https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88580
--- Comment #1 from Zavadovsky Yan ---
Got same bug with all GCC version since (at least, doesn't check older
versions) 6.3.0 and newer.
Code:
struct Base
{
Base(void*) { }
virtual ~Base() { }
};
template< typename... Ts > stru
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88580
--- Comment #2 from Zavadovsky Yan ---
Created attachment 47622
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=47622&action=edit
test.ii
gcc --save-temps output
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88580
--- Comment #3 from Zavadovsky Yan ---
(In reply to Petr Filipsky from comment #0)
> Sorry if this kind of error has been reported already (I know that there are
> already several bugs reported regarding variadic template parameter
> expansion bu
++
Assignee: unassigned at gcc dot gnu.org
Reporter: zavadovsky.yan at gmail dot com
Target Milestone: ---
Created attachment 45268
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45268&action=edit
code to trigger the bug
Hello.
I have got some piece of source cod
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88562
--- Comment #1 from Zavadovsky Yan ---
Created attachment 45269
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45269&action=edit
ReadQm_Os.s
Add full assembler output with buggy code.
Command to compile: 'sh4-unknown-linux-gnu-g++ -Os -S
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88562
--- Comment #2 from Zavadovsky Yan ---
Created attachment 45270
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45270&action=edit
ReadQm_Os_no_expensive_optimizations.s
Add full assembler output with NON-buggy code.
Command to compile: 'sh
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88562
--- Comment #3 from Zavadovsky Yan ---
Created attachment 45271
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45271&action=edit
main.cpp
Add some testing code.
Command to compile: './820/bin/sh4-unknown-linux-gnu-g++
--sysroot=./820/sh4-
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88562
--- Comment #4 from Zavadovsky Yan ---
Some additional note.
Test code is placed in separate file from 'Read32' function implementation
because inlining of 'Read32' will avoid bug.
Full source file on which bug was observed has about 300 lines
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: zavadovsky.yan at gmail dot com
Target Milestone: ---
Created attachment 45299
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45299&action=edit
main.cpp: code to trigger
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88630
--- Comment #1 from Zavadovsky Yan ---
Rewriting code as
float float_val = ;
int int_val = -(int)float_val;
avoids bug.
And rewriting code as
double float_val = ;
int int_val = -float_val;
also avoids bug.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88630
--- Comment #2 from Zavadovsky Yan ---
Created attachment 45300
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45300&action=edit
main494.s: assembler output from GCC-4.9.4
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88630
--- Comment #3 from Zavadovsky Yan ---
Created attachment 45301
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45301&action=edit
main820.s: assembler output from GCC-8.2.0
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88630
--- Comment #4 from Zavadovsky Yan ---
Compilation command:
sh4-unknown-linux-gnu-g++ --sysroot=../8.2.0/sh4-unknown-linux-gnu/sysroot
-static -Os -o test820 main.cpp
GCC info:
Using built-in specs.
COLLECT_GCC=../000_sh4_gcc/820/bin/sh4-unknown
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88630
--- Comment #5 from Zavadovsky Yan ---
Created attachment 45302
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45302&action=edit
main.ii: -save-temps output
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88630
--- Comment #7 from Zavadovsky Yan ---
Hello.
>your posted disassembly doesn't seem to match
>the actual source that you have posted
Sorry, my mistake.
Seems that I attached some temporary ASM sources.
Must be check for -12, of course.
>The
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88562
--- Comment #11 from Zavadovsky Yan ---
Thanks for fixing!
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88562
--- Comment #12 from Zavadovsky Yan ---
I've checked this patch locally on our STiH237 hardware.
Using GCC 8.2 built by crosstool-ng.
It works!
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88630
--- Comment #9 from Zavadovsky Yan ---
>Can you try it out please and see
>if it fixes the issue on your hardware?
Checked GCC 8.2 + your patch and crosstool-ng to build toolchain(using same
config as I've used while reporting bug).
At least it
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88630
--- Comment #11 from Zavadovsky Yan ---
>We can set it as a default behavior for all FPU-capable SH4 variants,
>but that will pessimize it for everything.
>The other option is to enable this only for your specific CPU (ST-40),
>which would req
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88630
--- Comment #13 from Zavadovsky Yan ---
(In reply to Oleg Endo from comment #12)
>
> Please try it out. Let me know what you find
GCC 8.2 + "trial patch" : assert passed
GCC 8.2 + "patch from comment 12" : assert failed
GCC 8.2 + "patch from c
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