Bug 20452 – std.conv: to and parse dont work correct with negative numbers

When the radix is not 10 the conversion from and to int does produce wrong results for negative numbers --- import std.stdio; import std.conv; void main() { foreach (i;2..17) writeln(to!string(-1, i)); } --- produces --- 11111111111111111111111111111111 102002022201221111210 3333333333333333 32244002423140 1550104015503 211301422353 37777777777 12068657453 -1 1904440553 9BA461593 535A79888 2CA5B7463 1A20DCD80 FFFFFFFF --- The same for the conversion from string to int: --- import std.stdio; import std.conv; void main() { writeln(to!int("-1", 10)); // works writeln(to!int("-1", 11)); // ConvException } ---

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