sync updated drw code from dmenu

important:
- drw_rect: didn't use w and h, change the dwm code accordingly.
- drw_text: text is NULL is not allowed, use drw_rect().

diff --git a/drw.c b/drw.c
index eb3b3c3a23097e80b9f02729ea9de959cd6cfc42..f49200b2278c95363c5ee54f21912f08d60903d8 100644 (file)
--- a/drw.c
+++ b/drw.c
@@ -9,7 +9,7 @@
 #include "util.h"
 
 #define UTF_INVALID 0xFFFD
-#define UTF_SIZ 4
+#define UTF_SIZ     4
 
 static const unsigned char utfbyte[UTF_SIZ + 1] = {0x80,    0, 0xC0, 0xE0, 0xF0};
 static const unsigned char utfmask[UTF_SIZ + 1] = {0xC0, 0x80, 0xE0, 0xF0, 0xF8};
@@ -17,50 +17,55 @@ static const long utfmin[UTF_SIZ + 1] = {       0,    0,  0x80,  0x800,  0x10000
 static const long utfmax[UTF_SIZ + 1] = {0x10FFFF, 0x7F, 0x7FF, 0xFFFF, 0x10FFFF};
 
 static long
-utf8decodebyte(const char c, size_t *i) {
-       for(*i = 0; *i < (UTF_SIZ + 1); ++(*i))
-               if(((unsigned char)c & utfmask[*i]) == utfbyte[*i])
+utf8decodebyte(const char c, size_t *i)
+{
+       for (*i = 0; *i < (UTF_SIZ + 1); ++(*i))
+               if (((unsigned char)c & utfmask[*i]) == utfbyte[*i])
                        return (unsigned char)c & ~utfmask[*i];
        return 0;
 }
 
 static size_t
-utf8validate(long *u, size_t i) {
-       if(!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
+utf8validate(long *u, size_t i)
+{
+       if (!BETWEEN(*u, utfmin[i], utfmax[i]) || BETWEEN(*u, 0xD800, 0xDFFF))
                *u = UTF_INVALID;
-       for(i = 1; *u > utfmax[i]; ++i)
+       for (i = 1; *u > utfmax[i]; ++i)
                ;
        return i;
 }
 
 static size_t
-utf8decode(const char *c, long *u, size_t clen) {
+utf8decode(const char *c, long *u, size_t clen)
+{
        size_t i, j, len, type;
        long udecoded;
 
        *u = UTF_INVALID;
-       if(!clen)
+       if (!clen)
                return 0;
        udecoded = utf8decodebyte(c[0], &len);
-       if(!BETWEEN(len, 1, UTF_SIZ))
+       if (!BETWEEN(len, 1, UTF_SIZ))
                return 1;
-       for(i = 1, j = 1; i < clen && j < len; ++i, ++j) {
+       for (i = 1, j = 1; i < clen && j < len; ++i, ++j) {
                udecoded = (udecoded << 6) | utf8decodebyte(c[i], &type);
-               if(type != 0)
+               if (type)
                        return j;
        }
-       if(j < len)
+       if (j < len)
                return 0;
        *u = udecoded;
        utf8validate(u, len);
+
        return len;
 }
 
 Drw *
-drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h) {
-       Drw *drw = (Drw *)calloc(1, sizeof(Drw));
-       if(!drw)
-               return NULL;
+drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h)
+{
+       Drw *drw;
+
+       drw = ecalloc(1, sizeof(Drw));
        drw->dpy = dpy;
        drw->screen = screen;
        drw->root = root;
@@ -70,26 +75,27 @@ drw_create(Display *dpy, int screen, Window root, unsigned int w, unsigned int h
        drw->gc = XCreateGC(dpy, root, 0, NULL);
        drw->fontcount = 0;
        XSetLineAttributes(dpy, drw->gc, 1, LineSolid, CapButt, JoinMiter);
+
        return drw;
 }
 
