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|  Message 2060  |
|  James Digriz to All  |
|  GCC 8.3 compiler warnings on CentOS 8  |
|  02 Sep 20 17:59:46  |
 
CHRS: UTF-8 4
MSGID: 1:123/755@fidonet 5a62c441
PID: MBSE-BBS 1.0.7.18 (GNU/Linux-x86_64)
TZUTC: -0400
TID: MBSE-FIDO 1.0.7.18 (GNU/Linux-x86_64)
Anyone else tried compiling on 8? Goes to completion but I'm getting piles of
warnings about string truncation and such. Eg:
.
.
.
log.c: In function ‘dolastlog’:
log.c:89:2: warning: ‘strncpy’ specified bound 32 equals destination size
[-Wstringop-truncation]
strncpy(newlog.ll_line, line, sizeof newlog.ll_line);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcc -O2 -fno-strict-aliasing -Wall -Wshadow -Wwrite-strings
-Wstrict-prototypes
-D_REENTRANT -I/usr/local/include -c setugid.c
gcc -O2 -fno-strict-aliasing -Wall -Wshadow -Wwrite-strings
-Wstrict-prototypes
-D_REENTRANT -I/usr/local/include -c mblogin.c
In file included from mblogin.c:32:
mblogin.c: In function ‘main’:
mblogin.c:541:44: warning: ‘%s’ directive output may be truncated writing
up to 8191 bytes into a region of size 507 [-Wformat-truncation=]
snprintf(fromhost, sizeof fromhost, _(" on `%s' from `%s'"), tty, cp);
^~~~~~~~~~~~~~~~~~~~
.
.
.
Presumably this might be something to be concerned about, but I haven't tried
running the resulting code yet, and won't run it as a production system until
somebody with more current gcc knowledge than mine weighs in.
Appreciate any input,
jbdigriz
Greetings, James Digriz
email: jbdigriz@bbs.dragonsweb.org
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