Commit 3dc36216f168f4e752b648b19d85eab32a037827 by Paul Eggert introduced a regression in the stack module.
If "stack.h" is included by client code that is supposed to be compiled with "-Wsign-compare", the compiler will complain about the comparison on line 121. There wasn't a problem before commit 3dc36216f168f4e752b648b19d85eab32a037827 because in the previous version both the "size" and the "allocated" field of a stack had the same (unsigned) type. As telling clients to compile their code without "-Wsign-compare" isn't an option, I would like to fix it. The simplest fix is to replace the comparison by: stack->size == (size_t) stack->allocated This shouldn't hide any overflows because stack->allocated is non-negative and holds a number of allocated items and the size_t type is by definition large enough to hold any number of allocated items. Marc
