32 *minor_status,

         return GSS_S_FAILURE;

     }

-    for (i = 0; i < global_mechs.info_len; i++) {

+    for (unsigned i = 0; i < global_mechs.info_len; i++) {

         if (!gpm_equal_oids(global_mechs.info[i].mech, mech_type)) {

             continue;

         }

@@ -375,7 +372,6 @@ OM_uint32 gpm_inquire_mechs_for_name(OM_uint32 *minor_status,

     uint32_t discard;

     gss_OID name_type = GSS_C_NO_OID;

     int present;

-    int i;

     if (!minor_status) {

         return GSS_S_CALL_INACCESSIBLE_WRITE;

@@ -402,7 +398,7 @@ OM_uint32 gpm_inquire_mechs_for_name(OM_uint32 *minor_status,

         goto done;

     }

-    for (i = 0; i < global_mechs.info_len; i++) {

+    for (unsigned i = 0; i < global_mechs.info_len; i++) {

         ret_maj = gss_test_oid_set_member(&ret_min, name_type,

                                           global_mechs.info[i].name_types,

                                           &present);

@@ -439,7 +435,6 @@ OM_uint32 gpm_inquire_attrs_for_mech(OM_uint32 *minor_status,

     uint32_t ret_min;

     uint32_t ret_maj;

     uint32_t discard;

-    int i;

     if (!minor_status) {

         return GSS_S_CALL_INACCESSIBLE_WRITE;

@@ -451,7 +446,7 @@ OM_uint32 gpm_inquire_attrs_for_mech(OM_uint32 *minor_status,

         return GSS_S_FAILURE;

     }

-    for (i = 0; i < global_mechs.info_len; i++) {

+    for (unsigned i = 0; i < global_mechs.info_len; i++) {

         if (!gpm_equal_oids(global_mechs.info[i].mech, mech)) {

             continue;

         }

@@ -495,7 +490,6 @@ OM_uint32 gpm_inquire_saslname_for_mech(OM_uint32 *minor_status,

     uint32_t ret_min;

     uint32_t ret_maj;

     uint32_t discard;

-    int i;

     if (!minor_status) {

         return GSS_S_CALL_INACCESSIBLE_WRITE;

@@ -511,7 +505,7 @@ OM_uint32 gpm_inquire_saslname_for_mech(OM_uint32 *minor_status,

         return GSS_S_FAILURE;

     }

-    for (i = 0; i < global_mechs.info_len; i++) {

+    for (unsigned i = 0; i < global_mechs.info_len; i++) {

         if (!gpm_equal_oids(global_mechs.info[i].mech, desired_mech)) {

             continue;

         }

@@ -554,7 +548,6 @@ OM_uint32 gpm_display_mech_attr(OM_uint32 *minor_status,

     uint32_t ret_min;

     uint32_t ret_maj;

     uint32_t discard;

-    int i;

     if (!minor_status) {

         return GSS_S_CALL_INACCESSIBLE_WRITE;

@@ -570,7 +563,7 @@ OM_uint32 gpm_display_mech_attr(OM_uint32 *minor_status,

         return GSS_S_FAILURE;

     }

-    for (i = 0; i < global_mechs.desc_len; i++) {

+    for (unsigned i = 0; i < global_mechs.desc_len; i++) {

         if (!gpm_equal_oids(global_mechs.desc[i].attr, mech_attr)) {

             continue;

         }

@@ -614,7 +607,6 @@ OM_uint32 gpm_indicate_mechs_by_attrs(OM_uint32 *minor_status,

     uint32_t ret_maj;

     uint32_t discard;

     int present;

-    int i, j;

     if (!minor_status) {

         return GSS_S_CALL_INACCESSIBLE_WRITE;

@@ -636,8 +628,9 @@ OM_uint32 gpm_indicate_mechs_by_attrs(OM_uint32 *minor_status,

         return ret_maj;

