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fix problem with possible access to unititialized memory

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(thanks robin :) )
This commit is contained in:
Bernhard Amann 2012-07-23 17:28:27 -07:00
parent 90735c3164
commit f887535f1c
1 changed files with 4 additions and 3 deletions
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7
src/util.cc
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@ -50,13 +50,14 @@
* @param str string to unescape * @param str string to unescape
* @return A str::string without escaped characters. * @return A str::string without escaped characters.
*/ */
std::string get_unescaped_string(const std::string& str) std::string get_unescaped_string(const std::string& arg_str)
{ {
char* buf = new char [str.length() + 1]; // it will at most have the same length as str. const char* str = arg_str.c_str();
char* buf = new char [arg_str.length() + 1]; // it will at most have the same length as str.
char* bufpos = buf; char* bufpos = buf;
size_t pos = 0; size_t pos = 0;
while ( pos < str.length() ) while ( pos < arg_str.length() )
{ {
if ( str[pos] == '\\' && str[pos+1] == 'x' && if ( str[pos] == '\\' && str[pos+1] == 'x' &&
isxdigit(str[pos+2]) && isxdigit(str[pos+3]) ) isxdigit(str[pos+2]) && isxdigit(str[pos+3]) )