https://llvm.org/bugs/show_bug.cgi?id=24277
Bug ID: 24277
Summary: Clang could emit a better diagnostic when an
apostrophe is used as digit separator in -std=c++11
Product: clang
Version: unspecified
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: C++14
Assignee: unassignedclangb...@nondot.org
Reporter: dav...@freebsd.org
CC: llvmbugs@cs.uiuc.edu
Classification: Unclassified
The following is completely fine in C++14:
constexpr auto blah = 10'000'000;
but it's not in C++11/03/98:
% ./clang++ constexpr.cpp -std=c++11
constexpr.cpp:1:25: error: expected ';' after top level declarator
constexpr auto blah = 10'000'000;
^
;
1 error generated.
Clang could probably emit (if possible) a slightly better diagnostic, e.g.
"using apostrophe as digit separator is only allowed in C++14" or "apostrophe
as digit separator is a C++14 feature".
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