diff --git a/backend/dotcode.c b/backend/dotcode.c
index 88540f87..881a442a 100644
--- a/backend/dotcode.c
+++ b/backend/dotcode.c
@@ -1088,6 +1088,7 @@ int dotcode(struct zint_symbol *symbol, const unsigned char source[], int length
 #else
     char* dot_stream;
     char* dot_array;
+    unsigned char* masked_codeword_array;
     unsigned char* codeword_array = (unsigned char *) _alloca(length * 3 * sizeof (unsigned char));
 #endif /* _MSC_VER */
 
@@ -1200,7 +1201,7 @@ int dotcode(struct zint_symbol *symbol, const unsigned char source[], int length
 #ifndef _MSC_VER
     unsigned char masked_codeword_array[data_length + 1 + ecc_length];
 #else
-    unsigned char* masked_codeword_array = (unsigned char *) _alloca((data_length + 1 + ecc_length) * sizeof (unsigned char));
+    masked_codeword_array = (unsigned char *) _alloca((data_length + 1 + ecc_length) * sizeof (unsigned char));
 #endif /* _MSC_VER */
 
     /* Evaluate data mask options */
diff --git a/backend/emf.c b/backend/emf.c
index 629085a5..9865aaed 100644
--- a/backend/emf.c
+++ b/backend/emf.c
@@ -155,14 +155,6 @@ int emf_plot(struct zint_symbol *symbol) {
     unsigned char output_buffer[12];
     uint32_t dx;
     
-#ifndef _MSC_VER
-    unsigned char local_text[bump_up(ustrlen(symbol->text) + 1)];
-    unsigned char string_buffer[2 * bump_up(ustrlen(symbol->text) + 1)];
-#else
-    unsigned char* local_text = (unsigned char*) malloc(bump_up(ustrlen(symbol->text) + 1));
-    unsigned char* string_buffer = (unsigned char*) malloc(2 * (bump_up(ustrlen(symbol->text) + 1));
-#endif
-    
     emr_header_t emr_header;
     emr_eof_t emr_eof;
     emr_createbrushindirect_t emr_createbrushindirect_fg;
@@ -181,15 +173,28 @@ int emf_plot(struct zint_symbol *symbol) {
 
     box_t box;
     
-    row_height = 0;
-    textdone = 0;
-    comp_offset = 0;
-    this_rectangle = 0;
-    this_circle = 0;
-    this_hexagon = 0;
-    dx = 0;
-    latch = 0;
-    
+#ifndef _MSC_VER
+    unsigned char local_text[bump_up(ustrlen(symbol->text) + 1)];
+    unsigned char string_buffer[2 * bump_up(ustrlen(symbol->text) + 1)];
+#else
+	unsigned char* local_text;
+	unsigned char* string_buffer;
+	emr_rectangle_t *rectangle, *row_binding;
+	emr_ellipse_t* circle;
+    emr_polygon_t* hexagon;
+    local_text = (unsigned char*) _alloca(bump_up(ustrlen(symbol->text) + 1) * sizeof (unsigned char));
+    string_buffer = (unsigned char*) _alloca(2 * bump_up(ustrlen(symbol->text) + 1) * sizeof (unsigned char));
+#endif
+    
+    row_height = 0;
+    textdone = 0;
+    comp_offset = 0;
+    this_rectangle = 0;
+    this_circle = 0;
+    this_hexagon = 0;
+    dx = 0;
+    latch = 0;
+
     for(i = 0; i < 6; i++) {
         regw[i] = '\0';
         regx[i] = '\0';
@@ -234,21 +239,11 @@ int emf_plot(struct zint_symbol *symbol) {
 
     if (strlen(symbol->fgcolour) != 6) {
         strcpy(symbol->errtxt, "Malformed foreground colour target (F41)");
-#ifdef _MSC_VER
-        free(local_text);
-        free(string_buffer);
-        free(dx_buffer);
-#endif
         return ZINT_ERROR_INVALID_OPTION;
     }
     
     if (strlen(symbol->bgcolour) != 6) {
         strcpy(symbol->errtxt, "Malformed background colour target (F42)");
-#ifdef _MSC_VER
-        free(local_text);
-        free(string_buffer);
-        free(dx_buffer);
-#endif
         return ZINT_ERROR_INVALID_OPTION;
     }
     
