[New-bugs-announce] [issue40455] GCC 10 compiler warnings

[STINNER Victor]

New submission from STINNER Victor <vstinner at python.org>:

GCC 10.0.1 on PPC64LE Fedora Rawhide LTO 3.x buildbot:
https://buildbot.python.org/all/#/builders/351/builds/406

Objects/longobject.c: In function ‘_PyLong_Frexp’:
Objects/longobject.c:2928:33: warning: ‘x_digits[0]’ may be used uninitialized in this function [-Wmaybe-uninitialized]
 2928 |                     x_digits[0] |= 1;
      |                                 ^~

In function ‘assemble_lnotab’,
    inlined from ‘assemble_emit’ at Python/compile.c:5709:25,
    inlined from ‘assemble’ at Python/compile.c:6048:18:
Python/compile.c:5663:19: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 5663 |         *lnotab++ = k;
      |         ~~~~~~~~~~^~~

----------
components: Build
messages: 367785
nosy: vstinner
priority: normal
severity: normal
status: open
title: GCC 10 compiler warnings
versions: Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40455>
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