     }

-    for (i = 0; i < global_mechs.info_len; i++) {

+    for (unsigned i = 0; i < global_mechs.info_len; i++) {

         if (desired_mech_attrs != GSS_C_NO_OID_SET) {

+            unsigned j;

             for (j = 0; j < desired_mech_attrs->count; j++) {

                 ret_maj = gss_test_oid_set_member(&ret_min,

                                             &desired_mech_attrs->elements[j],

@@ -657,6 +650,7 @@ OM_uint32 gpm_indicate_mechs_by_attrs(OM_uint32 *minor_status,

             }

         }

         if (except_mech_attrs != GSS_C_NO_OID_SET) {

+            unsigned j;

             for (j = 0; j < except_mech_attrs->count; j++) {

                 ret_maj = gss_test_oid_set_member(&ret_min,

                                             &except_mech_attrs->elements[j],

@@ -676,6 +670,7 @@ OM_uint32 gpm_indicate_mechs_by_attrs(OM_uint32 *minor_status,

             }

         }

         if (critical_mech_attrs != GSS_C_NO_OID_SET) {

+            unsigned j;

             for (j = 0; j < critical_mech_attrs->count; j++) {

                 ret_maj = gss_test_oid_set_member(&ret_min,

                                     &critical_mech_attrs->elements[j],

diff --git a/proxy/src/gp_common.h b/proxy/src/gp_common.h

index edc23b4..4f76e58 100644

--- a/proxy/src/gp_common.h

+++ b/proxy/src/gp_common.h

@@ -104,9 +104,8 @@ union gp_rpc_res {

 #define gp_options_find(res, opts, name, len) \

 do { \

     struct gssx_option *_v; \

-    int _o; \

     res = NULL; \

-    for (_o = 0; _o < opts.options_len; _o++) { \

+    for (unsigned _o = 0; _o < opts.options_len; _o++) { \

         _v = &opts.options_val[_o]; \

         if (gp_option_name_match(_v, name, len)) { \

             res = _v; \

diff --git a/proxy/src/gp_config.c b/proxy/src/gp_config.c

index 5c1ca02..a671333 100644

--- a/proxy/src/gp_config.c

+++ b/proxy/src/gp_config.c

@@ -57,11 +57,9 @@ static void free_str_array(const char ***a, int *count)

 void free_cred_store_elements(gss_key_value_set_desc *cs)

 {

-    int i;

-

     if (!cs->elements) return;

-    for (i = 0; i < cs->count; i++) {

+    for (unsigned i = 0; i < cs->count; i++) {

         safefree(cs->elements[i].key);

         safefree(cs->elements[i].value);

     }

@@ -146,7 +144,7 @@ static int get_krb5_mech_cfg(struct gp_service *svc,

                                      &count, &strings);

     if (ret == 0) {

         const char *p;

-        size_t len;

+        ssize_t len;

         char *key;

         svc->krb5.store.elements =

@@ -698,7 +696,6 @@ struct gp_creds_handle *gp_service_get_creds_handle(struct gp_service *svc)

 void free_config(struct gp_config **cfg)

 {

     struct gp_config *config = *cfg;

-    uint32_t i;

     if (!config) {

         return;

@@ -709,7 +706,7 @@ void free_config(struct gp_config **cfg)

     free(config->socket_name);

     free(config->proxy_user);

-    for (i=0; i < config->num_svcs; i++) {

+    for (int i = 0; i < config->num_svcs; i++) {

         gp_service_free(config->svcs[i]);

         safefree(config->svcs[i]);

     }

diff --git a/proxy/src/gp_conv.c b/proxy/src/gp_conv.c

index 71d6d9d..b874b06 100644

--- a/proxy/src/gp_conv.c

+++ b/proxy/src/gp_conv.c

@@ -599,7 +599,6 @@ done:

 int gp_conv_gssx_to_oid_set(gssx_OID_set *in, gss_OID_set *out)

 {

     gss_OID_set o;

-    int i;

     if (in->gssx_OID_set_len == 0) {

         *out = GSS_C_NO_OID_SET;

@@ -618,7 +617,7 @@ int gp_conv_gssx_to_oid_set(gssx_OID_set *in, gss_OID_set *out)

         return ENOMEM;

     }

-    for (i = 0; i < o->count; i++) {

+    for (size_t i = 0; i < o->count; i++) {

         o->elements[i].elements =

                         gp_memdup(in->gssx_OID_set_val[i].octet_string_val,

                                   in->gssx_OID_set_val[i].octet_string_len);

