[Bug lto/65559] [5 Regression] lto1.exe: internal compiler error: in read_cgraph_and_symbols, at lto/lto.c:2947

rguenth at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Tue Apr 7 11:13:00 GMT 2015


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65559

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
3
fprintf.o 2
195 905fe68a PREVAILING_DEF_IRONLY main_test
233 905fe68a RESOLVED_EXEC __iob_func
fprintf-lib.o 1
263 905f8622 RESOLVED_IR inside_main
main.o 3
172 905f8490 PREVAILING_DEF main
179 905f8490 PREVAILING_DEF_IRONLY inside_main
175 905f8490 RESOLVED_IR main_test

but we have only

fprintf.o
main.o

as inputs (from ccm7oRxV).  That file is generated from lto-wrapper which
already gets fprintf-lib.o stripped somehow (cc8SwjwK).  collect2.c still
sees all inputs.

Unfortunately -Wl,-debug is missing ;)

It would be interesting to see the lto-wrapper invocation (is there sth like
strace on mingw?) and to eventually attach to lto-wrapper with a debugger...

We seem to use a linker plugin, so the error may even start there.



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