Exception "character conversion failed" when omitting argument

[Thibaut Lepage <dourak@…>]

Hello,

The minimal example I attached simply assigns the value of the optional parameter -i to an int. When the parameter is given (./a.out -i 42), the program exits normally. But if I omit the parameter (./a.out), then the exception "character conversion failed" is raised. It doesn't matter whether the option is "required" or not, or whether a default value is given.

Configuration for which I found the bug: CentOS: 7.2 gcc: 4.8.5 boost: both 1.60.0 and 1.54.0

Configuration for which the bug does not occur: Linux Mint 17.2 gcc 4.8.4 boost 1.54.0

Regards, Thibaut Lepage

[Thibaut Lepage <dourak@…>]

Minimal example

[Kristian <klukander@…>]

At least on my system, this had to do with the linker searching for Boost libraries with another version (1.58), while I was compiling against 1.60. This was on Ubuntu 16.04 LTS. Fixing the linker paths got rid of the error.