d238b60285
The diagnostic texts for warning on attributes that don't appear on the initial declaration is generally useful. We'd like to re-use it in D106030, but first let's combine two that already are very similar so we may re-use it a third time in that commit. Also, fix a few places that were using notePreviousDefinition to point to declarations, to instead use diag::note_previous_declaration. Reviewed By: aaron.ballman Differential Revision: https://reviews.llvm.org/D107613
28 lines
1.4 KiB
C
28 lines
1.4 KiB
C
// RUN: %clang_cc1 -verify -fsyntax-only %s
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extern int f0() __attribute__((weak));
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extern int g0 __attribute__((weak));
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extern int g1 __attribute__((weak_import));
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int f2() __attribute__((weak));
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int g2 __attribute__((weak));
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int g3 __attribute__((weak_import)); // expected-warning {{'weak_import' attribute cannot be specified on a definition}}
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int __attribute__((weak_import)) g4(void);
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void __attribute__((weak_import)) g5(void) {
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}
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struct __attribute__((weak)) s0 {}; // expected-warning {{'weak' attribute only applies to variables, functions, and classes}}
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struct __attribute__((weak_import)) s1 {}; // expected-warning {{'weak_import' attribute only applies to variables and functions}}
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static int f() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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static int x __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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// rdar://9538608
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int C; // expected-note {{previous declaration is here}}
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extern int C __attribute__((weak_import)); // expected-warning {{an already-declared variable is made a weak_import declaration}}
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static int pr14946_x;
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extern int pr14946_x __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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static void pr14946_f();
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void pr14946_f() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
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