@@ -641,7 +640,6 @@ int gp_conv_gssx_to_oid_set(gssx_OID_set *in, gss_OID_set *out)

 int gp_conv_oid_set_to_gssx(gss_OID_set in, gssx_OID_set *out)

 {

     int ret;

-    int i;

     if (in->count == 0) {

         return 0;

@@ -653,7 +651,7 @@ int gp_conv_oid_set_to_gssx(gss_OID_set in, gssx_OID_set *out)

         return ENOMEM;

     }

-    for (i = 0; i < in->count; i++) {

+    for (size_t i = 0; i < in->count; i++) {

         ret = gp_conv_octet_string(in->elements[i].length,

                                    in->elements[i].elements,

                                    &out->gssx_OID_set_val[i]);

diff --git a/proxy/src/gp_creds.c b/proxy/src/gp_creds.c

index 6570b06..e05ad01 100644

--- a/proxy/src/gp_creds.c

+++ b/proxy/src/gp_creds.c

@@ -312,7 +312,6 @@ static int gp_get_cred_environment(struct gp_call_ctx *gpcall,

     int k_num = -1;

     int ck_num = -1;

     int cc_num = -1;

-    int d;

     memset(cs, 0, sizeof(gss_key_value_set_desc));

@@ -419,7 +418,7 @@ static int gp_get_cred_environment(struct gp_call_ctx *gpcall,

         ret = ENOMEM;

         goto done;

     }

-    for (d = 0; d < svc->krb5.store.count; d++) {

+    for (unsigned d = 0; d < svc->krb5.store.count; d++) {

         if (strcmp(svc->krb5.store.elements[d].key, "client_keytab") == 0) {

             ck_num = cs->count;

         } else if (strcmp(svc->krb5.store.elements[d].key, "keytab") == 0) {

diff --git a/proxy/src/gp_export.c b/proxy/src/gp_export.c

index 12b8d5f..3a927c9 100644

--- a/proxy/src/gp_export.c

+++ b/proxy/src/gp_export.c

@@ -288,7 +288,6 @@ uint32_t gp_export_gssx_cred(uint32_t *min, struct gp_call_ctx *gpcall,

     uint32_t acceptor_lifetime = 0;

     struct gssx_cred_element *el;

     int ret;

-    int i, j;

     struct gp_creds_handle *handle = NULL;

     gss_buffer_desc token = GSS_C_EMPTY_BUFFER;

@@ -314,8 +313,7 @@ uint32_t gp_export_gssx_cred(uint32_t *min, struct gp_call_ctx *gpcall,

     }

     out->elements.elements_len = mechanisms->count;

-    for (i = 0, j = 0; i < mechanisms->count; i++, j++) {

-

+    for (unsigned i = 0, j = 0; i < mechanisms->count; i++, j++) {

         el = &out->elements.elements_val[j];

         ret_maj = gss_inquire_cred_by_mech(&ret_min, *in,

@@ -399,11 +397,10 @@ static void gp_set_cred_options(gssx_cred *cred, gss_cred_id_t gss_cred)

     krb5_enctype *ktypes;

     bool no_ci_flags = false;

     uint32_t maj, min;

-    int i, j;

-    for (i = 0; i < cred->elements.elements_len; i++) {

+    for (unsigned i = 0; i < cred->elements.elements_len; i++) {

         ce = &cred->elements.elements_val[i];

-        for (j = 0; j < ce->options.options_len; j++) {

+        for (unsigned j = 0; j < ce->options.options_len; j++) {

             op = &ce->options.options_val[j];

             if ((op->option.octet_string_len ==

                     sizeof(KRB5_SET_ALLOWED_ENCTYPE)) &&

diff --git a/proxy/src/gp_rpc_acquire_cred.c b/proxy/src/gp_rpc_acquire_cred.c

index e9c7d56..fcb4fbe 100644

--- a/proxy/src/gp_rpc_acquire_cred.c

+++ b/proxy/src/gp_rpc_acquire_cred.c

@@ -20,7 +20,6 @@ int gp_acquire_cred(struct gp_call_ctx *gpcall,

     gss_cred_id_t *add_out_cred = NULL;

     int acquire_type = ACQ_NORMAL;

     int ret;

