https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122677
Bug ID: 122677
Summary: [modules] g++ cannot write CMI if a repository path is
absolute.
Product: gcc
Version: 15.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mtxn at duck dot com
Target Milestone: ---
Created attachment 62789
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=62789&action=edit
bugfix
location:
gcc/cp/module.cc -> void create_dirs(char* path):
context:
int mkdir(const char *pathname, mode_t mode):
returns -1 at error.
bug:
(int)failed && (bool)(errno != EEXIST)
description:
-1 is considered "true".
As the result of this bug cc1plus is unable to create module repository if
the provided repository path is absolute.
studied example:
g++ -fmodules -xc++-system-header ext/stdio_filebuf.h
-fmodule-mapper="|@g++-mapper-server -r /tmp/test.gcm"
result:
g++ fails to create "/tmp/test.gcm" directory.
I included simplest valid bug fix i found as an attachment.
