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Bug 17600 – implicit float->int cast using += operator

Status: RESOLVED
Resolution: DUPLICATE
Severity: normal
Priority: P1
Component: dmd
Product: D
Version: D2
Platform: x86_64
OS: Linux
Creation time: 2017-07-05T12:54:00Z
Last change time: 2017-07-06T12:36:00Z
Assigned to: nobody
Creator: simon.buerger

Comments

Comment #0 by simon.buerger — 2017-07-05T12:54:36Z

The following code should not compile but it does, using an implicit cast that should not be allowed. void main() { int x; float y; x += y; // implicitly casts y to int ! }

Comment #1 by dlang-bugzilla — 2017-07-05T12:57:21Z

This is a warning since 2.068.0 (implemented in https://github.com/dlang/dmd/pull/4643). Please update your compiler or enable warnings with the -w switch. *** This issue has been marked as a duplicate of issue 3841 ***

Comment #2 by simon.buerger — 2017-07-06T12:36:00Z

I expected "x += y" to be equivalent to "x = x + y" (in which case an error is generated). Sorry I didn't check the spec, everything is actually correct. (but really surprising behavior IMHO). My bad.