> On Oct 9, 2017, at 5:33 AM, Richard Earnshaw (lists) > <richard.earns...@arm.com> wrote: > > On 06/10/17 20:56, Qing Zhao wrote: >> Thanks a lot for Wilco’s help on this bug. >> >> Yes, Aarch64 does NOT do anything wrong. >> >> The implementation of __builtin_update_setjmp_buf is not correct. It takes a >> pointer >> as an operand and treats the Mode of the pointer as Pmode, which is not >> correct. >> a conversion from ptr_mode to Pmode is needed for this pointer. >> >> bootstrapped on aarch64-unknown-linux-gnu. >> testing on aarch64-unknown-linux-gnu is running. >> > > This is more believable for AArch64, but we need to be careful here. I > think this needs testing on at least one other target that has a > ilp32-on-64-bit ABI, eg x86_64's x32 ABI.
I just built the latest upstream GCC on x86_64 Linux. and use it to compile the testing case in PR80295 with the following options: [qinzhao@qzh-ol6-test 80295]$ cat t.c void f (void *b) { __builtin_update_setjmp_buf (b); } [qinzhao@qzh-ol6-test 80295]$ sh t /home/qinzhao/Install/latest/bin/gcc -m32 t.c it compiles successfully on x86_64. no similar issue as aarch64. DId I use the correct option on X86 (i.e -m32)? Qing > > > R. >