Segmentation fault in mana_launch when passing an odd number of arguments

[dariomnz]

Description

A simple "Hello World" program results in a SIGSEGV when executed via mana_launch if the number of command-line arguments is odd. The same executable runs correctly when launched with dmtcp_launch or directly via the shell.

Steps to Reproduce

Code (hello.c):

#include <stdio.h>
int main() {
    printf("Hello world!\n");
    return 0;
}

Compile: gcc hello.c -o hello

Run with ODD arguments (Fails): mana_launch ./hello arg1
Run with EVEN arguments (Works): mana_launch ./hello arg1 arg2

Run with ODD arguments (Works): dmtcp_launch ./hello arg1
Run with EVEN arguments (Works): dmtcp_launch ./hello arg1 arg2

Run with ODD arguments (Works): ./hello arg1
Run with EVEN arguments (Works): ./hello arg1 arg2

Suspected Cause

Alignment issue