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libstdc++: Add test for illegal pointer arithmetic in format [PR111102]

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libstdc++-v3/ChangeLog:

	PR libstdc++/111102
	* testsuite/std/format/string.cc: Check wide character format
	strings with out-of-range widths.
This commit is contained in:
Paul Dreik 2023-08-24 11:43:43 +01:00 committed by Jonathan Wakely
parent dd4bdb9eea
commit 7564fe9865
1 changed files with 15 additions and 0 deletions
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15
libstdc++-v3/testsuite/std/format/string.cc
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@ -16,6 +16,18 @@ is_format_string_for(const char* str, Args&&... args)
}
}
template<typename... Args>
bool
is_format_string_for(const wchar_t* str, Args&&... args)
{
try {
(void) std::vformat(str, std::make_wformat_args(args...));
return true;
} catch (const std::format_error&) {
return false;
}
}
void
test_no_args()
{
@ -124,8 +136,11 @@ test_format_spec()
// Maximum integer value supported for widths and precisions is USHRT_MAX.
VERIFY( is_format_string_for("{:65535}", 1) );
VERIFY( is_format_string_for(L"{:65535}", 1) );
VERIFY( ! is_format_string_for("{:65536}", 1) );
VERIFY( ! is_format_string_for(L"{:65536}", 1) );
VERIFY( ! is_format_string_for("{:9999999}", 1) );
VERIFY( ! is_format_string_for(L"{:9999999}", 1) );
}
void