Bug #889511: gcc-10: lua-5.3 luaS_newlstr() compile error - Freeciv - HostedRedmine by Planio

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Bug #889511

closed

gcc-10: lua-5.3 luaS_newlstr() compile error

Added by Marko Lindqvist over 2 years ago. Updated over 2 years ago.

Status:

Closed

Priority:

Normal

Assignee:

Marko Lindqvist

Category:

General

Sprint/Milestone:

2.6.2.1

Start date:

Due date:

% Done:

Estimated time:

Description

Noticed when working on Feature #889425, but also reproduced with lua-5.3.5 currently in S2_6 and S3_0 heads. When building with included lua (--disable-sys-lua, or lua lacking from system), gcc10 gives:

In function ‘createstrobj’,
inlined from ‘luaS_createlngstrobj’ at ../../../../../src/dependencies/lua-5.3/src/lstring.c:148:17,
inlined from ‘luaS_newlstr’ at ../../../../../src/dependencies/lua-5.3/src/lstring.c:206:10:
../../../../../src/dependencies/lua-5.3/src/lstring.c:142:17: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=]
142 | getstr(ts)[l] = '\0'; /* ending 0 */
In file included from ../../../../../src/dependencies/lua-5.3/src/ldebug.h:11,
from ../../../../../src/dependencies/lua-5.3/src/lstring.c:17:
../../../../../src/dependencies/lua-5.3/src/lstring.c: In function ‘luaS_newlstr’:
../../../../../src/dependencies/lua-5.3/src/lstate.h:213:18: note: at offset 0 to object ‘ts’ with size 24 declared here
213 | struct TString ts; | ^~

Files

0006-Fix-lua-5.3-compile-with-gcc-10.patch (3.94 KB) 0006-Fix-lua-5.3-compile-with-gcc-10.patch

Marko Lindqvist, 2020-09-30 05:46 AM

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