67 lines · cpp
1// Test the -cc1 flag. There's no -fno-... option in -cc1 invocations,2// just the positive option.3 4// RUN: %clang_cc1 -std=c++20 -Wunsafe-buffer-usage -verify=OFF %s5// RUN: %clang_cc1 -std=c++20 -Wunsafe-buffer-usage -verify=ON %s \6// RUN: -fsafe-buffer-usage-suggestions7 8// Test driver flags. Now there's both -f... and -fno-... to worry about.9 10// RUN: %clang -fsyntax-only -std=c++20 -Wunsafe-buffer-usage \11// RUN: -Xclang -verify=OFF %s12// RUN: %clang -fsyntax-only -std=c++20 -Wunsafe-buffer-usage \13// RUN: -fsafe-buffer-usage-suggestions \14// RUN: -Xclang -verify=ON %s15// RUN: %clang -fsyntax-only -std=c++20 -Wunsafe-buffer-usage \16// RUN: -fno-safe-buffer-usage-suggestions \17// RUN: -Xclang -verify=OFF %s18 19// In case of driver flags, last flag takes precedence.20 21// RUN: %clang -fsyntax-only -std=c++20 -Wunsafe-buffer-usage \22// RUN: -fsafe-buffer-usage-suggestions \23// RUN: -fno-safe-buffer-usage-suggestions \24// RUN: -Xclang -verify=OFF %s25// RUN: %clang -fsyntax-only -std=c++20 -Wunsafe-buffer-usage \26// RUN: -fno-safe-buffer-usage-suggestions \27// RUN: -fsafe-buffer-usage-suggestions \28// RUN: -Xclang -verify=ON %s29 30// Passing through -Xclang.31 32// RUN: %clang -fsyntax-only -std=c++20 -Wunsafe-buffer-usage \33// RUN: -Xclang -fsafe-buffer-usage-suggestions \34// RUN: -Xclang -verify=ON %s35 36// -Xclang flags take precedence over driver flags.37 38// RUN: %clang -fsyntax-only -std=c++20 -Wunsafe-buffer-usage \39// RUN: -Xclang -fsafe-buffer-usage-suggestions \40// RUN: -fno-safe-buffer-usage-suggestions \41// RUN: -Xclang -verify=ON %s42// RUN: %clang -fsyntax-only -std=c++20 -Wunsafe-buffer-usage \43// RUN: -fno-safe-buffer-usage-suggestions \44// RUN: -Xclang -fsafe-buffer-usage-suggestions \45// RUN: -Xclang -verify=ON %s46 47[[clang::unsafe_buffer_usage]] void bar(int *);48 49void foo(int *x) { // \50 // ON-warning{{'x' is an unsafe pointer used for buffer access}}51 // FIXME: Better "OFF" warning?52 x[5] = 10; // \53 // ON-note {{used in buffer access here}} \54 // OFF-warning{{unsafe buffer access}} \55 // OFF-note {{pass -fsafe-buffer-usage-suggestions to receive code hardening suggestions}}56 57 x += 5; // \58 // ON-note {{used in pointer arithmetic here}} \59 // OFF-warning{{unsafe pointer arithmetic}} \60 // OFF-note {{pass -fsafe-buffer-usage-suggestions to receive code hardening suggestions}}61 62 bar(x); // \63 // ON-warning{{function introduces unsafe buffer manipulation}} \64 // OFF-warning{{function introduces unsafe buffer manipulation}} \65 // OFF-note {{pass -fsafe-buffer-usage-suggestions to receive code hardening suggestions}}66}67