Comment 40 for bug 227945

No, the build log [1,2] shows that it's a compile error:

c++ -Wall -Wconversion -Wpointer-arith -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wcast-align -Wno-long-long -Os -g -c -o nsIPCModule.o -include mozilla-config.h -include xpcom-config.h `pkg-config --cflags-only-I libxul-unstable` -I ../src -I ../public -fno-rtti -fno-exceptions -shared -fPIC -pthread -pipe -fvisibility=hidden nsIPCModule.cpp
In file included from ../src/nsProcessInfo.h:39,
                 from nsIPCModule.cpp:37:
/usr/include/xulrunner-1.9.1.5/unstable/nsStringAPI.h:1054: error: size of array 'arg' is negative
/usr/include/xulrunner-1.9.1.5/unstable/nsStringAPI.h: In function 'const nsDependentSubstring_external Substring(const PRUnichar*, const PRUnichar*)':
/usr/include/xulrunner-1.9.1.5/unstable/nsStringAPI.h:1272: warning: conversion to 'PRUint32' from 'long int' may alter its value
/usr/include/xulrunner-1.9.1.5/unstable/nsStringAPI.h: In function 'const nsDependentCSubstring_external Substring(const char*, const char*)':
/usr/include/xulrunner-1.9.1.5/unstable/nsStringAPI.h:1310: warning: conversion to 'PRUint32' from 'long int' may alter its value

[1] https://launchpad.net/ubuntu/+source/firegpg
[2] http://launchpadlibrarian.net/36062363/buildlog_ubuntu-lucid-amd64.firegpg_0.7.10-1_FAILEDTOBUILD.txt.gz