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fix possible rare crash when Xutf8TextPropertyToTextList fails
[st.git]
/
st.c
diff --git
a/st.c
b/st.c
index
ae7fa63
..
a9338e1
100644
(file)
--- a/
st.c
+++ b/
st.c
@@
-186,18
+186,18
@@
static void tputc(Rune);
static void treset(void);
static void tscrollup(int, int);
static void tscrolldown(int, int);
static void treset(void);
static void tscrollup(int, int);
static void tscrolldown(int, int);
-static void tsetattr(int *, int);
-static void tsetchar(Rune, Glyph *, int, int);
+static void tsetattr(
const
int *, int);
+static void tsetchar(Rune,
const
Glyph *, int, int);
static void tsetdirt(int, int);
static void tsetscroll(int, int);
static void tswapscreen(void);
static void tsetdirt(int, int);
static void tsetscroll(int, int);
static void tswapscreen(void);
-static void tsetmode(int, int, int *, int);
+static void tsetmode(int, int,
const
int *, int);
static int twrite(const char *, int, int);
static void tfulldirt(void);
static void tcontrolcode(uchar );
static void tdectest(char );
static void tdefutf8(char);
static int twrite(const char *, int, int);
static void tfulldirt(void);
static void tcontrolcode(uchar );
static void tdectest(char );
static void tdefutf8(char);
-static int32_t tdefcolor(int *, int *, int);
+static int32_t tdefcolor(
const
int *, int *, int);
static void tdeftran(char);
static void tstrsequence(uchar);
static void tdeftran(char);
static void tstrsequence(uchar);
@@
-226,10
+226,10
@@
static int iofd = 1;
static int cmdfd;
static pid_t pid;
static int cmdfd;
static pid_t pid;
-static uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
-static uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
-static Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
-static Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
+static
const
uchar utfbyte[UTF_SIZ + 1] = {0x80, 0, 0xC0, 0xE0, 0xF0};
+static
const
uchar utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
+static
const
Rune utfmin[UTF_SIZ + 1] = { 0, 0, 0x80, 0x800, 0x10000};
+static
const
Rune utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
ssize_t
xwrite(int fd, const char *s, size_t len)
ssize_t
xwrite(int fd, const char *s, size_t len)
@@
-269,12
+269,14
@@
xrealloc(void *p, size_t len)
}
char *
}
char *
-xstrdup(char *s)
+xstrdup(c
onst c
har *s)
{
{
- if ((s = strdup(s)) == NULL)
+ char *p;
+
+ if ((p = strdup(s)) == NULL)
die("strdup: %s\n", strerror(errno));
die("strdup: %s\n", strerror(errno));
- return
s
;
+ return
p
;
}
size_t
}
size_t
@@
-518,7
+520,7
@@
selsnap(int *x, int *y, int direction)
{
int newx, newy, xt, yt;
int delim, prevdelim;
{
int newx, newy, xt, yt;
int delim, prevdelim;
- Glyph *gp, *prevgp;
+
const
Glyph *gp, *prevgp;
switch (sel.snap) {
case SNAP_WORD:
switch (sel.snap) {
case SNAP_WORD:
@@
-591,7
+593,7
@@
getsel(void)
{
char *str, *ptr;
int y, bufsize, lastx, linelen;
{
char *str, *ptr;
int y, bufsize, lastx, linelen;
- Glyph *gp, *last;
+
const
Glyph *gp, *last;
if (sel.ob.x == -1)
return NULL;
if (sel.ob.x == -1)
return NULL;
@@
-758,7
+760,7
@@
stty(char **args)
}
int
}
int
-ttynew(c
har *line, char *cmd,
char *out, char **args)
+ttynew(c
onst char *line, char *cmd, const
char *out, char **args)
{
int m, s;
{
int m, s;
@@
-791,14
+793,15
@@
ttynew(char *line, char *cmd, char *out, char **args)
break;
case 0:
close(iofd);
break;
case 0:
close(iofd);
+ close(m);
setsid(); /* create a new process group */
dup2(s, 0);
dup2(s, 1);
dup2(s, 2);
if (ioctl(s, TIOCSCTTY, NULL) < 0)
die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
setsid(); /* create a new process group */
dup2(s, 0);
dup2(s, 1);
dup2(s, 2);
if (ioctl(s, TIOCSCTTY, NULL) < 0)
die("ioctl TIOCSCTTY failed: %s\n", strerror(errno));
- close(s);
-
close(m
);
+ if (s > 2)
+
close(s
);
#ifdef __OpenBSD__
if (pledge("stdio getpw proc exec", NULL) == -1)
die("pledge\n");
#ifdef __OpenBSD__
if (pledge("stdio getpw proc exec", NULL) == -1)
die("pledge\n");
@@
-1186,9
+1189,9
@@
tmoveto(int x, int y)
}
void
}
void
-tsetchar(Rune u, Glyph *attr, int x, int y)
+tsetchar(Rune u,
const
Glyph *attr, int x, int y)
{
{
- static char *vt100_0[62] = { /* 0x41 - 0x7e */
+ static c
onst c
har *vt100_0[62] = { /* 0x41 - 0x7e */
"↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
"↑", "↓", "→", "←", "█", "▚", "☃", /* A - G */
0, 0, 0, 0, 0, 0, 0, 0, /* H - O */
0, 0, 0, 0, 0, 0, 0, 0, /* P - W */
@@
-1300,7
+1303,7
@@
tdeleteline(int n)
}
int32_t
}
int32_t
-tdefcolor(int *attr, int *npar, int l)
+tdefcolor(
const
int *attr, int *npar, int l)
{
int32_t idx = -1;
uint r, g, b;
{
int32_t idx = -1;
uint r, g, b;
@@
-1350,7
+1353,7
@@
tdefcolor(int *attr, int *npar, int l)
}
void
}
void
-tsetattr(int *attr, int l)
+tsetattr(
const
int *attr, int l)
{
int i;
int32_t idx;
{
int i;
int32_t idx;
@@
-1468,9
+1471,9
@@
tsetscroll(int t, int b)
}
void
}
void
-tsetmode(int priv, int set, int *args, int narg)
+tsetmode(int priv, int set,
const
int *args, int narg)
{
{
- int alt
,
*lim;
+ int alt
; const int
*lim;
for (lim = args + narg; args < lim; ++args) {
if (priv) {
for (lim = args + narg; args < lim; ++args) {
if (priv) {
@@
-1844,7
+1847,6
@@
strhandle(void)
{
char *p = NULL, *dec;
int j, narg, par;
{
char *p = NULL, *dec;
int j, narg, par;
- static int winname = 0;
term.esc &= ~(ESC_STR_END|ESC_STR);
strparse();
term.esc &= ~(ESC_STR_END|ESC_STR);
strparse();
@@
-2021,7
+2023,7
@@
void
tdumpline(int n)
{
char buf[UTF_SIZ];
tdumpline(int n)
{
char buf[UTF_SIZ];
- Glyph *bp, *end;
+
const
Glyph *bp, *end;
bp = &term.line[n][0];
end = &bp[MIN(tlinelen(n), term.col) - 1];
bp = &term.line[n][0];
end = &bp[MIN(tlinelen(n), term.col) - 1];