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From: anders.blomdell@control.lth.se To: gcc-gnats@gcc.gnu.org Subject: optimization/6025: linux m68k-elf-gcc segfault Date: Thu, 21 Mar 2002 09:26:00 -0000 [thread overview] Message-ID: <200203211721.g2LHLdg22144@localhost.localdomain> (raw) >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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