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debug.c: check codepage value [ci skip]

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* debug.c (set_debug_option): check garbage and overflow.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58225 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-03-31 07:34:46 +00:00
parent 5c9cd965be
commit cdaf6db096
1 changed files with 7 additions and 3 deletions
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10
debug.c
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@ -135,11 +135,15 @@ set_debug_option(const char *str, int len, void *arg)
# if RUBY_MSVCRT_VERSION >= 80
SET_WHEN("rtc_error", ruby_w32_rtc_error, 1);
# endif
if (NAME_MATCH_VALUE("codepage")) {
{
int ov;
size_t retlen;
ruby_w32_codepage =
ruby_scan_digits(str, len, 10, &retlen, &ov);
unsigned long n;
if (NAME_MATCH_VALUE("codepage") &&
(n = ruby_scan_digits(str, len, 10, &retlen, &ov),
(size_t)len == retlen && !ov)) {
ruby_w32_codepage = (UINT)n;
}
return;
}
#endif