https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
--- Comment #14 from Jason Merrill ---
(In reply to Martin Sebor from comment #13)
> static inline void copy (const char *p)
> {
> int N = null_safe_strlen (p);
> if (N) /* disabling this branch prevents the warning */
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
--- Comment #13 from Martin Sebor ---
The warning for the test case in comment #12 isn't directly related to ranges:
it's issued simply because the invalid statement is in the IL and not
eliminated by DCE (the secret functions don't let it).
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
Jason Merrill changed:
What|Removed |Added
CC||jason at gcc dot gnu.org
See
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
--- Comment #11 from CVS Commits ---
The master branch has been updated by Jonathan Wakely :
https://gcc.gnu.org/g:f8463b0e3ec2438b4cfb8c9a468d59761db2c8a0
commit r12-5874-gf8463b0e3ec2438b4cfb8c9a468d59761db2c8a0
Author: Jonathan Wakely
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
Martin Sebor changed:
What|Removed |Added
Keywords|missed-optimization |
--- Comment #10 from Martin Sebor ---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
--- Comment #9 from Andrew Pinski ---
(In reply to Andrew Pinski from comment #8)
> I think we should come up with a better plan in general for "flow sensative"
> warnings really. Maybe only enable them with -O2 and above. But we keep on
>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
Andrew Pinski changed:
What|Removed |Added
Resolution|WONTFIX |---
Status|RESOLVED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
--- Comment #7 from Jonathan Wakely ---
I have a patch:
--- a/libstdc++-v3/include/bits/char_traits.h
+++ b/libstdc++-v3/include/bits/char_traits.h
@@ -54,6 +54,11 @@ namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
{
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
Aldy Hernandez changed:
What|Removed |Added
CC||aldyh at gcc dot gnu.org,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
--- Comment #5 from John McFarlane ---
Here is an example of the real-world code causing this warning:
https://github.com/johnmcfarlane/cnl/blob/6d46b6cf10a998e3bdcc32557f202c8579b5717c/test/unit/scaled_int/to_chars.h#L60
It is converting a
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
Martin Sebor changed:
What|Removed |Added
Resolution|--- |WONTFIX
Status|NEW
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103483
Martin Sebor changed:
What|Removed |Added
Component|c++ |middle-end
Keywords|
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