gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit type 'long unsigned int'

gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit type 'long unsigned int'

[Toon Moene]

I just ran a "ubsan" build on my x86_64-linux-gnu system.

See: https://gcc.gnu.org/pipermail/gcc-testresults/2022-February/754454.html

This is an interesting failure:

Executing on host: 
/home/toon/scratch/bld1142336/gcc/testsuite/gfortran29/../../gfortran 
-B/home/toon/scratch/bld1142336/gcc/testsuite/gfortran29/../../ 
-B/home/toon/scratch/bld1142336/x86_64-pc-linux-gnu/./libgfortran/ 
/home/toon/compilers/gcc/gcc/testsuite/gfortran.dg/graphite/pr39516.f 
  -fdiagnostics-plain-output  -fdiagnostics-plain-output    -O  -O2 
-ftree-loop-linear -S -o pr39516.s    (timeout = 300)
spawn -ignore SIGHUP 
/home/toon/scratch/bld1142336/gcc/testsuite/gfortran29/../../gfortran 
-B/home/toon/scratch/bld1142336/gcc/testsuite/gfortran29/../../ 
-B/home/toon/scratch/bld1142336/x86_64-pc-linux-gnu/./libgfortran/ 
/home/toon/compilers/gcc/gcc/testsuite/gfortran.dg/graphite/pr39516.f 
-fdiagnostics-plain-output -fdiagnostics-plain-output -O -O2 
-ftree-loop-linear -S -o pr39516.s
gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit 
type 'long unsigned int'
FAIL: gfortran.dg/graphite/pr39516.f   -O  (test for excess errors)
Excess errors:
gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit 
type 'long unsigned int'

Note that the test case is pure Fortran source. The undefined error 
seems to come from a function inside the graphite library ...

Kind regards,

-- 
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands

Re: gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit type 'long unsigned int'

[Marc Glisse]

On Tue, 1 Feb 2022, Toon Moene wrote:

> I just ran a "ubsan" build on my x86_64-linux-gnu system.
>
> See: https://gcc.gnu.org/pipermail/gcc-testresults/2022-February/754454.html
>
> This is an interesting failure:
>
> Executing on host: 
> /home/toon/scratch/bld1142336/gcc/testsuite/gfortran29/../../gfortran 
> -B/home/toon/scratch/bld1142336/gcc/testsuite/gfortran29/../../ 
> -B/home/toon/scratch/bld1142336/x86_64-pc-linux-gnu/./libgfortran/ 
> /home/toon/compilers/gcc/gcc/testsuite/gfortran.dg/graphite/pr39516.f 
> -fdiagnostics-plain-output  -fdiagnostics-plain-output    -O  -O2 
> -ftree-loop-linear -S -o pr39516.s    (timeout = 300)
> spawn -ignore SIGHUP 
> /home/toon/scratch/bld1142336/gcc/testsuite/gfortran29/../../gfortran 
> -B/home/toon/scratch/bld1142336/gcc/testsuite/gfortran29/../../ 
> -B/home/toon/scratch/bld1142336/x86_64-pc-linux-gnu/./libgfortran/ 
> /home/toon/compilers/gcc/gcc/testsuite/gfortran.dg/graphite/pr39516.f 
> -fdiagnostics-plain-output -fdiagnostics-plain-output -O -O2 
> -ftree-loop-linear -S -o pr39516.s
> gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit type 
> 'long unsigned int'
> FAIL: gfortran.dg/graphite/pr39516.f   -O  (test for excess errors)
> Excess errors:
> gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit type 
> 'long unsigned int'
>
> Note that the test case is pure Fortran source. The undefined error seems to 
> come from a function inside the graphite library ...

Maybe try with a more recent version of GMP first? gcd_1.c has only 103 
lines in release 6.2.1.

A stack trace (UBSAN_OPTIONS=print_stacktrace=1) would make it easier to 
guess where this is coming from.

-- 
Marc Glisse

Re: gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit type 'long unsigned int'

[Toon Moene]

On 2/1/22 22:44, Marc Glisse wrote:

> On Tue, 1 Feb 2022, Toon Moene wrote:
> 
>> I just ran a "ubsan" build on my x86_64-linux-gnu system.

> Maybe try with a more recent version of GMP first? gcd_1.c has only 103 
> lines in release 6.2.1.
> 
> A stack trace (UBSAN_OPTIONS=print_stacktrace=1) would make it easier to 
> guess where this is coming from.

Fascinating. My gcc directory had both gmp-6.2.1 and -6.1.0, but the 
symbolic link 'gmp' pointed to the old one. A similar problem for mpc, 
mpfr and isl ... I will retest.

Thanks !

-- 
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands

Re: gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit type 'long unsigned int'

[Marc Glisse]

On Wed, 2 Feb 2022, Toon Moene wrote:

> Fascinating. My gcc directory had both gmp-6.2.1 and -6.1.0, but the symbolic 
> link 'gmp' pointed to the old one. A similar problem for mpc, mpfr and isl 
> ...

You need to pass --force to contrib/download_prerequisites if you want 
them to be updated.

-- 
Marc Glisse

Re: gcd_1.c:188:13: runtime error: shift exponent 64 is too large for 64-bit type 'long unsigned int'

[Toon Moene]

On 2/2/22 10:11, Marc Glisse wrote:

> On Wed, 2 Feb 2022, Toon Moene wrote:
> 
>> Fascinating. My gcc directory had both gmp-6.2.1 and -6.1.0, but the 
>> symbolic link 'gmp' pointed to the old one. A similar problem for mpc, 
>> mpfr and isl ...
> 
> You need to pass --force to contrib/download_prerequisites if you want 
> them to be updated.
> 
Ah, that's useful, didn't know that.

-- 
Toon Moene - e-mail: toon@moene.org - phone: +31 346 214290
Saturnushof 14, 3738 XG  Maartensdijk, The Netherlands