http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53168
Bug #: 53168 Summary: ICE in find_or_generate_expression, at tree-ssa-pre.c:3053 Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassig...@gcc.gnu.org ReportedBy: reg...@cs.utah.edu CC: cheny...@cs.utah.edu [regehr@dyson r44]$ current-gcc -c -O2 small.c small.c: In function 'fn3': small.c:7:1: internal compiler error: in find_or_generate_expression, at tree-ssa-pre.c:3053 fn3 () ^ Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. [regehr@dyson r44]$ cat small.c int a, b, c; unsigned *d; int e[1]; void fn1 (); int fn2 (); int fn3 () { int *f = &a; if (fn2 ()) { for (; c; c++) { e[a] && (b = 0); fn1 (); if (e[a]) return 0; } for (; c <= 0; c++) for (;;) ; } else e[0] = 0 != (d = f); return *d; } [regehr@dyson r44]$ current-gcc -v Using built-in specs. COLLECT_GCC=current-gcc COLLECT_LTO_WRAPPER=/uusoc/exports/scratch/regehr/z/compiler-install/gcc-r186954-install/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper Target: x86_64-unknown-linux-gnu Configured with: ../configure --with-libelf=/usr/local --enable-lto --prefix=/home/regehr/z/compiler-install/gcc-r186954-install --program-prefix=r186954- --enable-languages=c,c++ Thread model: posix gcc version 4.8.0 20120430 (experimental) (GCC)