-    int i;

     aca = &arg->acquire_cred;

     acr = &res->acquire_cred;

@@ -63,7 +62,7 @@ int gp_acquire_cred(struct gp_call_ctx *gpcall,

             goto done;

         }

-        for (i = 0; i < desired_mechs->count; i++) {

+        for (unsigned i = 0; i < desired_mechs->count; i++) {

             desired_mech = &desired_mechs->elements[i];

             if (!gp_creds_allowed_mech(gpcall, desired_mech)) {

@@ -93,7 +92,7 @@ int gp_acquire_cred(struct gp_call_ctx *gpcall,

     cred_usage = gp_conv_gssx_to_cred_usage(aca->cred_usage);

-    for (i = 0; i < use_mechs->count; i++) {

+    for (unsigned i = 0; i < use_mechs->count; i++) {

         desired_mech = &use_mechs->elements[i];

         /* this should really be folded into an extended

          * gss_add_cred in gssapi that can accept a set of URIs

diff --git a/proxy/src/gp_rpc_debug.c b/proxy/src/gp_rpc_debug.c

index 2e2c050..a814448 100644

--- a/proxy/src/gp_rpc_debug.c

+++ b/proxy/src/gp_rpc_debug.c

@@ -19,7 +19,7 @@ void gpdbg_octet_string(octet_string *x)

         }

         fprintf(stderr, "... ] ");

     } else {

-        for (int i = 0; i < x->octet_string_len; i++) {

+        for (unsigned i = 0; i < x->octet_string_len; i++) {

             fprintf(stderr, "%x", x->octet_string_val[i]);

         }

         fprintf(stderr, " ] ");

@@ -55,7 +55,7 @@ void gpdbg_gssx_OID(gssx_OID *x)

 void gpdbg_gssx_OID_set(gssx_OID_set *x)

 {

     gp_debug_printf("{ ");

-    for (int i = 0; i < x->gssx_OID_set_len; i++) {

+    for (unsigned i = 0; i < x->gssx_OID_set_len; i++) {

         gpdbg_gssx_OID(&x->gssx_OID_set_val[i]);

     }

     gp_debug_printf("} ");

@@ -90,7 +90,7 @@ void gpdbg_gssx_option(gssx_option *x)

 #define gpdbg_extensions(x) do { \

     if ((x)->extensions.extensions_len > 0) { \

         gp_debug_printf("[ "); \

-        for (int i = 0; i < (x)->extensions.extensions_len; i++) { \

+        for (unsigned i = 0; i < (x)->extensions.extensions_len; i++) { \

             gpdbg_gssx_option(&(x)->extensions.extensions_val[i]); \

         } \

         gp_debug_printf("] "); \

@@ -100,7 +100,7 @@ void gpdbg_gssx_option(gssx_option *x)

 #define gpdbg_options(x) do { \

     if ((x)->options.options_len > 0) { \

         gp_debug_printf("[ "); \

-        for (int i = 0; i < (x)->options.options_len; i++) { \

+        for (unsigned i = 0; i < (x)->options.options_len; i++) { \

             gpdbg_gssx_option(&(x)->options.options_val[i]); \

         } \

         gp_debug_printf("] "); \

@@ -168,7 +168,7 @@ void gpdbg_gssx_call_ctx(gssx_call_ctx *x)

 #define gpdbg_name_attributes(X) do { \

     gp_debug_printf("[ "); \

     if (x->name_attributes.name_attributes_len > 0) { \

-        for (int i = 0; i < x->name_attributes.name_attributes_len; i++) { \

+        for (unsigned i = 0; i < x->name_attributes.name_attributes_len; i++) { \

             gpdbg_gssx_name_attr( \

                 &x->name_attributes.name_attributes_val[i]); \

         } \

@@ -209,7 +209,7 @@ void gpdbg_gssx_cred(gssx_cred *x)

     gp_debug_printf("{ ");

     gpdbg_gssx_name(&x->desired_name);

     gp_debug_printf("[ ");

