diff --git a/ChangeLog b/ChangeLog
index c2551d9f..cd18f01b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,11 +10,14 @@ Changes
 -------
 - RMQR: add ECI support
 - CODE93: don't display check characters in HRT (as per standard Figure B1)
+- GUI: separate out MAXICODE Structured Carrier Message fields
 
 Bugs
 ----
 - GUI/CLI: fix dev version test
 - library.c: error_tag(): check error_number < ZINT_ERROR on WARN_FAIL_ALL
+- vector.c: enforce minimum scale >= 0.1 and allow in GUI
+- Suppress some pedantic warnings, props codemonkey82 (#204)
 
 
 Version 2.10.0 2021-08-14
diff --git a/backend/dllversion.c b/backend/dllversion.c
index dbb89bc2..493859cd 100644
--- a/backend/dllversion.c
+++ b/backend/dllversion.c
@@ -29,4 +29,7 @@ HRESULT DllGetVersion (DLLVERSIONINFO2* pdvi)
 
 	return S_OK;
 }
+#else
+/* https://stackoverflow.com/a/26541331/664741 Suppresses gcc warning ISO C forbids an empty translation unit */
+typedef int make_iso_compilers_happy;
 #endif /* _WIN32 */
diff --git a/backend/gs1.c b/backend/gs1.c
index c0cd2d75..e14a8643 100644
--- a/backend/gs1.c
+++ b/backend/gs1.c
@@ -68,12 +68,12 @@ static int numeric(const unsigned char *data, int data_len, int offset, int min,
 }
 
 /* GS1 General Specifications 21.0.1 Figure 7.9.5-1. GS1 AI encodable character reference values.
-   Also used to determine if character in set 82 */
+   Also used to determine if character in set 82 - a value of 82 means not in */
 static const char c82[] = {
-     0,  1, -1, -1,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, /*!-0*/
-    14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, -1, /*1-@*/
+     0,  1, 82, 82,  2,  3,  4,  5,  6,  7,  8,  9, 10, 11, 12, 13, /*!-0*/
+    14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 82, /*1-@*/
     29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, /*A-P*/
-    45, 46, 47, 48, 49, 50, 51, 52, 53, 54, -1, -1, -1, -1, 55, -1, /*Q-`*/
+    45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 82, 82, 82, 82, 55, 82, /*Q-`*/
     56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, /*a-p*/
     72, 73, 74, 75, 76, 77, 78, 79, 80, 81, /*q-z*/
 };
@@ -93,7 +93,7 @@ static int cset82(const unsigned char *data, int data_len, int offset, int min,
         const unsigned char *de = d + (data_len > max ? max : data_len);
 
         for (; d < de; d++) {
-            if (*d < '!' || *d > 'z' || c82[*d - '!'] == -1) {
+            if (*d < '!' || *d > 'z' || c82[*d - '!'] == 82) {
                 *p_err_no = 3;
                 *p_err_posn = d - data + 1;
                 sprintf(err_msg, "Invalid CSET 82 character '%c'", *d);
diff --git a/backend/tif.c b/backend/tif.c
index 9d099ff1..3227413b 100644
--- a/backend/tif.c
+++ b/backend/tif.c
@@ -94,7 +94,7 @@ INTERNAL int tif_pixel_plot(struct zint_symbol *symbol, unsigned char *pixelbuf)
     int samples_per_pixel;
     int pixels_per_sample;
     unsigned char map[128];
-    tiff_color_t color_map[256] = {0};
+    tiff_color_t color_map[256] = {{0}};
     unsigned char palette[32][5];
     int color_map_size = 0;
     int extra_samples = 0;