 void
-drw_resize(Drw *drw, unsigned int w, unsigned int h) {
-       if(!drw)
-               return;
+drw_resize(Drw *drw, unsigned int w, unsigned int h)
+{
        drw->w = w;
        drw->h = h;
-       if(drw->drawable != 0)
+       if (drw->drawable)
                XFreePixmap(drw->dpy, drw->drawable);
        drw->drawable = XCreatePixmap(drw->dpy, drw->root, w, h, DefaultDepth(drw->dpy, drw->screen));
 }
 
 void
-drw_free(Drw *drw) {
+drw_free(Drw *drw)
+{
        size_t i;
-       for (i = 0; i < drw->fontcount; i++) {
+
+       for (i = 0; i < drw->fontcount; i++)
                drw_font_free(drw->fonts[i]);
-       }
        XFreePixmap(drw->dpy, drw->drawable);
        XFreeGC(drw->dpy, drw->gc);
        free(drw);
@@ -99,14 +105,11 @@ drw_free(Drw *drw) {
  * drw_font_create instead.
  */
 static Fnt *
-drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
+drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern)
+{
        Fnt *font;
-
-       if (!(fontname || fontpattern))
-               die("No font specified.\n");
-
-       if (!(font = (Fnt *)calloc(1, sizeof(Fnt))))
-               return NULL;
+       XftFont *xfont = NULL;
+       FcPattern *pattern = NULL;
 
        if (fontname) {
                /* Using the pattern found at font->xfont->pattern does not yield same
@@ -115,46 +118,50 @@ drw_font_xcreate(Drw *drw, const char *fontname, FcPattern *fontpattern) {
                 * behaviour whereas the former just results in
                 * missing-character-rectangles being drawn, at least with some fonts.
                 */
-               if (!(font->xfont = XftFontOpenName(drw->dpy, drw->screen, fontname)) ||
-                   !(font->pattern = FcNameParse((FcChar8 *) fontname))) {
-                       if (font->xfont) {
-                               XftFontClose(drw->dpy, font->xfont);
-                               font->xfont = NULL;
-                       }
+               if (!(xfont = XftFontOpenName(drw->dpy, drw->screen, fontname))) {
                        fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
+                       return NULL;
+               }
+               if (!(pattern = FcNameParse((FcChar8 *) fontname))) {
+                       fprintf(stderr, "error, cannot load font: '%s'\n", fontname);
+                       XftFontClose(drw->dpy, xfont);
+                       return NULL;
                }
        } else if (fontpattern) {
-               if (!(font->xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
+               if (!(xfont = XftFontOpenPattern(drw->dpy, fontpattern))) {
                        fprintf(stderr, "error, cannot load font pattern.\n");
-               } else {
-                       font->pattern = NULL;
+                       return NULL;
                }
+       } else {
+               die("no font specified.\n");
        }
 
-       if (!font->xfont) {
-               free(font);
-               return NULL;
-       }
-
-       font->ascent = font->xfont->ascent;
-       font->descent = font->xfont->descent;
+       font = ecalloc(1, sizeof(Fnt));
+       font->xfont = xfont;
+       font->pattern = pattern;
+       font->ascent = xfont->ascent;
+       font->descent = xfont->descent;
        font->h = font->ascent + font->descent;
        font->dpy = drw->dpy;
+
        return font;
 }
 
 Fnt*
-drw_font_create(Drw *drw, const char *fontname) {
+drw_font_create(Drw *drw, const char *fontname)
+{
        return drw_font_xcreate(drw, fontname, NULL);
 }
 
 void
-drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) {
+drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount)
+{
        size_t i;
        Fnt *font;
+
        for (i = 0; i < fontcount; i++) {
                if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
-                       die("Font cache exhausted.\n");
+                       die("font cache exhausted.\n");
                } else if ((font = drw_font_xcreate(drw, fonts[i], NULL))) {
                        drw->fonts[drw->fontcount++] = font;
                }
@@ -162,68 +169,62 @@ drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount) {
 }
 
 void
-drw_font_free(Fnt *font) {
-       if(!font)
+drw_font_free(Fnt *font)
+{
+       if (!font)
                return;
-       if(font->pattern)
+       if (font->pattern)
                FcPatternDestroy(font->pattern);
        XftFontClose(font->dpy, font->xfont);
        free(font);
 }
 
