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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/107351] Bootstrap fails when gcc is built with
 gcc-13-master: error: conversion from 'long unsigned int' to 'unsigned int'
 changes value from '7001010000' to '2706042704'
Date: Fri, 21 Oct 2022 18:38:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107351

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2022-10-21
             Status|UNCONFIRMED                 |WAITING
     Ever confirmed|0                           |1

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
# In non-release builds, use a date-related module version.
ifneq ($(DEVPHASE_c),)
# Some date's don't grok 'r', if so, simply use today's
# date (don't bootstrap at midnight).
MODULE_VERSION :=3D $(shell date -r $(srcdir)/cp/module.cc '+%y%m%d-%H%M' \
  2>/dev/null || date '+%y%m%d-0000' 2>/dev/null || echo 0)

CFLAGS-cp/module.o +=3D -DMODULE_VERSION=3D'($(subst -,,$(MODULE_VERSION))U=
)'
endif


I am trying to figure out how you would get 7001010000 if the above was bei=
ng
used.
Can you attach the full build log around the building of module.cc ?

it should have been -DMODULE_VERSION=3D2210211757U or something similar.

Even in the source we have:
#define IS_EXPERIMENTAL(V) ((V) >=3D (1U << 20))
#define MODULE_MAJOR(V) ((V) / 10000)
#define MODULE_MINOR(V) ((V) % 10000)
#define EXPERIMENT(A,B) (IS_EXPERIMENTAL (MODULE_VERSION) ? (A) : (B))
#ifndef MODULE_VERSION
#include "bversion.h"
#define MODULE_VERSION (BUILDING_GCC_MAJOR * 10000U + BUILDING_GCC_MINOR)
#elif !IS_EXPERIMENTAL (MODULE_VERSION)
#error "This is not the version I was looking for."
#endif=