[Bug middle-end/82601] missing uninitialized warning for INTENT(OUT) argument with -O0 / -Og
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82601 Richard Biener changed: What|Removed |Added Target Milestone|12.4|12.5 --- Comment #10 from Richard Biener --- GCC 12.4 is being released, retargeting bugs to GCC 12.5.
[Bug middle-end/82601] missing uninitialized warning for INTENT(OUT) argument with -O0 / -Og
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82601 Richard Biener changed: What|Removed |Added Target Milestone|12.3|12.4 --- Comment #9 from Richard Biener --- GCC 12.3 is being released, retargeting bugs to GCC 12.4.
[Bug middle-end/82601] missing uninitialized warning for INTENT(OUT) argument with -O0 / -Og
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82601 Richard Biener changed: What|Removed |Added Target Milestone|12.2|12.3 --- Comment #8 from Richard Biener --- GCC 12.2 is being released, retargeting bugs to GCC 12.3.
[Bug middle-end/82601] missing uninitialized warning for INTENT(OUT) argument with -O0 / -Og
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82601 Jakub Jelinek changed: What|Removed |Added Target Milestone|12.0|12.2 --- Comment #7 from Jakub Jelinek --- GCC 12.1 is being released, retargeting bugs to GCC 12.2.
[Bug middle-end/82601] missing uninitialized warning for INTENT(OUT) argument with -O0 / -Og
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82601 Martin Sebor changed: What|Removed |Added Status|ASSIGNED|NEW CC|msebor at gcc dot gnu.org | --- Comment #6 from Martin Sebor --- I'm no longer working on this.
[Bug middle-end/82601] missing uninitialized warning for INTENT(OUT) argument with -O0 / -Og
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82601
Martin Sebor changed:
What|Removed |Added
CC||msebor at gcc dot gnu.org
Assignee|unassigned at gcc dot gnu.org |msebor at gcc dot
gnu.org
Last reconfirmed|2017-12-30 00:00:00 |2021-4-2
See Also||https://gcc.gnu.org/bugzill
||a/show_bug.cgi?id=31279
Known to fail||10.2.0, 11.0, 8.3.0, 9.3.0
Target Milestone|--- |12.0
Status|NEW |ASSIGNED
--- Comment #5 from Martin Sebor ---
Pr31279 asks for a warning for a warning for call-by-reference arguments with
known intent(in). This is the converse, but as I mentioned in pr31279 comment
#7 the middle end infrastructure to issue these warnings is in place. The
Fortran front end needs to make use of it.
That being said, detecting read accesses to write-only arguments within the
annotated function itself isn't implemented yet (only passing uninitialized
arguments to read-only arguments is). So I suggest tracking the Fortran
changes in pr31279 and the missing middle-end support here.
$ cat z.c && gcc -S -Wall z.c
__attribute__ ((access (read_only, 1)))
void f1 (int *);
void f2 (void)
{
int i;
f1 (); // -Wuninitialized (good)
}
__attribute__ ((access (write_only, 1)))
int g1 (int *p)
{
return *p; // missing warning
}
z.c: In function ‘f2’:
z.c:7:3: warning: ‘i’ is used uninitialized [-Wuninitialized]
7 | f1 (); // -Wuninitialized (good)
| ^~~
z.c:2:6: note: in a call to ‘f1’ declared with attribute ‘access (read_only,
1)’ here
2 | void f1 (int *);
| ^~
z.c:6:7: note: ‘i’ declared here
6 | int i;
| ^
[Bug middle-end/82601] missing uninitialized warning for INTENT(OUT) argument with -O0 / -Og
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82601 Dominique d'Humieres changed: What|Removed |Added Status|UNCONFIRMED |NEW Last reconfirmed||2017-12-30 Ever confirmed|0 |1 --- Comment #4 from Dominique d'Humieres --- Confirmed from 4.8 up to trunk (8.0).
[Bug middle-end/82601] missing uninitialized warning for INTENT(OUT) argument with -O0 / -Og
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82601 --- Comment #3 from janus at gcc dot gnu.org --- Here is a variant of the example in comment 0, where the subroutine has been substituted by a function: program uninit integer :: p,q p = -1 q = f(p) if (p