-    for (int i = 0; i < x->elements.elements_len; i++) {

+    for (unsigned i = 0; i < x->elements.elements_len; i++) {

         gpdbg_gssx_cred_element(&x->elements.elements_val[i]);

     }

     gp_debug_printf("] ");

@@ -289,17 +289,17 @@ void gpdbg_gssx_res_indicate_mechs(gssx_res_indicate_mechs *x)

     gp_debug_printf("    GSSX_RES_INDICATE_MECHS( status: ");

     gpdbg_gssx_status(&x->status);

     gp_debug_printf("mechs: [ ");

-    for (int i = 0; i < x->mechs.mechs_len; i++) {

+    for (unsigned i = 0; i < x->mechs.mechs_len; i++) {

         gpdbg_gssx_mech_info(&x->mechs.mechs_val[i]);

     }

     gp_debug_printf("] ");

     gp_debug_printf("mech_attr_descs: [ ");

-    for (int i = 0; i < x->mech_attr_descs.mech_attr_descs_len; i++) {

+    for (unsigned i = 0; i < x->mech_attr_descs.mech_attr_descs_len; i++) {

         gpdbg_gssx_mech_attr(&x->mech_attr_descs.mech_attr_descs_val[i]);

     }

     gp_debug_printf("] ");

     gp_debug_printf("supported_extensions: [ ");

-    for (int i = 0;

+    for (unsigned i = 0;

          i < x->supported_extensions.supported_extensions_len; i++) {

         gpdbg_gssx_buffer(

             &x->supported_extensions.supported_extensions_val[i]);

@@ -602,7 +602,7 @@ void gpdbg_gssx_arg_wrap(gssx_arg_wrap *x)

     gp_debug_printf("conf_req: ");

     gp_debug_printf("%d ", (int)x->conf_req);

     gp_debug_printf("message_buffer: [ ");

-    for (int i = 0; i < x->message_buffer.message_buffer_len; i++) {

+    for (unsigned i = 0; i < x->message_buffer.message_buffer_len; i++) {

         gpdbg_octet_string(&x->message_buffer.message_buffer_val[i]);

     }

     gp_debug_printf("] ");

@@ -618,7 +618,7 @@ void gpdbg_gssx_res_wrap(gssx_res_wrap *x)

     gp_debug_printf("context_handle: ");

     GPRPCDEBUG(gssx_ctx, x->context_handle);

     gp_debug_printf("token_buffer: [ ");

-    for (int i = 0; i < x->token_buffer.token_buffer_len; i++) {

+    for (unsigned i = 0; i < x->token_buffer.token_buffer_len; i++) {

         gpdbg_octet_string(&x->token_buffer.token_buffer_val[i]);

     }

     gp_debug_printf("] ");

@@ -640,7 +640,7 @@ void gpdbg_gssx_arg_unwrap(gssx_arg_unwrap *x)

     gp_debug_printf("context_handle: ");

     gpdbg_gssx_ctx(&x->context_handle);

     gp_debug_printf("token_buffer: [ ");

-    for (int i = 0; i < x->token_buffer.token_buffer_len; i++) {

+    for (unsigned i = 0; i < x->token_buffer.token_buffer_len; i++) {

         gpdbg_octet_string(&x->token_buffer.token_buffer_val[i]);

     }

     gp_debug_printf("] ");

@@ -656,7 +656,7 @@ void gpdbg_gssx_res_unwrap(gssx_res_unwrap *x)

     gp_debug_printf("context_handle: ");

     GPRPCDEBUG(gssx_ctx, x->context_handle);

     gp_debug_printf("message_buffer: [ ");

-    for (int i = 0; i < x->message_buffer.message_buffer_len; i++) {

+    for (unsigned i = 0; i < x->message_buffer.message_buffer_len; i++) {

         gpdbg_octet_string(&x->message_buffer.message_buffer_val[i]);

