https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83425
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
You can use -Wsign-conversion:
> g++-7 t.C -S -Wsign-conversion
t.C: In function ‘int main()’:
t.C:4:30: warning: conversion to ‘unsigned int’ from ‘int’ may change the sign
of the result [-Wsign-conversion]
unsigned foo = ret_int();
~~~~~~~^~
it was probably deemed too noisy to be enabled at any -W level.
