clang/test/Driver/rtti-options.cpp

   1 // Check that we emit warnings/errors for different combinations of
   2 // exceptions, rtti, and vptr sanitizer flags for generic (unknown) x86 linux,
   3 // and for PS4 when its behaviour differs from the generic x86-linux.
   4 // No warnings/errors should be emitted for unknown, except if combining
   5 // the vptr sanitizer with -fno-rtti
   6
   7 // Special cases: -fcxx-exceptions in C code should warn about unused arguments
   8 // We should also not have any rtti-related arguments
   9 // RUN: %clang -x c -### -target x86_64-unknown-unknown -c -fcxx-exceptions %s 2>&1 | FileCheck -check-prefix=CHECK-UNUSED -check-prefix=CHECK-RTTI %s
  10
  11 // Make sure we keep the last -frtti/-fno-rtti argument
  12 // RUN: %clang -### -c -fno-rtti -frtti %s 2>&1 | FileCheck -check-prefix=CHECK-RTTI %s
  13 // RUN: %clang -### -c -frtti -fno-rtti %s 2>&1 | FileCheck -check-prefix=CHECK-NO-RTTI %s
  14
  15 // -fsanitize=vptr
  16 // Make sure we only error/warn once, when trying to enable vptr and
  17 // undefined and have -fno-rtti
  18 // RUN: %clang -### -c -target x86_64-unknown-linux -fsanitize=undefined -fsanitize=vptr -fno-rtti %s 2>&1 | FileCheck -check-prefix=CHECK-SAN-ERROR -check-prefix=CHECK-OK %s
  19 // RUN: %clang -### -c -target x86_64-unknown-linux -fsanitize=vptr %s 2>&1 | FileCheck -check-prefix=CHECK-OK %s
  20 // RUN: %clang -### -c -target x86_64-unknown-linux -fsanitize=vptr -frtti %s 2>&1 | FileCheck -check-prefix=CHECK-OK %s
  21 // RUN: %clang -### -c -target x86_64-unknown-linux -fsanitize=vptr -fno-rtti %s 2>&1 | FileCheck -check-prefix=CHECK-SAN-ERROR %s
  22 // RUN: %clang -### -c -target x86_64-unknown-linux -fsanitize=undefined %s 2>&1 | FileCheck -check-prefix=CHECK-OK %s
  23 // RUN: %clang -### -c -target x86_64-unknown-linux -fsanitize=undefined -frtti %s 2>&1 | FileCheck -check-prefix=CHECK-OK %s
  24 // RUN: %clang -### -c -target x86_64-scei-ps4 -fsanitize=vptr %s 2>&1 | FileCheck -check-prefix=CHECK-SAN-WARN %s
  25 // RUN: %clang -### -c -target x86_64-sie-ps5 -fsanitize=vptr %s 2>&1 | FileCheck -check-prefix=CHECK-SAN-WARN %s
  26
  27 // Exceptions + no/default rtti
  28 // RUN: %clang -### -c -target x86_64-unknown-unknown -fcxx-exceptions -fno-rtti %s 2>&1 | FileCheck -check-prefix=CHECK-OK %s
  29 // RUN: %clang -### -c -target x86_64-unknown-unknown -fcxx-exceptions %s 2>&1 | FileCheck -check-prefix=CHECK-OK %s
  30 // In C++, -fexceptions implies -fcxx-exceptions
  31 // RUN: %clang -x c++ -### -c -target x86_64-unknown-unknown -fexceptions -fno-rtti %s 2>&1 | FileCheck -check-prefix=CHECK-OK %s
  32 // RUN: %clang -x c++ -### -c -target x86_64-unknown-unknown -fexceptions %s 2>&1 | FileCheck -check-prefix=CHECK-OK %s
  33
  34 // -frtti + exceptions
  35 // RUN: %clang -### -c -target x86_64-unknown-unknown -fcxx-exceptions -frtti %s 2>&1 | FileCheck -check-prefix=CHECK-OK %s
  36
  37 // -f{no-,}rtti/default
  38 // RUN: %clang -### -c -target x86_64-scei-ps4 %s 2>&1 | FileCheck -check-prefix=CHECK-NO-RTTI %s
  39 // RUN: %clang -### -c -target x86_64-sie-ps5 %s 2>&1 | FileCheck -check-prefix=CHECK-NO-RTTI %s
  40 // RUN: %clang -### -c -target x86_64-unknown-unknown -frtti %s 2>&1 | FileCheck -check-prefix=CHECK-RTTI %s
  41 // RUN: %clang -### -c -target x86_64-unknown-unknown -fno-rtti %s 2>&1 | FileCheck -check-prefix=CHECK-NO-RTTI %s
  42 // RUN: %clang -### -c -target x86_64-unknown-unknown %s 2>&1 | FileCheck -check-prefix=CHECK-RTTI %s
  43
  44 // CHECK-UNUSED: warning: argument unused during compilation: '-fcxx-exceptions'
  45 // CHECK-SAN-WARN: implicitly disabling vptr sanitizer because rtti wasn't enabled
  46 // CHECK-SAN-ERROR: invalid argument '-fsanitize=vptr' not allowed with '-fno-rtti'
  47 // CHECK-RTTI-NOT: "-fno-rtti"
  48 // CHECK-NO-RTTI: "-fno-rtti"
  49
  50 // CHECK-OK-NOT: {{warning:|error:}}