schmidt%blanche.ics.uci.edu@ORION.CF.UCI.EDU ("Douglas C. Schmidt") (11/24/88)
Bug Report for GCC: ------------------- Problem : gcc 1.31 gets a fatal signal for the following program when compiled with the -O -finline-functions -fstrength-reduce options. 1.) Version : gcc 1.31 ----------- 2.) Input Program : ----------------- typedef struct _GC *GCPtr; char *alloca(); typedef struct _DDXPoint *DDXPointPtr; typedef struct _DDXPoint { short x, y; } DDXPointRec; typedef struct _DrawInfo *DrawablePtr; typedef struct _GC{ int miTranslate:1; void (* FillSpans)(); } GC; typedef struct _Window *WindowPtr; typedef struct _DrawInfo { short type; } DrawableRec; typedef struct _Window { DDXPointRec absCorner; } WindowRec; typedef struct _SppPoint { double x, y; } SppPointRec, *SppPointPtr; static int GetFPolyYBounds(); void miFillSppPoly(dst, pgc, count, ptsIn, xTrans, yTrans, xFtrans, yFtrans) DrawablePtr dst; GCPtr pgc; int count; SppPointPtr ptsIn; int xTrans, yTrans; double xFtrans, yFtrans; { double xl, xr, ml, mr, dy, i; int y, j, imin, ymin, ymax, *width, *FirstWidth, *Marked; register int left, right, nextleft, nextright; DDXPointPtr ptsOut, FirstPoint; if (pgc->miTranslate && (dst->type == 0 ) ) { xTrans += ((WindowPtr)dst)->absCorner.x; yTrans += ((WindowPtr)dst)->absCorner.y; } imin = GetFPolyYBounds(ptsIn, count, yFtrans, &ymin, &ymax); y = ymax - ymin + 1; ptsOut = FirstPoint = (DDXPointPtr)alloca((int)(sizeof(DDXPointRec) * y)) ; width = FirstWidth = (int *) alloca((int)(sizeof(int) * y)) ; Marked = (int *) alloca((int)(sizeof(int) * count)) ; if(!ptsOut || !width || !Marked || (count < 3) || (y <= 0)) { ; ; ; return; } for(j = 0; j < count; j++) Marked[j] = 0; nextleft = nextright = imin; Marked[imin] = -1; y = (int) ({ double __value, __arg = (ptsIn[nextleft].y + yFtrans); int __fpcr; asm ("fmovel fpcr, %0": "=dm" (__fpcr)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" ((__fpcr & 0xffffffcf) | 0x30)); asm ("fintx %1, %0": "=f" (__value): "f" (__arg)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" (__fpcr)); __value; }) ; do { if ((y > (ptsIn[nextleft].y + yFtrans) || ((((y) - ( ptsIn[nextleft].y + yFtrans)) > 0.0 ? ((y) - ( ptsIn[nextleft].y + yFtrans)) : -((y) - ( ptsIn[nextleft].y + yFtrans))) <= 0.000001 ) ) && Marked[nextleft] != 1) { Marked[nextleft]++; left = nextleft++; if (nextleft >= count) nextleft = 0; dy = ptsIn[nextleft].y - ptsIn[left].y; if (dy != 0.0) { ml = (ptsIn[nextleft].x - ptsIn[left].x) / dy; dy = y - (ptsIn[left].y + yFtrans); xl = (ptsIn[left].x + xFtrans) + ml * (((dy) > ( 0)) ? (dy) : ( 0)) ; } } if ((y > ptsIn[nextright].y + yFtrans) || ((((y) - ( ptsIn[nextright].y + yFtrans)) > 0.0 ? ((y) - ( ptsIn[nextright].y + yFtrans)) : -((y) - ( ptsIn[nextright].y + yFtrans))) <= 0.000001 ) && Marked[nextright] != 1) { Marked[nextright]++; right = nextright--; if (nextright < 0) nextright = count - 1; dy = ptsIn[nextright].y - ptsIn[right].y; if (dy != 0.0) { mr = (ptsIn[nextright].x - ptsIn[right].x) / dy; dy = y - (ptsIn[right].y + yFtrans); xr = (ptsIn[right].x + xFtrans) + mr * (((dy) > ( 0)) ? (dy) : ( 0)) ; } } i = ((((ptsIn[nextleft].y) < ( ptsIn[nextright].y)) ? (ptsIn[nextleft].y) : ( ptsIn[nextright].y)) + yFtrans) - y; if (i < 0.000001 ) { if(Marked[nextleft] && Marked[nextright]) { break; } continue; } else { j = (int) i; if(!j) j++; } while (j > 0) { ptsOut->y = (y) + yTrans; if (xl < xr) { *(width++) = ({ double __value, __arg = (xr); int __fpcr; asm ("fmovel fpcr, %0": "=dm" (__fpcr)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" ((__fpcr & 0xffffffcf) | 0x30)); asm ("fintx %1, %0": "=f" (__value): "f" (__arg)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" (__fpcr)); __value; }) - ({ double __value, __arg = (xl); int __fpcr; asm ("fmovel fpcr, %0": "=dm" (__fpcr)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" ((__fpcr & 0xffffffcf) )); asm ("fintx %1, %0": "=f" (__value): "f" (__arg)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" (__fpcr)); __value; }) ; (ptsOut++)->x = ({ double __value, __arg = (xl); int __fpcr; asm ("fmovel fpcr, %0": "=dm" (__fpcr)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" ((__fpcr & 0xffffffcf) | 0x30)); asm ("fintx %1, %0": "=f" (__value): "f" (__arg )); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" (__fpcr)); __value; }) + xTrans; } else { *(width++) = ({ double __value, __arg = (xl); int __fpcr; asm ("fmovel fpcr, %0": "=dm" (__fpcr)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" ((__fpcr & 0xffffffcf) | 0x30)); asm ("fintx %1, %0": "=f" (__value): "f" (__arg)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" (__fpcr)); __value; }) - ({ double __value, __arg = (xr); int __fpcr; asm ("fmovel fpcr, %0": "=dm" (__fpcr)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" ((__fpcr & 0xffffffcf) )); asm ("fintx %1, %0": "=f" (__value): "f" (__arg)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" (__fpcr)); __value; }) ; (ptsOut++)->x = ({ double __value, __arg = (xr); int __fpcr; asm ("fmovel fpcr, %0": "=dm" (__fpcr)); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" ((__fpcr & 0xffffffcf) | 0x30)); asm ("fintx %1, %0": "=f" (__value): "f" (__arg )); asm volatile ("fmovel %1, fpcr": "=m" (*(char *)0): "dm" (__fpcr)); __value; }) + xTrans; } y++; xl += ml; xr += mr; j--; } } while (y <= ymax); (*pgc->FillSpans)(dst, pgc, ptsOut-FirstPoint, FirstPoint, FirstWidth, 1); } 3.) Command Used : gcc -O -finline-functions -fstrength-reduce ---------------- 4.) Files used : -------------- tm.h -> tm-sparc.h md -> sparc.md config.h -> xm-sunos4.h aux-output.c -> output-sparc.c 5.) Machine(s) used : ------------------- Sun 4 running Sun4.0 6.) Compiler diagnostics : ------------------------ gcc version 1.31 /usr/public/lib/gcc/gcc-cpp -v -I/cd/ua/schmidt/include/ -undef -D__GNU__ -D__GNUC__ -Dsparc -Dsun -Dunix -D__OPTIMIZE__ quinn-bug.1.30.c /tmp/cca18663.cpp GNU CPP version 1.31 /usr/public/lib/gcc/gcc-cc1 /tmp/cca18663.cpp -quiet -dumpbase quinn-bug.1.30.c -finline-functions -finline-functions -fstrength-reduce -O -version -o /tmp/cca18663.s /usr/public/gcc: Program cc1 got fatal signal 11.