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0865ecc515
This is take two of #70976. This iteration of the patch makes sure that custom diagnostics without any warning group don't get promoted by `-Werror` or `-Wfatal-errors`. This implements parts of the extension proposed in https://discourse.llvm.org/t/exposing-the-diagnostic-engine-to-c/73092/7. Specifically, this makes it possible to specify a diagnostic group in an optional third argument.
64 lines
2.7 KiB
C++
64 lines
2.7 KiB
C++
// RUN: %clang_cc1 %s -verify=expected,wall -fno-builtin -Wno-pedantic -Werror=comment -Wno-error=abi -Wfatal-errors=assume -Wno-fatal-errors=assume -Wno-format
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// RUN: %clang_cc1 %s -verify=expected,wno-all,pedantic,format -fno-builtin -Wno-all -Werror=comment -Wno-error=abi -Werror=assume -Wformat
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#define diagnose_if(...) __attribute__((diagnose_if(__VA_ARGS__)))
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#ifndef EMTY_WARNING_GROUP
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void bougus_warning() diagnose_if(true, "oh no", "warning", "bogus warning") {} // expected-error {{unknown warning group 'bogus warning'}}
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void show_in_system_header() diagnose_if(true, "oh no", "warning", "assume", "Banane") {} // expected-error {{'diagnose_if' attribute takes no more than 4 arguments}}
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#endif // EMTY_WARNING_GROUP
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template <bool b>
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void diagnose_if_wcomma() diagnose_if(b, "oh no", "warning", "comma") {}
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template <bool b>
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void diagnose_if_wcomment() diagnose_if(b, "oh no", "warning", "comment") {}
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void empty_warning_group() diagnose_if(true, "oh no", "warning", "") {} // expected-error {{unknown warning group ''}}
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void empty_warning_group_error() diagnose_if(true, "oh no", "error", "") {} // expected-error {{unknown warning group ''}}
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void diagnose_if_wabi_default_error() diagnose_if(true, "ABI stuff", "error", "abi") {}
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void diagnose_assume() diagnose_if(true, "Assume diagnostic", "warning", "assume") {}
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void Wall() diagnose_if(true, "oh no", "warning", "all") {}
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void Wpedantic() diagnose_if(true, "oh no", "warning", "pedantic") {}
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void Wformat_extra_args() diagnose_if(true, "oh no", "warning", "format-extra-args") {}
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void call() {
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diagnose_if_wcomma<true>(); // expected-warning {{oh no}}
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diagnose_if_wcomma<false>();
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diagnose_if_wcomment<true>(); // expected-error {{oh no}}
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diagnose_if_wcomment<false>();
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wcomma"
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diagnose_if_wcomma<true>();
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diagnose_if_wcomment<true>(); // expected-error {{oh no}}
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#pragma clang diagnostic pop
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wcomment"
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diagnose_if_wcomma<true>(); // expected-warning {{oh no}}
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diagnose_if_wcomment<true>();
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#pragma clang diagnostic pop
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diagnose_if_wcomma<true>(); // expected-warning {{oh no}}
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diagnose_if_wcomment<true>(); // expected-error {{oh no}}
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diagnose_if_wabi_default_error(); // expected-warning {{ABI stuff}}
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diagnose_assume(); // expected-error {{Assume diagnostic}}
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// Make sure that the -Wassume diagnostic isn't fatal
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diagnose_if_wabi_default_error(); // expected-warning {{ABI stuff}}
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Wall(); // wall-warning {{oh no}}
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Wpedantic(); // pedantic-warning {{oh no}}
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Wformat_extra_args(); // format-warning {{oh no}}
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wformat"
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Wformat_extra_args();
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#pragma clang diagnostic pop
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}
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