diff options
| -rw-r--r-- | Source/cmGlobalXCodeGenerator.cxx | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx index 2cfe4da..0681ce5 100644 --- a/Source/cmGlobalXCodeGenerator.cxx +++ b/Source/cmGlobalXCodeGenerator.cxx @@ -1367,16 +1367,18 @@ void cmGlobalXCodeGenerator::CreateCustomCommands(cmXCodeObject* buildPhases, } //---------------------------------------------------------------------------- -// This function removes each occurence of the flag and returns the last one +// This function removes each occurrence of the flag and returns the last one // (i.e., the dominant flag in GCC) std::string cmGlobalXCodeGenerator::ExtractFlag(const char* flag, std::string& flags) { std::string retFlag; - std::string::size_type pos = flags.rfind(flag); + std::string::size_type lastOccurancePos = flags.rfind(flag); bool saved = false; - while(pos != flags.npos) + while(lastOccurancePos != flags.npos) { + //increment pos, we use lastOccurancePos to reduce search space on next inc + std::string::size_type pos = lastOccurancePos; if(pos == 0 || flags[pos-1]==' ') { while(pos < flags.size() && flags[pos] != ' ') @@ -1388,9 +1390,12 @@ std::string cmGlobalXCodeGenerator::ExtractFlag(const char* flag, flags[pos] = ' '; pos++; } - } saved = true; - pos = flags.rfind(flag); + } + //decrement lastOccurancePos while making sure we don't loop around + //and become a very large positive number since size_type is unsigned + lastOccurancePos = lastOccurancePos == 0 ? 0 : lastOccurancePos-1; + lastOccurancePos = flags.rfind(flag,lastOccurancePos); } return retFlag; } |