 Clr *
-drw_clr_create(Drw *drw, const char *clrname) {
+drw_clr_create(Drw *drw, const char *clrname)
+{
        Clr *clr;
-       Colormap cmap;
-       Visual *vis;
-
-       if(!drw)
-               return NULL;
-       clr = (Clr *)calloc(1, sizeof(Clr));
-       if(!clr)
-               return NULL;
-       cmap = DefaultColormap(drw->dpy, drw->screen);
-       vis = DefaultVisual(drw->dpy, drw->screen);
-       if(!XftColorAllocName(drw->dpy, vis, cmap, clrname, &clr->rgb))
+
+       clr = ecalloc(1, sizeof(Clr));
+       if (!XftColorAllocName(drw->dpy, DefaultVisual(drw->dpy, drw->screen),
+                              DefaultColormap(drw->dpy, drw->screen),
+                              clrname, &clr->rgb))
                die("error, cannot allocate color '%s'\n", clrname);
        clr->pix = clr->rgb.pixel;
+
        return clr;
 }
 
 void
-drw_clr_free(Clr *clr) {
-       if(clr)
-               free(clr);
+drw_clr_free(Clr *clr)
+{
+       free(clr);
 }
 
 void
-drw_setscheme(Drw *drw, ClrScheme *scheme) {
-       if(drw && scheme)
-               drw->scheme = scheme;
+drw_setscheme(Drw *drw, ClrScheme *scheme)
+{
+       drw->scheme = scheme;
 }
 
 void
-drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert) {
-       int dx;
-
-       if(!drw || !drw->fontcount || !drw->scheme)
+drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert)
+{
+       if (!drw->scheme)
                return;
        XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->bg->pix : drw->scheme->fg->pix);
-       dx = (drw->fonts[0]->ascent + drw->fonts[0]->descent + 2) / 4;
-       if(filled)
-               XFillRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx+1, dx+1);
-       else if(empty)
-               XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x+1, y+1, dx, dx);
+       if (filled)
+               XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w + 1, h + 1);
+       else if (empty)
+               XDrawRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
 }
 
 int
-drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert) {
+drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert)
+{
        char buf[1024];
        int tx, ty, th;
        Extnts tex;
-       Colormap cmap;
-       Visual *vis;
-       XftDraw *d;
+       XftDraw *d = NULL;
        Fnt *curfont, *nextfont;
        size_t i, len;
        int utf8strlen, utf8charlen, render;
@@ -235,23 +236,18 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
        XftResult result;
        int charexists = 0;
 
+       if (!drw->scheme || !drw->fontcount)
+               return 0;
+
        if (!(render = x || y || w || h)) {
                w = ~w;
-       }
-
-       if (!drw || !drw->scheme) {
-               return 0;
-       } else if (render) {
-               XSetForeground(drw->dpy, drw->gc, invert ? drw->scheme->fg->pix : drw->scheme->bg->pix);
+       } else {
+               XSetForeground(drw->dpy, drw->gc, invert ?
+                              drw->scheme->fg->pix : drw->scheme->bg->pix);
                XFillRectangle(drw->dpy, drw->drawable, drw->gc, x, y, w, h);
-       }
-
-       if (!text || !drw->fontcount) {
-               return 0;
-       } else if (render) {
-               cmap = DefaultColormap(drw->dpy, drw->screen);
-               vis = DefaultVisual(drw->dpy, drw->screen);
-               d = XftDrawCreate(drw->dpy, drw->drawable, vis, cmap);
+               d = XftDrawCreate(drw->dpy, drw->drawable,
+                                 DefaultVisual(drw->dpy, drw->screen),
+                                 DefaultColormap(drw->dpy, drw->screen));
        }
 
        curfont = drw->fonts[0];
@@ -274,24 +270,23 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
                                }
                        }
 
