On 09/05/2017 01:18 PM, Richard Biener wrote: > On Tue, Sep 5, 2017 at 12:20 PM, Claudiu Zissulescu > <claudiu.zissule...@synopsys.com> wrote: >> Hi guys, >> >> I found an ICE when emitting sjlj dispatch table for ARC. Namely, in >> sjlj_emit_dispatch_table() function, we create a dispatch table where the >> case elements are having the high value is set to NULL (except.c:1326). >> Later, these case statements are used by expand_sjlj_dispatch_table() >> (stmt.c:1006) where we create a case list requiring also the high element >> (stmt.c:1066). This leads to an error when we try to compute the high bounds >> in emit_case_dispatch_table() (stmt.c:786), due to the fact that high value >> is null. >> >> In gcc7.x, we were initializing the high value of case elements in >> sjlj_emit_dispatch_table() with the CASE_LOW. Shouldn't we do the same >> thing, or do I miss something. > > A NULL CASE_HIGH means the case covers a single value, CASE_LOW. > > Probably broken by Martins reorg.
Yes, it's mine and probably dup of PR82154. I've got tested patch that will land soon in @gcc-patches. Martin > > Richard. > >> A test is attached, the error is visible for ARC backend, the option for the >> compiler should be -O2. >> >> Thanks, >> Claudiu
