I ran the compiler [EMAIL PROTECTED] src]$ ~/gnu/20050107/results/bin/gcc -Os -c b.c b.c: In function `__ansicon_write': b.c:57: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions.
I tried valgrind [EMAIL PROTECTED] src]$ ~/valgrind/results.220/bin/valgrind -q --trace-children=yes --tool=memcheck ~/gnu/20050107/results/bin/gcc -Os -c b.c ==5131== Invalid read of size 2 ==5131== at 0x8290EB5: memory_operand (recog.c:1336) ==5131== by 0x81AE70D: get_attr_memory (insn-attrtab.c:24474) ==5131== by 0x81C7BBD: result_ready_cost (insn-attrtab.c:19373) ==5131== by 0x835C78B: priority (haifa-sched.c:881) ==5131== Address 0xABABABAB is not stack'd, malloc'd or (recently) free'd The source code is -------------------------------------------------------------------------------- typedef unsigned char uint8_t; typedef unsigned short uint16_t; typedef unsigned int size_t; typedef signed int ptrdiff_t; typedef ptrdiff_t ssize_t; struct curxy { uint8_t x, y; } __attribute__((packed)); enum ansi_state { st_init, st_esc, st_csi, }; struct term_state { int disabled; enum ansi_state state; }; static struct term_state st; static void ansicon_putchar(int ch) { const int rows = (*(uint8_t *)0x484) ? (*(uint8_t *)0x484)+1 : 25; const int cols = (*(uint16_t *)0x44A); const int page = (*(uint8_t *)0x462); struct curxy xy = ((struct curxy *)0x450)[page]; switch ( st.state ) { case st_init: switch ( ch ) { case '\b': if ( xy.x > 0 ) xy.x--; break; } break; } while ( xy.y >= rows ) { } } ssize_t __ansicon_write( const void *buf, size_t count) { const unsigned char *bufp = buf; size_t n = 0; while ( count-- ) { ansicon_putchar(*bufp++); } return n; } --------------------------------------------------------------------------- -- Summary: -Os causes internal compiler error in gcc-3.4-20050107 Product: gcc Version: 3.4.4 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dcb314 at hotmail dot com CC: gcc-bugs at gcc dot gnu dot org GCC host triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19423