[Bug middle-end/20623] ICE: fold check: original tree changed by fold with --enable-checking=fold

[zsojka at seznam dot cz]

------- Comment #40 from zsojka at seznam dot cz  2010-02-27 14:06 -------
Follown file fails at all opt levels at both x86_64 and i?86:

---------- testcase.cpp ----------
namespace {
  bool bar(int i) { return i; }
}
int foo(int i) { return bar(i) ? i : 0; }
----------------------------------

It was reduced from dyncast.cc (bootstrap fails there).

$ /mnt/sdb1/build-157106-checking-fold/gcc/cc1plus -O1 testcase.cpp
 bool<unnamed>::bar(int) int foo(int)
Analyzing compilation unit
Performing interprocedural optimizations
 <visibility> <*free_lang_data> <early_local_cleanups> <whole-program> <inline>
<static-var> <pure-const>Assembling functions:
 int foo(int)
testcase.cpp: In function &#8216;int foo(int)&#8217;:
testcase.cpp:4:5: internal compiler error: fold check: original tree changed by
fold
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20623