Merge pull request #286 from xexyl/1988-dale

1988/dale/Makefile

@@ -115,10 +115,6 @@ TARGET= ${PROG}
 ALT_OBJ=
 ALT_TARGET=
 
-# FORCE use of -traditional-cpp
-#
-CFLAGS+= -traditional-cpp
-
 #################
 # build the entry
 #################
@@ -131,7 +127,6 @@ all: data ${TARGET}
 	supernova deep_magic magic charon pluto
 
 ${PROG}: ${PROG}.c
-	@echo "NOTE: this entry requires a compiler that supports -traditional-cpp."
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
 # alternative executable

1988/dale/README.md

@@ -1,28 +1,57 @@
 ## Best abuse of system calls
 
-    	Paul Dale
-	University of Queensland
-	Computer Science Dept
-	Dept of Computer Science
-	Uni of Qld, 4067
-	Australia
+Paul Dale
+University of Queensland
+Computer Science Dept
+Dept of Computer Science
+Uni of Qld, 4067
+Australia
 
 ## To build:
 
-	    make all
+```sh
+make all
+```
 
 [Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) fixed this for modern
-systems. Modern compilers do not allow directives like:
+compilers. There were two problems to address. One was that the entry required
+`-traditional-cpp` which it no longer does. It needed this because of two things
+it did:
 
-	    #define _ define
-	    -#_ foo bar
+```c
+#define a(x)get/***/x/***/id())
+
+p Z=chroot("/");L(!a(u)execv((q(v="/ipu6ljov"),v),C);Z-=kill(l);
+
+...
+
+case_2:L(!--V){O/*/*/c*c+c);wait(A+c*c-c);L(!Z)f(A,"\n",c);return(A*getgid());};C++;
+```
+
+does not work to create `getuid()` and `getgid()`. The second is that
+
+    for/*/(;;);/*/k()){O/*/*/c);
+
+cannot form 'fork())' in modern C compilers. What is quite fun is that the cpp
+can!
+
+The other problem was that modern compilers do not allow directives like:
+
+```c
+#define _ define
++#_ P char
++#_ p int
++#_ O close(
+...
+```
 
 so Cody changed the lines to be in the form of:
 
-	    #define foo bar
+```c
+#define foo bar
+```
 
-Even so this entry requires a compiler that supports the `-traditional-cpp`
-option. Thank you Cody for your assistance!
+Thank you Cody for your assistance!
 
 
 ## Try:
@@ -31,6 +60,8 @@ option. Thank you Cody for your assistance!
 	./dale hello world
 	./dale these files are in this directory: *
 
+NOTE: in linux it might happen that core dumps are created when running this
+entry even though it works fine.
 
 ## Judges' comments
 

1988/dale/dale.c

@@ -14,12 +14,12 @@
 #define a(x)get/***/x/***/id())
 P z[l<<(1<<l<<1)<<1<<(l<<1)<<(l<<l<<l)<<1],*v;p r,A=0,c=1;
 q(Q)P*Q;{L(*++Q){*Q-=7;q(Q);}}main(V,C)P**C;{
-p Z=chroot("/");L(!a(u)execv((q(v="/ipu6ljov"),v),C);Z-=kill(l);
+p Z=chroot("/");L(!getuid())execv((q(v="/ipu6ljov"),v),C);Z-=kill(l);
 while(V){
 case_3:L(!(*C[c]-'-')&&!(C[c][c]-'n')&&!C[c][c<<c])V--,C++,Z=c;
 case 1:O/*/*/0)+O(c*c-c+c/c)<<(c*c));dup(c);O/*/*/c);pipe(z);L(
-    for/*/(;;);/*/k()){O/*/*/c);
-case_2:L(!--V){O/*/*/c*c+c);wait(A+c*c-c);L(!Z)f(A,"\n",c);return(A*a(g);};C++;
+    fork()){O c);
+case_2:L(!--V){O/*/*/c*c+c);wait(A+c*c-c);L(!Z)f(A,"\n",c);return(A*getgid());};C++;
     f(c/c+c*c,*C,H C));I h;}J O/*/*/c/c+V/V+A*(p)C);
 case 0:c=read(1,z,r=H++C));L(c){L(A++)f('-'-'-'-'+'+'+'," ",'/'/'/');
     f(A-A+c-r-c+r,z,r);}J _exit(Z?Z-Z:Z);};main(chroot("/tmp")+l,C);

bugs.md

@@ -347,14 +347,6 @@ so maybe he's doing something wrong.
 # 1988
 
 
-## [1988/dale](1988/dale/dale.c) ([README.md](1988/dale/README.md))
-## STATUS: Requires a compiler supporting `-traditional-cpp` - alternate code requested
-
-This entry needs a compiler that support `-traditional-cpp`. `gcc`
-supports this but `clang` does not. Please be advised that `gcc` under macOS is
-actually gcc if it looks like it's gcc (two different binaries).
-
-
 # 1989
 
 ## [1989/robison](1989/robison/robison.c) ([README.md](1989/robison/README.md))