-                       if (!charexists || (nextfont && nextfont != curfont)) {
+                       if (!charexists || (nextfont && nextfont != curfont))
                                break;
-                       } else {
+                       else
                                charexists = 0;
-                       }
                }
 
                if (utf8strlen) {
                        drw_font_getexts(curfont, utf8str, utf8strlen, &tex);
                        /* shorten text if necessary */
-                       for(len = MIN(utf8strlen, (sizeof buf) - 1); len && (tex.w > w - drw->fonts[0]->h || w < drw->fonts[0]->h); len--)
+                       for (len = MIN(utf8strlen, (sizeof buf) - 1); len && (tex.w > w - drw->fonts[0]->h || w < drw->fonts[0]->h); len--)
                                drw_font_getexts(curfont, utf8str, len, &tex);
 
                        if (len) {
                                memcpy(buf, utf8str, len);
                                buf[len] = '\0';
-                               if(len < utf8strlen)
-                                       for(i = len; i && i > len - 3; buf[--i] = '.');
+                               if (len < utf8strlen)
+                                       for (i = len; i && i > len - 3; buf[--i] = '.');
 
                                if (render) {
                                        th = curfont->ascent + curfont->descent;
@@ -299,7 +294,6 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
                                        tx = x + (h / 2);
                                        XftDrawStringUtf8(d, invert ? &drw->scheme->bg->rgb : &drw->scheme->fg->rgb, curfont->xfont, tx, ty, (XftChar8 *)buf, len);
                                }
-
                                x += tex.w;
                                w -= tex.w;
                        }
@@ -316,18 +310,16 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
                         */
                        charexists = 1;
 
-                       if (drw->fontcount >= DRW_FONT_CACHE_SIZE) {
+                       if (drw->fontcount >= DRW_FONT_CACHE_SIZE)
                                continue;
-                       }
 
                        fccharset = FcCharSetCreate();
                        FcCharSetAddChar(fccharset, utf8codepoint);
 
                        if (!drw->fonts[0]->pattern) {
                                /* Refer to the comment in drw_font_xcreate for more
-                                * information.
-                                */
-                               die("The first font in the cache must be loaded from a font string.\n");
+                                * information. */
+                               die("the first font in the cache must be loaded from a font string.\n");
                        }
 
                        fcpattern = FcPatternDuplicate(drw->fonts[0]->pattern);
@@ -346,65 +338,60 @@ drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *tex
                                if (curfont && XftCharExists(drw->dpy, curfont->xfont, utf8codepoint)) {
                                        drw->fonts[drw->fontcount++] = curfont;
                                } else {
-                                       if (curfont) {
-                                               drw_font_free(curfont);
-                                       }
+                                       drw_font_free(curfont);
                                        curfont = drw->fonts[0];
                                }
                        }
                }
        }
-
-       if (render) {
+       if (d)
                XftDrawDestroy(d);
-       }
 
        return x;
 }
 
 void
-drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h) {
-       if(!drw)
-               return;
+drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h)
+{
        XCopyArea(drw->dpy, drw->drawable, win, drw->gc, x, y, w, h, x, y);
        XSync(drw->dpy, False);
 }
 
-
 void
-drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex) {
+drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *tex)
+{
        XGlyphInfo ext;
 
