public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug tree-optimization/80776] -Wformat-overflow false positive for %d on integer bounded by __builtin_unreachable [not found] <bug-80776-4@http.gcc.gnu.org/bugzilla/> @ 2023-06-21 4:28 ` pinskia at gcc dot gnu.org 2023-06-21 4:28 ` pinskia at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-06-21 4:28 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80776 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |13.0 --- Comment #8 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Martin Sebor from comment #7) > Reconfirming that test case in comment #2 still triggers the warning in GCC > 10. The dump shows that the warning thinks the fifth directive (%02d) > generates between 2 and 10 bytes of output. The symptoms feel similar to > pr94021 but I haven't looked into whether they underlying root causes are > related. That testcase looks to be fixed in GCC 13: /app/example.cpp:13: __builtin_sprintf: objsize = 15, fmtstr = "%04d%02d%02d%02d%02d%02d" Directive 1 at offset 0: "%04d" Result: 4, 4, 4, 4 (4, 4, 4, 4) Directive 2 at offset 4: "%02d" Result: 2, 2, 2, 2 (6, 6, 6, 6) Directive 3 at offset 8: "%02d" Result: 2, 2, 2, 2 (8, 8, 8, 8) Directive 4 at offset 12: "%02d" Result: 2, 2, 2, 2 (10, 10, 10, 10) Directive 5 at offset 16: "%02d" Result: 2, 2, 2, 2 (12, 12, 12, 12) Directive 6 at offset 20: "%02d" Result: 2, 2, 2, 2 (14, 14, 14, 14) Directive 7 at offset 24: "", length = 1 Substituting 14 for return value. GCC 13: # RANGE [irange] int [-999, 9999] intD.6 a_14(D) = aD.2739; # RANGE [irange] int [1, 12] NONZERO 0xf intD.6 b_15(D) = bD.2740; # RANGE [irange] int [1, 31] NONZERO 0x1f intD.6 c_16(D) = cD.2741; # RANGE [irange] int [0, 23] NONZERO 0x1f intD.6 d_17(D) = dD.2742; # RANGE [irange] int [0, 59] NONZERO 0x3f intD.6 e_18(D) = eD.2743; # RANGE [irange] int [0, 60] NONZERO 0x3f intD.6 f_19(D) = fD.2744; GCC 12: # RANGE [-999, 9999] intD.6 a_14(D) = aD.1979; # RANGE [1, 12] NONZERO 15 intD.6 b_15(D) = bD.1980; # RANGE [1, 31] NONZERO 31 intD.6 c_16(D) = cD.1981; # RANGE [0, 23] NONZERO 31 intD.6 d_17(D) = dD.1982; # RANGE [0, 2147483647] NONZERO 2147483647 intD.6 e_18(D) = eD.1983; # RANGE [0, 2147483647] NONZERO 2147483647 intD.6 f_19(D) = fD.1984; So yes this has been fixed for GCC 13. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/80776] -Wformat-overflow false positive for %d on integer bounded by __builtin_unreachable [not found] <bug-80776-4@http.gcc.gnu.org/bugzilla/> 2023-06-21 4:28 ` [Bug tree-optimization/80776] -Wformat-overflow false positive for %d on integer bounded by __builtin_unreachable pinskia at gcc dot gnu.org @ 2023-06-21 4:28 ` pinskia at gcc dot gnu.org 2023-10-25 3:35 ` pinskia at gcc dot gnu.org 2023-10-25 3:36 ` pinskia at gcc dot gnu.org 3 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-06-21 4:28 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80776 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution|--- |FIXED --- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> --- . ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/80776] -Wformat-overflow false positive for %d on integer bounded by __builtin_unreachable [not found] <bug-80776-4@http.gcc.gnu.org/bugzilla/> 2023-06-21 4:28 ` [Bug tree-optimization/80776] -Wformat-overflow false positive for %d on integer bounded by __builtin_unreachable pinskia at gcc dot gnu.org 2023-06-21 4:28 ` pinskia at gcc dot gnu.org @ 2023-10-25 3:35 ` pinskia at gcc dot gnu.org 2023-10-25 3:36 ` pinskia at gcc dot gnu.org 3 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-10-25 3:35 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80776 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|FIXED |--- Status|RESOLVED |NEW --- Comment #10 from Andrew Pinski <pinskia at gcc dot gnu.org> --- I am going to reopen this because the VRP issue has not been solved. You can reproduce the same issue adding -fno-tree-reassoc to the testcase. It just happens reassociating combined with the find_duplicates part of the PRE pass allows it to be optimized. ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/80776] -Wformat-overflow false positive for %d on integer bounded by __builtin_unreachable [not found] <bug-80776-4@http.gcc.gnu.org/bugzilla/> ` (2 preceding siblings ...) 2023-10-25 3:35 ` pinskia at gcc dot gnu.org @ 2023-10-25 3:36 ` pinskia at gcc dot gnu.org 3 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu.org @ 2023-10-25 3:36 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80776 Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|13.0 |--- ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-10-25 3:36 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <bug-80776-4@http.gcc.gnu.org/bugzilla/>
2023-06-21 4:28 ` [Bug tree-optimization/80776] -Wformat-overflow false positive for %d on integer bounded by __builtin_unreachable pinskia at gcc dot gnu.org
2023-06-21 4:28 ` pinskia at gcc dot gnu.org
2023-10-25 3:35 ` pinskia at gcc dot gnu.org
2023-10-25 3:36 ` pinskia at gcc dot gnu.org
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).