cd754af55f
Summary: Some attributes have gnu extensions that share names with clang attributes. If these imply the same thing, we can specially declare this to be an alternate but equivalent spelling. This patch enables this for `no_sanitize` and provides the infrastructure for more to be added if needed. Discussions welcome on whether or not we want to bind ourselves to GNU behavior, since theoretically it's possible for GNU to silently change the semantics away from our implementation, but I'm not an expert. Fixes: https://github.com/llvm/llvm-project/issues/125760
41 lines
1.9 KiB
C++
41 lines
1.9 KiB
C++
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s
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// RUN: not %clang_cc1 -std=c++11 -ast-dump %s | FileCheck --check-prefix=DUMP %s
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// RUN: not %clang_cc1 -std=c++11 -ast-print %s | FileCheck --check-prefix=PRINT %s
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int f1() __attribute__((no_sanitize)); // expected-error{{'no_sanitize' attribute takes at least 1 argument}}
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int f2() __attribute__((no_sanitize(1))); // expected-error{{expected string literal as argument of 'no_sanitize' attribute}}
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__attribute__((no_sanitize("all"))) int global; // expected-warning{{'no_sanitize' attribute argument 'all' not supported on a global variable}}
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__attribute__((no_sanitize("unknown"))) int global2; // expected-warning{{unknown sanitizer 'unknown' ignored}}
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// DUMP-LABEL: FunctionDecl {{.*}} f3
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// DUMP: NoSanitizeAttr {{.*}} address
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// PRINT: int f3() __attribute__((no_sanitize("address")))
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int f3() __attribute__((no_sanitize("address")));
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// DUMP-LABEL: FunctionDecl {{.*}} f4
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// DUMP: NoSanitizeAttr {{.*}} thread
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// PRINT: {{\[\[}}clang::no_sanitize("thread")]] int f4()
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[[clang::no_sanitize("thread")]] int f4();
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// DUMP-LABEL: FunctionDecl {{.*}} f4
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// DUMP: NoSanitizeAttr {{.*}} hwaddress
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// PRINT: {{\[\[}}gnu::no_sanitize("hwaddress")]] int f4()
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[[gnu::no_sanitize("hwaddress")]] int f4();
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// DUMP-LABEL: FunctionDecl {{.*}} f5
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// DUMP: NoSanitizeAttr {{.*}} address thread hwaddress
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// PRINT: int f5() __attribute__((no_sanitize("address", "thread", "hwaddress")))
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int f5() __attribute__((no_sanitize("address", "thread", "hwaddress")));
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// DUMP-LABEL: FunctionDecl {{.*}} f6
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// DUMP: NoSanitizeAttr {{.*}} unknown
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// PRINT: int f6() __attribute__((no_sanitize("unknown")))
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int f6() __attribute__((no_sanitize("unknown"))); // expected-warning{{unknown sanitizer 'unknown' ignored}}
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// DUMP-LABEL: FunctionDecl {{.*}} f7
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// DUMP: NoSanitizeAttr {{.*}} memtag
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// PRINT: {{\[\[}}clang::no_sanitize("memtag")]] int f7()
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[[clang::no_sanitize("memtag")]] int f7();
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