Sorted:

problem about divide-by-zero-Collection of common programming errors

This app won't run unless you update Google Play Services. (via Bazaar)-Collection of common programming errors

union for uint32_t and uint8_t[4] undefined behavior?-Collection of common programming errors

linking with warning and then undefined reference-Collection of common programming errors

Undefined references when linking assembly and C++ using g++-Collection of common programming errors

How did the class method call on ActiveRecord::Relation takes a context?-Collection of common programming errors

printf using stack? [duplicate]-Collection of common programming errors

Common Lisp scoping (dynamic vs lexical)-Collection of common programming errors

getting users geolocation via html5 and javascript-Collection of common programming errors

Inserting multiple entries into table from the same form-Collection of common programming errors