Add Chromium-only Blender WebEngine parity work

blender-5.2.0/extern/gmp-source/printf/obprntffuns.c

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+/* __gmp_obstack_printf_funs -- support for gmp_obstack_printf and
+   gmp_obstack_vprintf.
+
+   THE FUNCTIONS IN THIS FILE ARE FOR INTERNAL USE ONLY.  THEY'RE ALMOST
+   CERTAIN TO BE SUBJECT TO INCOMPATIBLE CHANGES OR DISAPPEAR COMPLETELY IN
+   FUTURE GNU MP RELEASES.
+
+Copyright 2001, 2018 Free Software Foundation, Inc.
+
+This file is part of the GNU MP Library.
+
+The GNU MP Library is free software; you can redistribute it and/or modify
+it under the terms of either:
+
+  * the GNU Lesser General Public License as published by the Free
+    Software Foundation; either version 3 of the License, or (at your
+    option) any later version.
+
+or
+
+  * the GNU General Public License as published by the Free Software
+    Foundation; either version 2 of the License, or (at your option) any
+    later version.
+
+or both in parallel, as here.
+
+The GNU MP Library is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received copies of the GNU General Public License and the
+GNU Lesser General Public License along with the GNU MP Library.  If not,
+see https://www.gnu.org/licenses/.  */
+
+#include "config.h"
+
+#if HAVE_OBSTACK_VPRINTF
+
+#define _GNU_SOURCE   /* ask glibc <stdio.h> for obstack_vprintf */
+
+#include <stdarg.h>
+#include <stdio.h>    /* for obstack_vprintf */
+#include <string.h>
+#include <obstack.h>
+
+#include "gmp-impl.h"
+
+
+static int
+gmp_obstack_memory (struct obstack *ob, const char *ptr, size_t len)
+{
+  obstack_grow (ob, ptr, len);
+  return len;
+}
+
+static int
+gmp_obstack_reps (struct obstack *ob, int c, int reps)
+{
+  obstack_blank (ob, reps);
+  memset ((char *) obstack_next_free(ob) - reps, c, reps);
+  return reps;
+}
+
+const struct doprnt_funs_t  __gmp_obstack_printf_funs = {
+  (doprnt_format_t) obstack_vprintf,
+  (doprnt_memory_t) gmp_obstack_memory,
+  (doprnt_reps_t)   gmp_obstack_reps
+};
+
+#else
+typedef int __gmp_dummy_typedef;
+#endif /* HAVE_OBSTACK_VPRINTF */