https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916
--- Comment #5 from Qirun Zhang <helloqirun at gmail dot com> --- (In reply to Qirun Zhang from comment #4) > (In reply to rguent...@suse.de from comment #3) > > On Tue, 19 Jul 2016, marxin at gcc dot gnu.org wrote: > > > > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71916 > > > > > > Martin Liška <marxin at gcc dot gnu.org> changed: > > > > > > What |Removed |Added > > > ---------------------------------------------------------------------------- > > > CC| |rguenth at gcc dot > > > gnu.org > > > > > > --- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> --- > > > Started with r233209: > > > > > > 2016-02-08 Richard Biener <rguent...@suse.de> > > > > > > PR rtl-optimization/69274 > > > * ira.c (ira_setup_alts): Do not change recog_data.operand > > > order. > > > > > > * gcc.target/i386/addr-sel-1.c: XFAIL. > > > > This patch is known to change register allocation thus it very likely > > just uncovers a latent issue. > > Hi Richard, > > I have another testcase. This time, it crashes only in 32-bit mode while the > 64-bit mode works just fine. > > The ICE trace is exact the same as the original one. I am not sure if they > are the same.. > > > The testcase is: > > int a, b, d, f; > volatile int c; > volatile int e; > long long(fn1)() {} > char fn2(int *p1) { > if (fn1(f)) > e; > } > int *fn3() {} > short fn4() { b = 0; } > void fn5() { > b = 2; > a || fn2(fn3(fn4())); > char g[4]; > int i; > for (; c; d++) > ; > for (e; b < 4; i++) > g[i] = 9; > for (; b;) > ; > } $ gcc-trunk -O3 abc.c -c $ gcc-trunk -O3 abc.c -c -m32 abc.c: In function ‘fn5’: abc.c:22:1: internal compiler error: in maybe_record_trace_start, at dwarf2cfi.c:2284 } ^ 0x7e0d80 maybe_record_trace_start ../../gcc/gcc/dwarf2cfi.c:2284 0x7e1085 create_trace_edges ../../gcc/gcc/dwarf2cfi.c:2376 0x7e31d1 scan_trace ../../gcc/gcc/dwarf2cfi.c:2590 0x7e3cca create_cfi_notes ../../gcc/gcc/dwarf2cfi.c:2616 0x7e3cca execute_dwarf2_frame ../../gcc/gcc/dwarf2cfi.c:2974 0x7e3cca execute ../../gcc/gcc/dwarf2cfi.c:3454 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See <http://gcc.gnu.org/bugs.html> for instructions.
