https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95059
Bug ID: 95059
Summary: GCCGO cannot be compiled for ARM64 ILP32 ABI
Product: gcc
Version: 10.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: go
Assignee: ian at airs dot com
Reporter: mikulas at artax dot karlin.mff.cuni.cz
CC: cmang at google dot com
Target Milestone: ---
Compiling gcc on ARM64 with these options fails. It worked on gcc 9.
#!/bin/sh
set -e
MAKEFLAGS=-j4
export MAKEFLAGS
../gcc-10.1.0/configure \
--prefix=/usr/local/gcc-10.1.0-fail/ \
--enable-lto \
--with-system-zlib \
--enable-languages=c,c++,go \
--enable-multilib \
--with-multilib-list=lp64,ilp32 \
--disable-libsanitizer
nice -n 20 make
../../../../gcc-10.1.0/libgo/go/runtime/mpagealloc.go:226:38: error: shift
count overflow
226 | chunks [1 << pallocChunksL1Bits]*[1 << pallocChunksL2Bits]pallocData
| ^
../../../../gcc-10.1.0/libgo/go/runtime/mgcscavenge.go:530:15: error: shift
count overflow
530 | l2 := (*[1 <<
pallocChunksL2Bits]pallocData)(atomic.Loadp(unsafe.Pointer(&s.chunks[i.l1()])))
| ^
../../../../gcc-10.1.0/libgo/go/runtime/mpagealloc.go:138:22: error: shift
count overflow
138 | return uint(i) & (1<<pallocChunksL2Bits - 1)
| ^
../../../../gcc-10.1.0/libgo/go/runtime/mpagealloc.go:129:21: error: integer
constant overflow
129 | return uint(i) >> pallocChunksL1Shift
| ^
../../../../gcc-10.1.0/libgo/go/runtime/mpagealloc_64bit.go:34:2: error:
integer constant overflow
34 | summaryL0Bits,
| ^
make[8]: *** [Makefile:2865: runtime.lo] Chyba 1
make[8]: *** Čeká se na nedokončené úlohy…
