From 01907f7389da4d44593bc7952fa4476af8c23abd Mon Sep 17 00:00:00 2001
From: Roger Peppe <rogpeppe@gmail.com>
Date: Fri, 29 Jul 2016 15:23:39 +0100
Subject: [PATCH] lift for-loop declarations for pre-C99 compatibility

---
 port.c   | 3 ++-
 v2.c     | 9 ++++++---
 varint.c | 3 ++-
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/port.c b/port.c
index f3193b4..c7e7d07 100644
--- a/port.c
+++ b/port.c
@@ -126,8 +126,9 @@ void
 macaroon_bin2hex(const unsigned char* bin, size_t bin_sz, char* hex)
 {
     static const char hexes[] = "0123456789abcdef";
+    size_t i;
 
-    for (size_t i = 0; i < bin_sz; ++i)
+    for (i = 0; i < bin_sz; ++i)
     {
         hex[2 * i + 0] = hexes[(bin[i] >> 4) & 0xfu];
         hex[2 * i + 1] = hexes[bin[i] & 0xfU];
diff --git a/v2.c b/v2.c
index ad778f4..6700a2f 100644
--- a/v2.c
+++ b/v2.c
@@ -62,12 +62,13 @@ optional_field_size(const struct slice* f)
 size_t
 macaroon_serialize_size_hint_v2(const struct macaroon* M)
 {
+    size_t i;
     size_t sz = 4 /* 1 for version, 3 for 3 EOS markers */
               + optional_field_size(&M->location)
               + required_field_size(&M->identifier)
               + required_field_size(&M->signature);
 
-    for (size_t i = 0; i < M->num_caveats; ++i)
+    for (i = 0; i < M->num_caveats; ++i)
     {
         sz += optional_field_size(&M->caveats[i].cl);
         sz += required_field_size(&M->caveats[i].cid);
@@ -117,6 +118,7 @@ macaroon_serialize_v2(const struct macaroon* M,
 {
     unsigned char* ptr = data;
     unsigned char* const end = ptr + data_sz;
+    size_t i;
     if (ptr >= end) goto emit_buf_too_small;
     *ptr = 2;
     ++ptr;
@@ -124,7 +126,7 @@ macaroon_serialize_v2(const struct macaroon* M,
     if (emit_required_field(TYPE_IDENTIFIER, &M->identifier, &ptr, end) < 0) goto emit_buf_too_small;
     if (emit_eos(&ptr, end) < 0) goto emit_buf_too_small;
 
-    for (size_t i = 0; i < M->num_caveats; ++i)
+    for (i = 0; i < M->num_caveats; ++i)
     {
         const struct caveat* C = &M->caveats[i];
         if (emit_optional_field(TYPE_LOCATION, &C->cl, &ptr, end) < 0) goto emit_buf_too_small;
@@ -221,6 +223,7 @@ macaroon_deserialize_v2(const unsigned char* data, size_t data_sz,
                         enum macaroon_returncode* err)
 {
     const unsigned char* const end = data + data_sz;
+    size_t i;
 
     if (data >= end || *data != 2)
     {
@@ -286,7 +289,7 @@ macaroon_deserialize_v2(const unsigned char* data, size_t data_sz,
     ptr = copy_slice(&signature.data, &M->signature, ptr);
     M->num_caveats = caveats_sz;
 
-    for (size_t i = 0; i < caveats_sz; ++i)
+    for (i = 0; i < caveats_sz; ++i)
     {
         ptr = copy_slice(&caveats[i].cid, &M->caveats[i].cid, ptr);
         ptr = copy_slice(&caveats[i].vid, &M->caveats[i].vid, ptr);
diff --git a/varint.c b/varint.c
index 9ea9b7f..eaba626 100644
--- a/varint.c
+++ b/varint.c
@@ -35,8 +35,9 @@ unpackvarint(const unsigned char* ptr,
              uint64_t* value)
 {
     uint64_t result = 0;
+    unsigned int shift;
 
-    for (unsigned shift = 0; shift <= 63 && ptr < end; shift += 7)
+    for (shift = 0; shift <= 63 && ptr < end; shift += 7)
     {
         uint64_t byte = *ptr & 0xff;
         ptr++;