-       if(!font || !text)
-               return;
        XftTextExtentsUtf8(font->dpy, font->xfont, (XftChar8 *)text, len, &ext);
        tex->h = font->h;
        tex->w = ext.xOff;
 }
 
 unsigned int
-drw_font_getexts_width(Fnt *font, const char *text, unsigned int len) {
+drw_font_getexts_width(Fnt *font, const char *text, unsigned int len)
+{
        Extnts tex;
 
-       if(!font)
-               return -1;
        drw_font_getexts(font, text, len, &tex);
+
        return tex.w;
 }
 
 Cur *
-drw_cur_create(Drw *drw, int shape) {
-       Cur *cur = (Cur *)calloc(1, sizeof(Cur));
+drw_cur_create(Drw *drw, int shape)
+{
+       Cur *cur;
 
-       if(!drw || !cur)
-               return NULL;
+       cur = ecalloc(1, sizeof(Cur));
        cur->cursor = XCreateFontCursor(drw->dpy, shape);
+
        return cur;
 }
 
 void
-drw_cur_free(Drw *drw, Cur *cursor) {
-       if(!drw || !cursor)
+drw_cur_free(Drw *drw, Cur *cursor)
+{
+       if (!cursor)
                return;
        XFreeCursor(drw->dpy, cursor->cursor);
        free(cursor);

diff --git a/drw.h b/drw.h
index 536171b958b939b06c9bbf9008806ffb2a8d205a..e3b8515235f682ccd9b3894a58b524f43c4f0319 100644 (file)
--- a/drw.h
+++ b/drw.h
@@ -43,32 +43,32 @@ typedef struct {
 } Extnts;
 
 /* Drawable abstraction */
-Drw *drw_create(Display *dpy, int screen, Window win, unsigned int w, unsigned int h);
-void drw_resize(Drw *drw, unsigned int w, unsigned int h);
-void drw_free(Drw *drw);
+Drw *drw_create(Display *, int, Window, unsigned int, unsigned int);
+void drw_resize(Drw *, unsigned int, unsigned int);
+void drw_free(Drw *);
 
 /* Fnt abstraction */
-Fnt *drw_font_create(Drw *drw, const char *fontname);
-void drw_load_fonts(Drw* drw, const char *fonts[], size_t fontcount);
-void drw_font_free(Fnt *font);
-void drw_font_getexts(Fnt *font, const char *text, unsigned int len, Extnts *extnts);
-unsigned int drw_font_getexts_width(Fnt *font, const char *text, unsigned int len);
+Fnt *drw_font_create(Drw *, const char *);
+void drw_load_fonts(Drw *, const char *[], size_t);
+void drw_font_free(Fnt *);
+void drw_font_getexts(Fnt *, const char *, unsigned int, Extnts *);
+unsigned int drw_font_getexts_width(Fnt *, const char *, unsigned int);
 
 /* Colour abstraction */
-Clr *drw_clr_create(Drw *drw, const char *clrname);
-void drw_clr_free(Clr *clr);
+Clr *drw_clr_create(Drw *, const char *);
+void drw_clr_free(Clr *);
 
 /* Cursor abstraction */
-Cur *drw_cur_create(Drw *drw, int shape);
-void drw_cur_free(Drw *drw, Cur *cursor);
+Cur *drw_cur_create(Drw *, int);
+void drw_cur_free(Drw *, Cur *);
 
 /* Drawing context manipulation */
-void drw_setfont(Drw *drw, Fnt *font);
-void drw_setscheme(Drw *drw, ClrScheme *scheme);
+void drw_setfont(Drw *, Fnt *);
+void drw_setscheme(Drw *, ClrScheme *);
 
 /* Drawing functions */
-void drw_rect(Drw *drw, int x, int y, unsigned int w, unsigned int h, int filled, int empty, int invert);
-int drw_text(Drw *drw, int x, int y, unsigned int w, unsigned int h, const char *text, int invert);
+void drw_rect(Drw *, int, int, unsigned int, unsigned int, int, int, int);
+int drw_text(Drw *, int, int, unsigned int, unsigned int, const char *, int);
 
