Случайно нашел примеры как загнать линкер в ступор ftp://netuse.sytes.net/files/embedded/iar/cd-ewarm-6402-3992/doc/ew/doc/infocenter/ilinkarm.ENU.html
Unclosed quoted strings in the linker configuration file caused the linker to freeze.
The linker could crash during stack usage analysis if the program contained a function call with a constant function pointer argument for a function that could call the calling function.