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* optimization/6025: linux m68k-elf-gcc segfault
@ 2002-03-21 9:26 anders.blomdell
0 siblings, 0 replies; only message in thread
From: anders.blomdell @ 2002-03-21 9:26 UTC (permalink / raw)
To: gcc-gnats
>Number: 6025
>Category: optimization
>Synopsis: linux m68k-elf-gcc cross compiler segfault
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Thu Mar 21 09:25:59 PST 2002
>Closed-Date:
>Last-Modified:
>Originator: Anders Blomdell <anders.blomdell@control.lth.se>
>Release: 3.0.4
>Organization:
Department of Automatic Control, LTH
>Environment:
System: Linux aljazari 2.4.13-KURT #2 Thu Nov 8 10:49:33 CET 2001 i686 unknown
Architecture: i686
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: m68k-unknown-elf
configured with: ../../../gcc-3.0.4/configure --prefix=/usr/local/packages/cross/m68k-elf --target=m68k-elf --with-newlib
>Description:
gcc segfaults when the supplied program is compiled with
m68k-elf-gcc -v -save-temps -c -O3 segfault.c
>How-To-Repeat:
######################## segfault.c #################################
static void Copy(int destination, int source)
{
*(int*)destination = *(int*)source;
}
void SegFaultWhenCompiling(int i)
{
for (;;) {
switch (i) {
case 0:;
Copy(0x400000, 0x400000);
break;
case 1:;
Copy(0x0, 0x0);
break;
case 2:;
Copy(0x0, 0x0);
break;
case 4:;
Copy(0x0, 0x0);
break;
case 3:;
Copy(0xFFFF0000, 0xFFFF0000);
break;
default :
Copy(0x400000, 0x01);
break;
}
}
}
void f()
{
SegFaultWhenCompiling(0);
}
######################## segfault.i #################################
# 5 "segfault.c"
static void Copy(int destination, int source)
{
*(int*)destination = *(int*)source;
}
void SegFaultWhenCompiling(int i)
{
for (;;) {
switch (i) {
case 0:;
Copy(0x400000, 0x400000);
break;
case 1:;
Copy(0x0, 0x0);
break;
case 2:;
Copy(0x0, 0x0);
break;
case 4:;
Copy(0x0, 0x0);
break;
case 3:;
Copy(0xFFFF0000, 0xFFFF0000);
break;
default :
Copy(0x400000, 0x01);
break;
}
}
}
void f()
{
SegFaultWhenCompiling(0);
}
# 5 "segfault.c"
static void Copy(int destination, int source)
{
*(int*)destination = *(int*)source;
}
void SegFaultWhenCompiling(int i)
{
for (;;) {
switch (i) {
case 0:;
Copy(0x400000, 0x400000);
break;
case 1:;
Copy(0x0, 0x0);
break;
case 2:;
Copy(0x0, 0x0);
break;
case 4:;
Copy(0x0, 0x0);
break;
case 3:;
Copy(0xFFFF0000, 0xFFFF0000);
break;
default :
Copy(0x400000, 0x01);
break;
}
}
}
void f()
{
SegFaultWhenCompiling(0);
}
######################## segfault.s #################################
.file "segfault.i"
######################## console output #################################
> m68k-elf-gcc -save-temps -c -O3 segfault.c
segfault.c: In function `SegFaultWhenCompiling':
segfault.c:40: Internal error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
>Fix:
Lower -O level, code rearrangement
>Release-Note:
>Audit-Trail:
>Unformatted:
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