 /* Map functions */
-void drw_map(Drw *drw, Window win, int x, int y, unsigned int w, unsigned int h);
+void drw_map(Drw *, Window, int, int, unsigned int, unsigned int);

diff --git a/dwm.c b/dwm.c
index 6295831b976059a604bedb3db5025c6551be12af..96b43f7edfb2a01cd49e891bcfa5966a3057d687 100644 (file)
--- a/dwm.c
+++ b/dwm.c
@@ -689,10 +689,12 @@ dirtomon(int dir) {
 
 void
 drawbar(Monitor *m) {
-       int x, xx, w;
+       int x, xx, w, dx;
        unsigned int i, occ = 0, urg = 0;
        Client *c;
 
+       dx = (drw->fonts[0]->ascent + drw->fonts[0]->descent + 2) / 4;
+
        for(c = m->clients; c; c = c->next) {
                occ |= c->tags;
                if(c->isurgent)
@@ -703,7 +705,7 @@ drawbar(Monitor *m) {
                w = TEXTW(tags[i]);
                drw_setscheme(drw, m->tagset[m->seltags] & 1 << i ? &scheme[SchemeSel] : &scheme[SchemeNorm]);
                drw_text(drw, x, 0, w, bh, tags[i], urg & 1 << i);
-               drw_rect(drw, x, 0, w, bh, m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
+               drw_rect(drw, x + 1, 1, dx, dx, m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
                           occ & 1 << i, urg & 1 << i);
                x += w;
        }
@@ -728,11 +730,11 @@ drawbar(Monitor *m) {
                if(m->sel) {
                        drw_setscheme(drw, m == selmon ? &scheme[SchemeSel] : &scheme[SchemeNorm]);
                        drw_text(drw, x, 0, w, bh, m->sel->name, 0);
-                       drw_rect(drw, x, 0, w, bh, m->sel->isfixed, m->sel->isfloating, 0);
+                       drw_rect(drw, x + 1, 1, dx, dx, m->sel->isfixed, m->sel->isfloating, 0);
                }
                else {
                        drw_setscheme(drw, &scheme[SchemeNorm]);
-                       drw_text(drw, x, 0, w, bh, NULL, 0);
+                       drw_rect(drw, x, 0, w, bh, 1, 0, 1);
                }
        }
        drw_map(drw, m->barwin, 0, 0, m->ww, bh);

diff --git a/util.c b/util.c
index 51acd1aed516d3cdeff714c31b9cd8f455c6c50e..6b703e9b8180fb32ce3e3e018a2bf0124748c797 100644 (file)
--- a/util.c
+++ b/util.c
@@ -2,16 +2,32 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 #include "util.h"
 
+void *
+ecalloc(size_t nmemb, size_t size)
+{
+       void *p;
+
+       if (!(p = calloc(nmemb, size)))
+               perror(NULL);
+       return p;
+}
+
 void
-die(const char *errstr, ...) {
+die(const char *fmt, ...) {
        va_list ap;
 
-       va_start(ap, errstr);
-       vfprintf(stderr, errstr, ap);
+       va_start(ap, fmt);
+       vfprintf(stderr, fmt, ap);
        va_end(ap);
-       exit(EXIT_FAILURE);
-}
 
+       if (fmt[0] && fmt[strlen(fmt)-1] == ':') {
+               fputc(' ', stderr);
+               perror(NULL);
+       }
+
+       exit(1);
+}

diff --git a/util.h b/util.h
index f7ce72174f047a79355b6171de3a251da6ca8618..cded0434301b89014a41219601a8f93e206eea24 100644 (file)
--- a/util.h
+++ b/util.h
@@ -5,3 +5,4 @@
 #define BETWEEN(X, A, B)        ((A) <= (X) && (X) <= (B))
 
 void die(const char *errstr, ...);
+void *ecalloc(size_t, size_t);