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* [Bug libfortran/81986] sanitizer detects negation of large number in string.c [not found] <bug-81986-4@http.gcc.gnu.org/bugzilla/> @ 2021-02-27 9:21 ` zeccav at gmail dot com 2021-02-28 11:04 ` dominiq at lps dot ens.fr ` (4 subsequent siblings) 5 siblings, 0 replies; 6+ messages in thread From: zeccav at gmail dot com @ 2021-02-27 9:21 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81986 Vittorio Zecca <zeccav at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|sanitizer |libfortran --- Comment #4 from Vittorio Zecca <zeccav at gmail dot com> --- On current trunk with sanitized libgfortran.so.5 I get gfortran gfbug142.f ldd ./a.out ........ libgfortran.so.5 => /home/vitti/gcc-150221-undefined/x86_64-pc-linux-gnu/libgfortran/.libs/libgfortran.so.5 (0x000014a739133000) libubsan.so.1 => /home/vitti/local/gcc-150221-undefined/lib/../lib64/libubsan.so.1 (0x000014a738293000) libstdc++.so.6 => /home/vitti/local/gcc-150221-undefined/lib/../lib64/libstdc++.so.6 ................ ./a.out ../../../gcc-150221/libgfortran/io/write.c:835:7: runtime error: negation of 0x80000000000000000000000000000000 cannot be represented in type '__int128'; cast to an unsigned type to negate this value to itself ../../../gcc-150221/libgfortran/runtime/string.c:199:11: runtime error: negation of 0x80000000000000000000000000000000 cannot be represented in type '__int128'; cast to an unsigned type to negate this value to itself 80000000000000000000000000000000 ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libfortran/81986] sanitizer detects negation of large number in string.c [not found] <bug-81986-4@http.gcc.gnu.org/bugzilla/> 2021-02-27 9:21 ` [Bug libfortran/81986] sanitizer detects negation of large number in string.c zeccav at gmail dot com @ 2021-02-28 11:04 ` dominiq at lps dot ens.fr 2021-03-03 7:08 ` cvs-commit at gcc dot gnu.org ` (3 subsequent siblings) 5 siblings, 0 replies; 6+ messages in thread From: dominiq at lps dot ens.fr @ 2021-02-28 11:04 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81986 Dominique d'Humieres <dominiq at lps dot ens.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- Ever confirmed|0 |1 Last reconfirmed| |2021-02-28 Status|UNCONFIRMED |NEW --- Comment #5 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- Confirmed. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libfortran/81986] sanitizer detects negation of large number in string.c [not found] <bug-81986-4@http.gcc.gnu.org/bugzilla/> 2021-02-27 9:21 ` [Bug libfortran/81986] sanitizer detects negation of large number in string.c zeccav at gmail dot com 2021-02-28 11:04 ` dominiq at lps dot ens.fr @ 2021-03-03 7:08 ` cvs-commit at gcc dot gnu.org 2021-03-03 11:03 ` dominiq at lps dot ens.fr ` (2 subsequent siblings) 5 siblings, 0 replies; 6+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2021-03-03 7:08 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81986 --- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Tobias Burnus <burnus@gcc.gnu.org>: https://gcc.gnu.org/g:006693a59f7cd1310aed53a2816020bedf1fb742 commit r11-7470-g006693a59f7cd1310aed53a2816020bedf1fb742 Author: Tobias Burnus <tobias@codesourcery.com> Date: Wed Mar 3 08:05:45 2021 +0100 libgfortran: Fix negation for largest integer [PR81986] libgfortran/ChangeLog: 2021-03-01 Vittorio Zecca <zeccav@gmail.com> Tobias Burnus <tobias@codesourcery.com> PR libfortran/81986 * runtime/string.c (gfc_itoa): Cast to unsigned before negating. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libfortran/81986] sanitizer detects negation of large number in string.c [not found] <bug-81986-4@http.gcc.gnu.org/bugzilla/> ` (2 preceding siblings ...) 2021-03-03 7:08 ` cvs-commit at gcc dot gnu.org @ 2021-03-03 11:03 ` dominiq at lps dot ens.fr 2021-12-25 13:04 ` fxcoudert at gcc dot gnu.org 2021-12-25 14:57 ` fxcoudert at gcc dot gnu.org 5 siblings, 0 replies; 6+ messages in thread From: dominiq at lps dot ens.fr @ 2021-03-03 11:03 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81986 --- Comment #7 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- r11-7470 fixes the first runtime error, but I still see ../../../work/libgfortran/io/write.c:835:7: runtime error: negation of 0x80000000000000000000000000000000 cannot be represented in type '__int128'; cast to an unsigned type to negate this value to itself This is in sign = calculate_sign (dtp, n < 0); if (n < 0) n = -n; nsign = sign == S_NONE ? 0 : 1; ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libfortran/81986] sanitizer detects negation of large number in string.c [not found] <bug-81986-4@http.gcc.gnu.org/bugzilla/> ` (3 preceding siblings ...) 2021-03-03 11:03 ` dominiq at lps dot ens.fr @ 2021-12-25 13:04 ` fxcoudert at gcc dot gnu.org 2021-12-25 14:57 ` fxcoudert at gcc dot gnu.org 5 siblings, 0 replies; 6+ messages in thread From: fxcoudert at gcc dot gnu.org @ 2021-12-25 13:04 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81986 Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |fxcoudert at gcc dot gnu.org --- Comment #8 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> --- Will be fixed by patch at https://gcc.gnu.org/pipermail/fortran/2021-December/057218.html ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug libfortran/81986] sanitizer detects negation of large number in string.c [not found] <bug-81986-4@http.gcc.gnu.org/bugzilla/> ` (4 preceding siblings ...) 2021-12-25 13:04 ` fxcoudert at gcc dot gnu.org @ 2021-12-25 14:57 ` fxcoudert at gcc dot gnu.org 5 siblings, 0 replies; 6+ messages in thread From: fxcoudert at gcc dot gnu.org @ 2021-12-25 14:57 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81986 Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Target Milestone|--- |12.0 Status|NEW |RESOLVED --- Comment #9 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> --- Fixed. ^ permalink raw reply [flat|nested] 6+ messages in thread
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[not found] <bug-81986-4@http.gcc.gnu.org/bugzilla/>
2021-02-27 9:21 ` [Bug libfortran/81986] sanitizer detects negation of large number in string.c zeccav at gmail dot com
2021-02-28 11:04 ` dominiq at lps dot ens.fr
2021-03-03 7:08 ` cvs-commit at gcc dot gnu.org
2021-03-03 11:03 ` dominiq at lps dot ens.fr
2021-12-25 13:04 ` fxcoudert at gcc dot gnu.org
2021-12-25 14:57 ` fxcoudert at gcc dot gnu.org
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