     }

     gp_debug_printf("] ");

diff --git a/proxy/src/gp_rpc_indicate_mechs.c b/proxy/src/gp_rpc_indicate_mechs.c

index 8abbc7f..6ae6756 100644

--- a/proxy/src/gp_rpc_indicate_mechs.c

+++ b/proxy/src/gp_rpc_indicate_mechs.c

@@ -25,8 +25,7 @@ int gp_indicate_mechs(struct gp_call_ctx *gpcall UNUSED,

     uint32_t ret_maj;

     uint32_t ret_min;

     int present;

-    int h, i, j;

-    int ret;

+     int ret;

     ima = &arg->indicate_mechs;

     imr = &res->indicate_mechs;

@@ -53,8 +52,7 @@ int gp_indicate_mechs(struct gp_call_ctx *gpcall UNUSED,

     }

     imr->mechs.mechs_len = mech_set->count;

-    for (i = 0, h = 0; i < mech_set->count; i++, h++) {

-

+    for (unsigned i = 0, h = 0; i < mech_set->count; i++, h++) {

         mi = &imr->mechs.mechs_val[h];

         ret = gp_conv_oid_to_gssx(&mech_set->elements[i], &mi->mech);

@@ -104,8 +102,7 @@ int gp_indicate_mechs(struct gp_call_ctx *gpcall UNUSED,

             ret_min = ret;

             goto done;

         }

-        for (j = 0; j < mech_attrs->count; j++) {

-

+        for (unsigned j = 0; j < mech_attrs->count; j++) {

             ret_maj = gss_test_oid_set_member(&ret_min,

                                               &mech_attrs->elements[j],

                                               attr_set,

@@ -136,8 +133,7 @@ int gp_indicate_mechs(struct gp_call_ctx *gpcall UNUSED,

             goto done;

         }

-        for (j = 0; j < known_mech_attrs->count; j++) {

-

+        for (unsigned j = 0; j < known_mech_attrs->count; j++) {

             ret_maj = gss_test_oid_set_member(&ret_min,

                                               &known_mech_attrs->elements[j],

                                               attr_set,

@@ -205,8 +201,7 @@ int gp_indicate_mechs(struct gp_call_ctx *gpcall UNUSED,

     }

     imr->mech_attr_descs.mech_attr_descs_len = attr_set->count;

-    for (i = 0; i < attr_set->count; i++) {

-

+    for (unsigned i = 0; i < attr_set->count; i++) {

         ma = &imr->mech_attr_descs.mech_attr_descs_val[i];

         ret = gp_conv_oid_to_gssx(&attr_set->elements[i], &ma->attr);

diff --git a/proxy/src/gp_socket.c b/proxy/src/gp_socket.c

index 829ff21..17ecf7c 100644

--- a/proxy/src/gp_socket.c

+++ b/proxy/src/gp_socket.c

@@ -303,7 +303,7 @@ static void gp_socket_read(verto_ctx *vctx, verto_ev *ev)

     struct gp_buffer *rbuf;

     uint32_t size;

     bool header = false;

-    size_t rn;

+    ssize_t rn;

     int ret;

     int fd;

@@ -487,7 +487,7 @@ static void gp_socket_write(verto_ctx *vctx, verto_ev *ev)

         return;

     }

     if (vecs == 2) {

-        if (wn < sizeof(size)) {

+        if (wn < (ssize_t) sizeof(size)) {

             /* don't bother trying to handle sockets that can't

              * buffer even 4 bytes */

             gp_conn_free(wbuf->conn);

diff --git a/proxy/src/gp_util.c b/proxy/src/gp_util.c

index ca83eb3..f158b84 100644

--- a/proxy/src/gp_util.c

+++ b/proxy/src/gp_util.c

@@ -109,7 +109,7 @@ char *gp_strerror(int errnum)

 ssize_t gp_safe_read(int fd, void *buf, size_t count)

 {

     char *b = (char *)buf;

-    ssize_t len = 0;

+    size_t len = 0;

     ssize_t ret;

     do {

@@ -128,7 +128,7 @@ ssize_t gp_safe_read(int fd, void *buf, size_t count)

 ssize_t gp_safe_write(int fd, const void *buf, size_t count)

 {

     const char *b = (const char *)buf;

-    ssize_t len = 0;

+    size_t len = 0;

     ssize_t ret;

     do {