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* string.c (rb_str_buf_cat_escaped_char): get rid of buffer

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overflow on platforms int is bigger than 32bit, and warnings.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28190 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2010-06-06 13:37:23 +00:00
parent 0363b91bf6
commit 88eb029a2c
2 changed files with 13 additions and 3 deletions
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7
ChangeLog
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@ -1,3 +1,8 @@
Sun Jun 6 22:37:11 2010 Nobuyoshi Nakada <nobu@ruby-lang.org>
* string.c (rb_str_buf_cat_escaped_char): get rid of buffer
overflow on platforms int is bigger than 32bit, and warnings.
Sun Jun 6 19:55:21 2010 Tanaka Akira <akr@fsij.org>
* array.c (rb_ary_product): clear uninitialized elements in temporary
@ -40,7 +45,7 @@ Sat Jun 5 20:30:49 2010 NARUSE, Yui <naruse@ruby-lang.org>
* re.c (rb_reg_expr_str): use rb_str_buf_cat_escaped_char
when resenc is given: for Regexp#inspect or error message.
* re.c (rb_reg_desc): add 'n' for ENCODING_NONE.
* re.c (rb_reg_desc): add 'n' for ENCODING_NONE.
Sat Jun 5 01:20:14 2010 NARUSE, Yui <naruse@ruby-lang.org>

9
string.c
View file

@ -4081,9 +4081,14 @@ str_cat_char(VALUE str, unsigned int c, rb_encoding *enc)
#define CHAR_ESC_LEN 13 /* sizeof(\x{ hex of 32bit unsigned int } \0) */
int
rb_str_buf_cat_escaped_char(VALUE result, unsigned int c, int unicode_p) {
rb_str_buf_cat_escaped_char(VALUE result, unsigned int c, int unicode_p)
{
char buf[CHAR_ESC_LEN + 1];
int l;
#if SIZEOF_INT > 4
c &= 0xffffffff;
#endif
if (unicode_p) {
if (c < 0x7F && ISPRINT(c)) {
snprintf(buf, CHAR_ESC_LEN, "%c", c);
@ -4103,7 +4108,7 @@ rb_str_buf_cat_escaped_char(VALUE result, unsigned int c, int unicode_p) {
snprintf(buf, CHAR_ESC_LEN, "\\x{%X}", c);
}
}
l = strlen(buf);
l = (int)strlen(buf); /* CHAR_ESC_LEN cannot exceed INT_MAX */
rb_str_buf_cat(result, buf, l);
return l;
}