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String#{strip,lstrip,rstrip} may cause OOB access

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2016-11-17 18:00:21 +09:00
parent 2e8ed9514f
commit 92be276d76
1 changed files with 4 additions and 4 deletions
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mrbgems/mruby-string-ext/mrblib/string.rb
+4 -4
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@@ -45,7 +45,7 @@ class String
def lstrip
a = 0
z = self.size - 1
a += 1 while " \f\n\r\t\v".include?(self[a]) and a <= z
a += 1 while a <= z and " \f\n\r\t\v".include?(self[a])
(z >= 0) ? self[a..z] : ""
end
@@ -62,7 +62,7 @@ class String
def rstrip
a = 0
z = self.size - 1
z -= 1 while " \f\n\r\t\v\0".include?(self[z]) and a <= z
z -= 1 while a <= z and " \f\n\r\t\v\0".include?(self[z])
(z >= 0) ? self[a..z] : ""
end
@@ -78,8 +78,8 @@ class String
def strip
a = 0
z = self.size - 1
a += 1 while " \f\n\r\t\v".include?(self[a]) and a <= z
z -= 1 while " \f\n\r\t\v\0".include?(self[z]) and a <= z
a += 1 while a <= z and " \f\n\r\t\v".include?(self[a])
z -= 1 while a <= z and " \f\n\r\t\v\0".include?(self[z])
(z >= 0) ? self[a..z] : ""
end