Gcc-14 triggers a warning for substitute_esc_chars in
json_spirit_reader_template.h if optimizations are enabled.
../../../source/third_party/jsonspirit/json_spirit_reader_template.h:138:62:
/usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/char_traits.h:427:56: warning: ‘void* __builtin_memcpy(void*, const void*, long unsigned int)’ accessing 9223372036854775808 or more bytes at offsets 0 and 0 may overlap up to 9223372036854775809 bytes at offset -1 [-Wrestrict]
427 | return static_cast<char_type*>(__builtin_memcpy(__s1, __s2, __n));
for with lto enabled
/usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/char_traits.h:427:56: warning: ‘__builtin_memcpy’ specified bound between 9223372036854775808 and 18446744073709551615 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]
427 | return static_cast<char_type*>(__builtin_memcpy(__s1, __s2, __n));
This looks like another incarnation of bugs like:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105329https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100366
Add quirk to avoid the warning
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>
Ralph Sennhauser
9a43c43a33