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Test nondeterministic conversion to format string

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This commit is contained in:
Victor Zverovich
2024-09-28 08:20:24 -07:00
parent cacc3108c5
commit 1c5883bef0
1 changed files with 14 additions and 0 deletions
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14
test/base-test.cc
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@ -868,3 +868,17 @@ TEST(base_test, format_to_custom_container) {
auto c = custom_container(); auto c = custom_container();
fmt::format_to(std::back_inserter(c), ""); fmt::format_to(std::back_inserter(c), "");
} }
struct nondeterministic_format_string {
mutable int i = 0;
FMT_CONSTEXPR operator string_view() const {
return string_view("{}", i++ != 0 ? 2 : 0);
}
};
TEST(base_test, no_repeated_format_string_conversions) {
#if !FMT_GCC_VERSION
char buf[10];
fmt::format_to(buf, nondeterministic_format_string());
#endif
}