[krita] [Bug 437890] New: kseexpr FTBFS with GCC 11

[Christophe Giboudeaux]

https://bugs.kde.org/show_bug.cgi?id=437890

            Bug ID: 437890
           Summary: kseexpr FTBFS with GCC 11
           Product: krita
           Version: unspecified
          Platform: Other
                OS: Other
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: * Unknown
          Assignee: krita-bugs-n...@kde.org
          Reporter: christo...@krop.fr
  Target Milestone: ---

We seeing a couple build failures with GCC 11:

#1
/home/abuild/rpmbuild/BUILD/kseexpr-4.0.1.0/src/KSeExpr/Utils.cpp:13:52: error:
'strlen' is not a member of 'std'; did you mean 'mbrlen'?

This file needs a cstring include

#2
[   43s] /home/abuild/rpmbuild/BUILD/kseexpr-4.0.1.0/src/KSeExpr/Utils.cpp: In
function 'double_t KSeExpr::Utils::atof(const char*)':
[   43s]
/home/abuild/rpmbuild/BUILD/kseexpr-4.0.1.0/src/KSeExpr/Utils.cpp:14:10:
warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
[   43s]    14 |     auto [p, ec] = std::from_chars(num, num +
std::strlen(num), v);
[   43s]       |          ^
[   43s] /home/abuild/rpmbuild/BUILD/kseexpr-4.0.1.0/src/KSeExpr/Utils.cpp: In
function 'double_t KSeExpr::Utils::atof(const string&)':
[   43s]
/home/abuild/rpmbuild/BUILD/kseexpr-4.0.1.0/src/KSeExpr/Utils.cpp:25:10:
warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
[   43s]    25 |     auto [p, ec] = std::from_chars(val.data(), val.data() +
val.size(), v);
[   43s]       |          ^
[   43s]
/home/abuild/rpmbuild/BUILD/kseexpr-4.0.1.0/src/KSeExpr/Utils.cpp:25:36: error:
'val' was not declared in this scope
[   43s]    25 |     auto [p, ec] = std::from_chars(val.data(), val.data() +
val.size(), v);
[   43s]       |                                    ^~~

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