https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87413
Martin Sebor <msebor at gcc dot gnu.org> changed:
What |Removed |Added
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Keywords| |diagnostic
CC| |msebor at gcc dot gnu.org
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=80265
--- Comment #3 from Martin Sebor <msebor at gcc dot gnu.org> ---
As Jonathan already mentioned, treating __builtin_strlen("string") (among other
string function calls) as a constant integer expression is a useful extension
accepted by several C++ compilers, including Clang and ICC 18 (see also
pr80265).
G++ accepts the test case in C++ 11 mode and later, but rejects it with an
error in C++ 98 mode. Since C++ requires array bounds to be constant
expressions and calls to functions are not such expressions, it might be worth
issuing a pedantic warning on the strlen case in C++ 11 mode and later.
