allocate number of hdmx widths read, per #63

git-svn-id: svn://tug.org/texlive/trunk/Build/source@69520 c570f23f-e606-0410-a88d-b1316a301751

texk/ttfdump/ChangeLog

@@ -1,3 +1,13 @@
+2024-01-21  Karl Berry  <karl@freefriends.org>
+
+	* libttf/hdmx.c (ttfLoadHDMX): calloc the number of widths that we
+	actually read, namely numGlyphs+1. I don't understand why this
+	is numGlyphs+1 and not numGlyphs, per
+https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6hdmx.html
+	but since the program has always read numGlyphs+1, just leaving it.
+	Report (and alternate fix) from attackoncs,
+	https://github.com/TeX-Live/texlive-source/pull/63
+
 2023-08-13  TANAKA Takuji  <ttk@t-lab.opal.ne.jp>
 
 	* tests/ttfdump.test: Make easier to test on Windows.

texk/ttfdump/libttf/hdmx.c

@@ -43,7 +43,7 @@ static void ttfLoadHDMX (FILE *fp,HDMXPtr hdmx,ULONG offset)
 	{
 	    hdmx->Records[i].PixelSize = ttfGetBYTE(fp);
 	    hdmx->Records[i].MaxWidth = ttfGetBYTE(fp);
-	    hdmx->Records[i].Width = XCALLOC (hdmx->size, BYTE);
+	    hdmx->Records[i].Width = XCALLOC (hdmx->numGlyphs+1, BYTE);
 	    fread ((hdmx->Records+i)->Width, sizeof(BYTE), hdmx->numGlyphs+1,fp);
 	}
 }