diff options
Diffstat (limited to 'bugs/sgiccbug.c')
| -rw-r--r-- | bugs/sgiccbug.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/bugs/sgiccbug.c b/bugs/sgiccbug.c deleted file mode 100644 index 178239d..0000000 --- a/bugs/sgiccbug.c +++ /dev/null @@ -1,57 +0,0 @@ -/* NOCW */ -/* sgibug.c */ -/* bug found by Eric Young (eay@mincom.oz.au) May 95 */ - -#include <stdio.h> - -/* This compiler bug it present on IRIX 5.3, 5.1 and 4.0.5 (these are - * the only versions of IRIX I have access to. - * defining FIXBUG removes the bug. - * (bug is still present in IRIX 6.3 according to - * Gage <agage@forgetmenot.Mines.EDU> - */ - -/* Compare the output from - * cc sgiccbug.c; ./a.out - * and - * cc -O sgiccbug.c; ./a.out - */ - -static unsigned long a[4]={0x01234567,0x89ABCDEF,0xFEDCBA98,0x76543210}; -static unsigned long b[4]={0x89ABCDEF,0xFEDCBA98,0x76543210,0x01234567}; -static unsigned long c[4]={0x77777778,0x8ACF1357,0x88888888,0x7530ECA9}; - -main() - { - unsigned long r[4]; - sub(r,a,b); - fprintf(stderr,"input a= %08X %08X %08X %08X\n",a[3],a[2],a[1],a[0]); - fprintf(stderr,"input b= %08X %08X %08X %08X\n",b[3],b[2],b[1],b[0]); - fprintf(stderr,"output = %08X %08X %08X %08X\n",r[3],r[2],r[1],r[0]); - fprintf(stderr,"correct= %08X %08X %08X %08X\n",c[3],c[2],c[1],c[0]); - } - -int sub(r,a,b) -unsigned long *r,*a,*b; - { - register unsigned long t1,t2,*ap,*bp,*rp; - int i,carry; -#ifdef FIXBUG - unsigned long dummy; -#endif - - ap=a; - bp=b; - rp=r; - carry=0; - for (i=0; i<4; i++) - { - t1= *(ap++); - t2= *(bp++); - t1=(t1-t2); -#ifdef FIXBUG - dummy=t1; -#endif - *(rp++)=t1&0xffffffff; - } - } |
