Hi,
-O2 command line option and optimize("O0") (#pragma GCC optimize ("O0")
or __attribute__((optimize("O0")))) sometimes leads to internal compiler
error with trace:
internal compiler error: in parm_ref_data_preserved_p, at
ipa-prop.c:740
}
^
0x898982b ipcp_generate_summary
/home/pam/tmp/gcc_source/gcc/ipa-cp.c:3640
0x84d5d13 execute_ipa_summary_passes(ipa_opt_pass_d*)
/home/pam/tmp/gcc_source/gcc/passes.c:2136
0x825bef4 ipa_passes
/home/pam/tmp/gcc_source/gcc/cgraphunit.c:1846
0x825bef4 compile()
/home/pam/tmp/gcc_source/gcc/cgraphunit.c:1952
0x825cf39 finalize_compilation_unit()
/home/pam/tmp/gcc_source/gcc/cgraphunit.c:2106
0x810addb c_write_global_declarations()
/home/pam/tmp/gcc_source/gcc/c/c-decl.c:10118
There is a bug about problem with example code to reproduce
(http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57358 comment #2) but no
responses there. Could anybody take a look at this? This problem appears
in 4.8.0 version and still observed in latest gcc sources (4.9.0
20130610 (experimental))
--
Aleksandr Platonov
