shylie/llvm-project
1
0
Fork 0
Code Issues Pull Requests Actions 6 Packages Projects Releases Wiki Activity

[flang] Adding a new extension that was noticed to be intentionally in the code. (#182891)

Browse Source 
The flang compiler intentionally issues a warning on duplicate
prefix-specs for procedures. This is not consistent with the standard
which says "shall contain at most one of each". Other tested compilers
correctly issue an error.

It is safe to leave this as a warning. It can be turned into an error
condition by using the "-Werror" flag.

However, it should be noted in the Extensions document, similar to the
mention of the SAVE attribute.
This commit is contained in:
kwyatt-ext 2026-03-23 14:05:06 -05:00 committed by GitHub
parent b75222caf3
commit 0ae0ee0361
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
flang/docs/Extensions.md
View File

@ -483,6 +483,9 @@ end
are to the same value. Distinct initializations remain errors.
* A pointer component that has no default initialization or explicit value
in a structure constructor is defaulted to `NULL()`.
* Multiple specifications of a prefix-spec on the same procedure are allowed,
with a warning. C1552 (F2023) specifies that at most one of each shall be
present.
* An assumed-rank entity is an acceptable `NAMELIST` group item.
* A named constant (`PARAMETER`) may appear as a `namelist-group-object` in a
`NAMELIST` statement. The Fortran standard requires namelist group objects