math/py-matplotlib: unbreak build with Clang 6 (C++14 by default)

extern/ttconv/pprdrv_tt.cpp:245:41: error: cast from pointer to smaller type 'char' loses information
                font->Copyright[length]=(char)NULL;
                                        ^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:261:42: error: cast from pointer to smaller type 'char' loses information
                font->FamilyName[length]=(char)NULL;
                                         ^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:277:37: error: cast from pointer to smaller type 'char' loses information
                font->Style[length]=(char)NULL;
                                    ^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:293:40: error: cast from pointer to smaller type 'char' loses information
                font->FullName[length]=(char)NULL;
                                       ^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:309:39: error: cast from pointer to smaller type 'char' loses information
                font->Version[length]=(char)NULL;
                                      ^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:325:40: error: cast from pointer to smaller type 'char' loses information
                font->PostName[length]=(char)NULL;
                                       ^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:340:42: error: cast from pointer to smaller type 'char' loses information
                font->PostName[length/2]=(char)NULL;
                                         ^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:355:41: error: cast from pointer to smaller type 'char' loses information
                font->Trademark[length]=(char)NULL;
                                        ^~~~~~~~~~
extern/ttconv/pprdrv_tt.cpp:1041:19: error: cast from pointer to smaller type 'char' loses information
        temp[len]=(char)NULL;   /* a buffer and make it ASCIIz. */
                  ^~~~~~~~~~

Reported by:	antoine (via bug 224669)

