Bug 12610 – std.algorithm.reduce (with seed) and array-wise operation produces incorrect result

The following program produces incorrect and random results like [373728176], [-2022052576], etc. (Build *without* -inline.) import std.stdio; import std.algorithm; void main() { int[] arr = [ 0 ]; int[1] seed; int[] result = reduce!((sum, _) => sum[])(seed, arr); writefln("%s", result); } Any of the following is sufficient to cover up the issue: * Building with -inline * Not slicing sum inside the lambda but returning it directly (i.e. => sum) * Inserting a writefln expression inside the lambda Ali

This turned out to be a user error after the following discussion: http://forum.dlang.org/thread/[email protected] (The user should not return a slice to the internal seed variable that reduce uses.) Ali