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Added comments to rb_setup_fake_str and rb_fstring_new [ci skip]

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`ptr` for these functions must refer constant string literals.
Otherwise, the result string's content can be modified/discarded
unexpectedly.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65058 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2018-10-13 09:23:56 +00:00
parent 19f9d30249
commit 83a01e6f52
1 changed files with 8 additions and 0 deletions
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8
string.c
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@ -368,12 +368,20 @@ setup_fake_str(struct RString *fake_str, const char *name, long len, int encidx)
return (VALUE)fake_str; return (VALUE)fake_str;
} }
/*
* set up a fake string which refers a static string literal.
*/
VALUE VALUE
rb_setup_fake_str(struct RString *fake_str, const char *name, long len, rb_encoding *enc) rb_setup_fake_str(struct RString *fake_str, const char *name, long len, rb_encoding *enc)
{ {
return setup_fake_str(fake_str, name, len, rb_enc_to_index(enc)); return setup_fake_str(fake_str, name, len, rb_enc_to_index(enc));
} }
/*
* rb_fstring_new and rb_fstring_cstr family create or lookup a frozen
* shared string which refers a static string literal. `ptr` must
* point a constant string.
*/
MJIT_FUNC_EXPORTED VALUE MJIT_FUNC_EXPORTED VALUE
rb_fstring_new(const char *ptr, long len) rb_fstring_new(const char *ptr, long len)
{ {