Not being in ISO C(99, I'm less sure about 89) doesn't make it a GNUism. At best you're disagreeing with GCC over its default standards version.
Clang only changed the default in 2022, for example. https://reviews.llvm.org/D129881
Not being in ISO C(99, I'm less sure about 89) doesn't make it a GNUism. At best you're disagreeing with GCC over its default standards version.
Clang only changed the default in 2022, for example. https://reviews.llvm.org/D129881