Strictly speaking `NULL + 0` is a undefined behavior; ref #5157

abdd006d · Yukihiro "Matz" Matsumoto · 2d9bf227 · abdd006d · abdd006d
Unverified Commit abdd006d authored Nov 22, 2020 by Yukihiro "Matz" Matsumoto
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mrbgems/mruby-compiler/core/parse.y mrbgems/mruby-compiler/core/parse.y +7 -2

mrbgems/mruby-compiler/core/y.tab.c mrbgems/mruby-compiler/core/y.tab.c +1259 -1638

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--- a/mrbgems/mruby-compiler/core/parse.y
+++ b/mrbgems/mruby-compiler/core/parse.y
@@ -6528,8 +6528,13 @@ mrb_parse_file_continue(mrb_state *mrb, FILE *f, const void *prebuf, size_t preb

  p = mrb_parser_new(mrb);
  if (!p) return NULL;
-  p->s = (const char *)prebuf;
-  p->send = (const char *)prebuf + prebufsize;
+  if (prebuf) {
+    p->s = (const char *)prebuf;
+    p->send = (const char *)prebuf + prebufsize;
+  }
+  else {
+    p->s = p->send = NULL;
+  }
  p->f = f;

  mrb_parser_parse(p, c);

--- a/mrbgems/mruby-compiler/core/y.tab.c
+++ b/mrbgems/mruby-compiler/core/y.tab.c