From 2e6fb6a109de5214d45747d77ab5a9d96634c222 Mon Sep 17 00:00:00 2001
From: oxy <virtual_worlds@gmx.de>
Date: Mon, 24 Jul 2017 09:57:29 +0200
Subject: [PATCH] compile error fixed

---
 backend/aztec.c   | 18 +++++++++++++-----
 backend/aztec.h   |  2 +-
 backend/gridmtx.c |  2 +-
 3 files changed, 15 insertions(+), 7 deletions(-)

diff --git a/backend/aztec.c b/backend/aztec.c
index 1099fb87..c5e1e3ed 100644
--- a/backend/aztec.c
+++ b/backend/aztec.c
@@ -42,7 +42,7 @@
 
 static int AztecMap[22801];
 
-static int count_doubles(const unsigned char source[], int posn, const size_t src_len) {
+static int count_doubles(const unsigned char source[], const int posn, const size_t src_len) {
     int c = 0;
     int i = posn;
     int cond = 1;
@@ -110,7 +110,7 @@ static int count_spaces(char source[], int posn, int length) {
     return c;
 }
 
-static char get_next_mode(char encode_mode[], const size_t src_len, int posn) {
+static char get_next_mode(char encode_mode[], const size_t src_len, const int posn) {
     int i = posn;
     
     do {
@@ -125,16 +125,24 @@ static char get_next_mode(char encode_mode[], const size_t src_len, int posn) {
 
 static int aztec_text_process(const unsigned char source[], const size_t src_len, char binary_string[], const int gs1, const int eci, const int debug) {
     
-    char encode_mode[src_len];
+    char *encode_mode;
     int i, j;
     char current_mode;
     int count;
     char next_mode;
-    char reduced_source[src_len];
-    char reduced_encode_mode[src_len];
+    char *reduced_source;
+    char *reduced_encode_mode;
     int reduced_length;
     int byte_mode = 0;
     
+    encode_mode=(char*)alloca(src_len);
+    reduced_source=(char*)alloca(src_len);
+    reduced_encode_mode=(char*)alloca(src_len);
+
+    if ((!encode_mode) ||
+        (!reduced_source) ||
+        (!reduced_encode_mode)) return -1;
+
     for (i = 0; i < src_len; i++) {
         if (source[i] > 128) {
             encode_mode[i] = 'B';
diff --git a/backend/aztec.h b/backend/aztec.h
index 2f93a8ee..c8efc249 100644
--- a/backend/aztec.h
+++ b/backend/aztec.h
@@ -79,7 +79,7 @@ static const int AztecSymbolChar[128] = {
     25, 26, 27, 29, 25, 30, 26, 27
 };
 
-static const char AztecModes[128] = "BMMMMMMMMMMMMXBBBBBBBBBBBBBMMMMMXPPPPPPPPPPPXPXPDDDDDDDDDDPPPPPPMUUUUUUUUUUUUUUUUUUUUUUUUUUPMPMMMLLLLLLLLLLLLLLLLLLLLLLLLLLPMPMM";
+static const char AztecModes[129] = "BMMMMMMMMMMMMXBBBBBBBBBBBBBMMMMMXPPPPPPPPPPPXPXPDDDDDDDDDDPPPPPPMUUUUUUUUUUUUUUUUUUUUUUUUUUPMPMMMLLLLLLLLLLLLLLLLLLLLLLLLLLPMPMM";
 
 static const unsigned short int AztecSizes[32] = {
     /* Codewords per symbol */
diff --git a/backend/gridmtx.c b/backend/gridmtx.c
index 8be12c18..5d23f7ad 100644
--- a/backend/gridmtx.c
+++ b/backend/gridmtx.c
@@ -343,7 +343,7 @@ void add_shift_char(char binary[], int shifty) {
     bin_append(glyph, 6, binary);
 }
 
-static int gm_encode(int gbdata[], const size_t length, char binary[], int reader, int eci, int debug) {
+static int gm_encode(int gbdata[], const size_t length, char binary[],const int reader,const int eci, int debug) {
     /* Create a binary stream representation of the input data.
        7 sets are defined - Chinese characters, Numerals, Lower case letters, Upper case letters,
        Mixed numerals and latters, Control characters and 8-bit binary data */