1 files changed, 111 insertions, 0 deletions

diff --git a/math/py-matplotlib/files/patch-extern_ttconv_pprdrv__tt.cpp b/math/py-matplotlib/files/patch-extern_ttconv_pprdrv__tt.cpp
new file mode 100644
index 000000000000..09ed34033f35
--- /dev/null
+++ b/math/py-matplotlib/files/patch-extern_ttconv_pprdrv__tt.cpp
@@ -0,0 +1,111 @@
+extern/ttconv/pprdrv_tt.cpp:245:41: error: cast from pointer to smaller type 'char' loses information
+                font->Copyright[length]=(char)NULL;
+                                        ^~~~~~~~~~
+extern/ttconv/pprdrv_tt.cpp:261:42: error: cast from pointer to smaller type 'char' loses information
+                font->FamilyName[length]=(char)NULL;
+                                         ^~~~~~~~~~
+extern/ttconv/pprdrv_tt.cpp:277:37: error: cast from pointer to smaller type 'char' loses information
+                font->Style[length]=(char)NULL;
+                                    ^~~~~~~~~~
+extern/ttconv/pprdrv_tt.cpp:293:40: error: cast from pointer to smaller type 'char' loses information
+                font->FullName[length]=(char)NULL;
+                                       ^~~~~~~~~~
+extern/ttconv/pprdrv_tt.cpp:309:39: error: cast from pointer to smaller type 'char' loses information
+                font->Version[length]=(char)NULL;
+                                      ^~~~~~~~~~
+extern/ttconv/pprdrv_tt.cpp:325:40: error: cast from pointer to smaller type 'char' loses information
+                font->PostName[length]=(char)NULL;
+                                       ^~~~~~~~~~
+extern/ttconv/pprdrv_tt.cpp:340:42: error: cast from pointer to smaller type 'char' loses information
+                font->PostName[length/2]=(char)NULL;
+                                         ^~~~~~~~~~
+extern/ttconv/pprdrv_tt.cpp:355:41: error: cast from pointer to smaller type 'char' loses information
+                font->Trademark[length]=(char)NULL;
+                                        ^~~~~~~~~~
+extern/ttconv/pprdrv_tt.cpp:1041:19: error: cast from pointer to smaller type 'char' loses information
+        temp[len]=(char)NULL;   /* a buffer and make it ASCIIz. */
+                  ^~~~~~~~~~
+
+--- extern/ttconv/pprdrv_tt.cpp.orig	2016-09-09 02:50:50 UTC
++++ extern/ttconv/pprdrv_tt.cpp
+@@ -242,7 +242,7 @@ void Read_name(struct TTFONT *font)
+             {
+                 font->Copyright = (char*)calloc(sizeof(char),length+1);
+                 strncpy(font->Copyright,(const char*)strings+offset,length);
+-                font->Copyright[length]=(char)NULL;
++                font->Copyright[length]='\0';
+                 replace_newlines_with_spaces(font->Copyright);
+ 
+ #ifdef DEBUG_TRUETYPE
+@@ -258,7 +258,7 @@ void Read_name(struct TTFONT *font)
+                 free(font->FamilyName);
+                 font->FamilyName = (char*)calloc(sizeof(char),length+1);
+                 strncpy(font->FamilyName,(const char*)strings+offset,length);
+-                font->FamilyName[length]=(char)NULL;
++                font->FamilyName[length]='\0';
+                 replace_newlines_with_spaces(font->FamilyName);
+ 
+ #ifdef DEBUG_TRUETYPE
+@@ -274,7 +274,7 @@ void Read_name(struct TTFONT *font)
+                 free(font->Style);
+                 font->Style = (char*)calloc(sizeof(char),length+1);
+                 strncpy(font->Style,(const char*)strings+offset,length);
+-                font->Style[length]=(char)NULL;
++                font->Style[length]='\0';
+                 replace_newlines_with_spaces(font->Style);
+ 
+ #ifdef DEBUG_TRUETYPE
+@@ -290,7 +290,7 @@ void Read_name(struct TTFONT *font)
+                 free(font->FullName);
+                 font->FullName = (char*)calloc(sizeof(char),length+1);
+                 strncpy(font->FullName,(const char*)strings+offset,length);
+-                font->FullName[length]=(char)NULL;
++                font->FullName[length]='\0';
+                 replace_newlines_with_spaces(font->FullName);
+ 
+ #ifdef DEBUG_TRUETYPE
+@@ -306,7 +306,7 @@ void Read_name(struct TTFONT *font)
+                 free(font->Version);
+                 font->Version = (char*)calloc(sizeof(char),length+1);
+                 strncpy(font->Version,(const char*)strings+offset,length);
+-                font->Version[length]=(char)NULL;
++                font->Version[length]='\0';
+                 replace_newlines_with_spaces(font->Version);
+ 
+ #ifdef DEBUG_TRUETYPE
+@@ -322,7 +322,7 @@ void Read_name(struct TTFONT *font)
+                 free(font->PostName);
+                 font->PostName = (char*)calloc(sizeof(char),length+1);
+                 strncpy(font->PostName,(const char*)strings+offset,length);
+-                font->PostName[length]=(char)NULL;
++                font->PostName[length]='\0';
+                 replace_newlines_with_spaces(font->PostName);
+ 
+ #ifdef DEBUG_TRUETYPE
+@@ -337,7 +337,7 @@ void Read_name(struct TTFONT *font)
+                 free(font->PostName);
+                 font->PostName = (char*)calloc(sizeof(char),length+1);
+                 utf16be_to_ascii(font->PostName, (char *)strings+offset, length);
+-                font->PostName[length/2]=(char)NULL;
++                font->PostName[length/2]='\0';
+                 replace_newlines_with_spaces(font->PostName);
+ 
+ #ifdef DEBUG_TRUETYPE
+@@ -352,7 +352,7 @@ void Read_name(struct TTFONT *font)
+             {
+                 font->Trademark = (char*)calloc(sizeof(char),length+1);
+                 strncpy(font->Trademark,(const char*)strings+offset,length);
+-                font->Trademark[length]=(char)NULL;
++                font->Trademark[length]='\0';
+                 replace_newlines_with_spaces(font->Trademark);
+ 
+ #ifdef DEBUG_TRUETYPE
+@@ -1038,7 +1038,7 @@ const char *ttfont_CharStrings_getname(struct TTFONT *
+         }
+ 
+         strncpy(temp,ptr,len);  /* Copy the pascal string into */
+-        temp[len]=(char)NULL;   /* a buffer and make it ASCIIz. */
++        temp[len]='\0';   /* a buffer and make it ASCIIz. */
+ 
+         return temp;
+     }