rfivet/uemacs
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Use memmove instead of memcpy for overlapping memory area. (reproducible on OpenBSD).

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This commit is contained in:
Renaud 2022-08-26 11:16:45 +08:00
parent 737fee5323
commit 041210b228
6 changed files with 13 additions and 15 deletions
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6
README.md
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@ -1,7 +1,7 @@
# README # # README #
µEMACS (ue) on Cygwin/Linux/NetBSD, based on uEmacs/PK (em) from [kernel.org]( µEMACS (ue) on Cygwin/MSYS2/Linux/NetBSD/OpenBSD, based on uEmacs/PK (em)
https://git.kernel.org/pub/scm/editors/uemacs/uemacs.git/). from [kernel.org](https://git.kernel.org/pub/scm/editors/uemacs/uemacs.git/).
### Changes compare to uEmacs/PK ### ### Changes compare to uEmacs/PK ###
@ -26,6 +26,6 @@ https://git.kernel.org/pub/scm/editors/uemacs/uemacs.git/).
### How to build ### ### How to build ###
* dependencies: gcc, gmake, ncurses-devel. * dependencies: (gcc || clang) && gmake && ncurses-devel.
* make * make

2
defines.h
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@ -4,7 +4,7 @@
#if __unix__ || (defined(__APPLE__) && defined(__MACH__)) #if __unix__ || (defined(__APPLE__) && defined(__MACH__))
# define UNIX 1 # define UNIX 1
# if __NetBSD__ || (defined(__APPLE__) && defined(__MACH__)) # if __NetBSD__ || __OpenBSD__ || (defined(__APPLE__) && defined(__MACH__))
# define BSD 1 # define BSD 1
# define POSIX 1 # define POSIX 1
# elif __linux__ # elif __linux__

6
exec.c
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@ -557,9 +557,7 @@ static int dobuf( buffer_p bp) {
/* remove leading spaces */ /* remove leading spaces */
if( eline != lp->l_text) { if( eline != lp->l_text) {
int size = lp->l_used = eol - eline ; int size = lp->l_used = eol - eline ;
if( size) memmove( lp->l_text, eline, size) ;
memcpy( lp->l_text, eline, size) ;
eline = lp->l_text ; eline = lp->l_text ;
eol = &lp->l_text[ size] ; eol = &lp->l_text[ size] ;
} }
@ -595,7 +593,7 @@ static int dobuf( buffer_p bp) {
/* turn line into a string */ /* turn line into a string */
int size = lp->l_used - 6 ; int size = lp->l_used - 6 ;
if( size) if( size)
memcpy( lp->l_text, &eline[ 6], size) ; memmove( lp->l_text, &eline[ 6], size) ;
eline = lp->l_text ; eline = lp->l_text ;
eline[ size] = 0 ; eline[ size] = 0 ;

2
line.c
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@ -455,7 +455,7 @@ boolean lnewline( void) {
memcpy( lp2->l_text, lp1->l_text, doto) ; memcpy( lp2->l_text, lp1->l_text, doto) ;
lp1->l_used -= doto ; lp1->l_used -= doto ;
memcpy( lp1->l_text, &lp1->l_text[ doto], lp1->l_used) ; memmove( lp1->l_text, &lp1->l_text[ doto], lp1->l_used) ;
lp2->l_fp = lp1 ; lp2->l_fp = lp1 ;
lp2->l_bp = lp1->l_bp ; lp2->l_bp = lp1->l_bp ;
lp1->l_bp = lp2 ; lp1->l_bp = lp2 ;

4
pklock.c
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@ -12,11 +12,7 @@
#include <unistd.h> #include <unistd.h>
#include <stdio.h> #include <stdio.h>
#include <fcntl.h> #include <fcntl.h>
#ifdef SVR4
#include <string.h> #include <string.h>
#else
#include <strings.h>
#endif
#include <errno.h> #include <errno.h>
#include "util.h" #include "util.h"

8
posix.c
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@ -31,8 +31,12 @@ int ttcol = -1 ; /* Column location of HW cursor */
/* Define missing macroes for BSD and CYGWIN environment */ /* Define missing macroes for BSD and CYGWIN environment */
#if BSD #if BSD
#define OLCUC 0000002 # ifndef OLCUC
#define XCASE 0000004 # define OLCUC 0000002
# endif
# ifndef XCASE
# define XCASE 0000004
# endif
#endif #endif
#ifdef __CYGWIN__ /* gcc predefined (see cpp -dM) */ #ifdef __CYGWIN__ /* gcc predefined (see cpp -dM) */