https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109681
Bug ID: 109681
Summary: suggested preview switches use DMD
Product: gcc
Version: 13.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: d
Assignee: ibuclaw at gdcproject dot org
Reporter: schveiguy at gmail dot com
Target Milestone: ---
When you use features that require preview switches, the messages that inform
you of the need to use the switch are worded using DMD frontend style switches.
For example:
```d
struct S {
int x : 5;
}
```
Result:
```
<source>:3:14: error: use -preview=bitfields for bitfield support
3 | int x : 5;
| ^
```
What it should say is:
```
<source>:3:14: error: use -fpreview=bitfields for bitfield support
3 | int x : 5;
| ^
```
I searched for `-preview=` in the source, and found these instances:
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/d/dmd/parse.d;h=36a76f50da20590abc9560533b1901b1258ad00b;hb=HEAD#l1236
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/d/dmd/parse.d;h=36a76f50da20590abc9560533b1901b1258ad00b;hb=HEAD#l1252
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/d/dmd/parse.d;h=36a76f50da20590abc9560533b1901b1258ad00b;hb=HEAD#l4614
https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/d/dmd/parse.d;h=36a76f50da20590abc9560533b1901b1258ad00b;hb=HEAD#l5148
There may be more.