@@ -328,10 +323,10 @@ int emf_plot(struct zint_symbol *symbol) {
     emr_ellipse_t circle[circle_count];
     emr_polygon_t hexagon[hexagon_count];
 #else
-    rectangle = (emr_rectangle_t*) malloc(rectangle_count);
-    row_binding = (emr_rectangle_t*) malloc(rectangle_count);
-    circle = (emr_ellipse_t*) malloc(circle_count);
-    hexagon = (emr_polygon_t*) malloc(hexagon_count);
+    rectangle = (emr_rectangle_t*) _alloca(rectangle_count*sizeof(emr_rectangle_t));
+    row_binding = (emr_rectangle_t*) _alloca((symbol->rows - 1)*sizeof(emr_rectangle_t));
+    circle = (emr_ellipse_t*) _alloca(circle_count*sizeof(emr_ellipse_t));
+    hexagon = (emr_polygon_t*) _alloca(hexagon_count*sizeof(emr_polygon_t));
 #endif
     
     /* Header */
@@ -1021,15 +1016,6 @@ int emf_plot(struct zint_symbol *symbol) {
     }
     if (emf_file == NULL) {
         strcpy(symbol->errtxt, "Could not open output file (F40)");
-#ifdef _MSC_VER
-        free(local_text);
-        free(string_buffer);
-        free(dx_buffer);
-        free(rectangle);
-        free(row_binding);
-        free(circle);
-        free(hexagon);
-#endif
         return ZINT_ERROR_FILE_ACCESS;
     }
     
@@ -1231,16 +1217,5 @@ int emf_plot(struct zint_symbol *symbol) {
     } else {
         fclose(emf_file);
     }
-
-#ifdef _MSC_VER
-    free(local_text);
-    free(string_buffer);
-    free(dx_buffer);
-    free(rectangle);
-    free(row_binding);
-    free(circle);
-    free(hexagon);
-#endif
-    
     return error_number;
 }
diff --git a/backend/tif.c b/backend/tif.c
index ec87bd98..69dee266 100644
--- a/backend/tif.c
+++ b/backend/tif.c
@@ -57,6 +57,10 @@ int tif_pixel_plot(struct zint_symbol *symbol, char *pixelbuf) {
     int free_memory;
     int row, column;
     FILE *tif_file;
+#ifdef _MSC_VER
+    uint32_t* strip_offset;
+    uint32_t* strip_bytes;
+#endif
     
     tiff_header_t header;
     tiff_ifd_t ifd;
@@ -84,8 +88,8 @@ int tif_pixel_plot(struct zint_symbol *symbol, char *pixelbuf) {
     uint32_t strip_offset[strip_count];
     uint32_t strip_bytes[strip_count];
 #else
-    uint32_t* strip_offset = (uint32_t*) _alloca(strip_count);
-    uint32_t* strip_bytes = (uint32_t*) _alloca(strip_count);
+    strip_offset = (uint32_t*) _alloca(strip_count * sizeof(uint32_t));
+    strip_bytes = (uint32_t*) _alloca(strip_count * sizeof(uint32_t));
 #endif
     free_memory = 8;
     
diff --git a/win32/zint_cmdline_vc6/zint_cmdline_vc6.dsp b/win32/zint_cmdline_vc6/zint_cmdline_vc6.dsp
index 25e1a957..23a9677c 100644
--- a/win32/zint_cmdline_vc6/zint_cmdline_vc6.dsp
+++ b/win32/zint_cmdline_vc6/zint_cmdline_vc6.dsp
@@ -148,6 +148,10 @@ SOURCE=..\..\backend\eci.c
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\backend\emf.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\frontend\getopt.c
 # End Source File
 # Begin Source File
@@ -248,6 +252,10 @@ SOURCE=..\..\backend\telepen.c
 # End Source File
 # Begin Source File
 
+SOURCE=..\..\backend\tif.c
+# End Source File
+# Begin Source File
+
 SOURCE=..\..\backend\upcean.c
 # End Source File
 # End Group