https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118733
Bug ID: 118733
Summary: std::filesystem::weakly_canonical throws if the file
disappears during its execution
Product: gcc
Version: 14.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: doko at gcc dot gnu.org
Target Milestone: ---
Created attachment 60365
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=60365&action=edit
test case
[forwarded from https://bugs.debian.org/1094270]
The function std::filesystem::weakly_canonical is defined as working
even if the path points to a file that does not exist.
If however the path disappears while weakly_canonical does its thing, we
surprisingly get an exception.
Reproducer:
$ g++ weakly_canonical.cc -o weakly_canonical
$ ./weakly_canonical
Canonicalized path for missing file: "…/tmp/does-not-exist"
weakly_canonical failed at iteration 36: filesystem error: cannot make
canonical path: No such file or directory [tmp/test]
