[Bug bootstrap/100490] gcc 11.1.0 hangs forever while building its own libstdc++ (c++17 floating_from_chars.cc) on aarch64 linux

2021-08-27 Thread pinskia at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100490

Andrew Pinski  changed:

   What|Removed |Added

 Resolution|--- |WORKSFORME
 Status|WAITING |RESOLVED

--- Comment #2 from Andrew Pinski  ---
No feedback in over 3 months and the build has been working for me and others 
GMP and MPFR are known to have been miscompiled before too.

[Bug bootstrap/100490] gcc 11.1.0 hangs forever while building its own libstdc++ (c++17 floating_from_chars.cc) on aarch64 linux

2021-05-09 Thread pinskia at gcc dot gnu.org via Gcc-bugs 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100490

Andrew Pinski  changed:

   What|Removed |Added

   Last reconfirmed||2021-05-09
   Keywords||build
  Component|c++ |bootstrap
 Ever confirmed|0   |1
 Target||aarch64-openmandriva-linux
 Status|UNCONFIRMED |WAITING

--- Comment #1 from Andrew Pinski  ---
#0  0x913cd6b4 in __gmpn_add_n () from /usr/lib64/libgmp.so.10
#1  0x913d6ce8 in __gmpz_add () from /usr/lib64/libgmp.so.10
#2  0x91498dd8 in mpfr_exp_2 () from /usr/lib64/libmpfr.so.6
#3  0x9147c2d0 in mpfr_exp () from /usr/lib64/libmpfr.so.6
#4  0x91488500 in mpfr_pow_general () from /usr/lib64/libmpfr.so.6
#5  0x91489604 in mpfr_pow () from /usr/lib64/libmpfr.so.6


Did you build GMP/MPFR yourself? Did you include it in the sources to have it
built with GCC? 

Is the build of GCC picking up a different header version from the library
version?  (This is known to cause issues).

Note I was able to build GCC 11.1.0 just fine on an aarch64 machine running
ubuntu 1804 without any issues. Both with using the version of gmp/mpfr from
shared library and the one which is that can be gotten from
contrib/download_prerequisites .