[libc++] Define _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER whenever we enable warnings in the test suite
This should make CI consistent on all the compilers we support. Most of
this patch is working around various warnings emitted by GCC in our code
base, which are now being shown when we compile the tests.
After this patch, the whole test suite should be warning free on all
compilers we support and test, except for a few warnings on GCC that
we silence explicitly until we figure out the proper fix for them.
Differential Revision: https://reviews.llvm.org/D120684
NOKEYCHECK=True
GitOrigin-RevId: e39095a32e882185611eaa02509e12cef9083b73
diff --git a/include/string b/include/string
index 7eadde7..1d0b783 100644
--- a/include/string
+++ b/include/string
@@ -2304,7 +2304,7 @@
basic_string<_CharT, _Traits, _Allocator>&
basic_string<_CharT, _Traits, _Allocator>::__assign_no_alias(
const value_type* __s, size_type __n) {
- size_type __cap = __is_short ? __min_cap : __get_long_cap();
+ size_type __cap = __is_short ? static_cast<size_type>(__min_cap) : __get_long_cap();
if (__n < __cap) {
pointer __p = __is_short ? __get_short_pointer() : __get_long_pointer();
__is_short ? __set_short_size(__n) : __set_long_size(__n);