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1c2afbae9a
The pattern is quite involved and deserves a specific codegen test. This test would catch the bug in the first attempt of #87130
43 lines
2.0 KiB
C++
43 lines
2.0 KiB
C++
// RUN: %clang_cc1 -triple x86_64-linux -verify -emit-llvm-only -DERR %s
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// RUN: not %clang_cc1 -triple x86_64-linux -emit-llvm-only -fdiagnostics-parseable-fixits -DERR %s 2>&1 | FileCheck %s --check-prefix=FIXIT
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// RUN: %clang_cc1 -triple x86_64-linux -emit-llvm %s -o - | FileCheck %s
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#ifdef ERR
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void *f1_ifunc(void) { return nullptr; }
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void f1(void) __attribute__((alias("f1_ifunc")));
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// expected-error@-1 {{alias must point to a defined variable or function}}
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// expected-note@-2 {{must refer to its mangled name}}
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// expected-note@-3 {{function by that name is mangled as}}
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// FIXIT: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:47}:"alias(\"_Z8f1_ifuncv\")"
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void *f6_resolver_resolver(void) { return 0; }
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void *f6_resolver(void) __attribute__((alias("f6_resolver_resolver")));
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// expected-error@-1 {{alias must point to a defined variable or function}}
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// expected-note@-2 {{must refer to its mangled name}}
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// expected-note@-3 {{function by that name is mangled as}}
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// FIXIT: fix-it:"{{.*}}":{[[@LINE-4]]:40-[[@LINE-4]]:69}:"alias(\"_Z20f6_resolver_resolverv\")"
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void f6(void) __attribute__((alias("f6_resolver")));
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// expected-error@-1 {{alias must point to a defined variable or function}}
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// expected-note@-2 {{must refer to its mangled name}}
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// expected-note@-3 {{function by that name is mangled as}}
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// FIXIT: fix-it:"{{.*}}":{[[@LINE-4]]:30-[[@LINE-4]]:50}:"alias(\"_Z11f6_resolverv\")"
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__attribute__((unused, alias("resolver"), deprecated("hahahaha, isn't C great?")))
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void func();
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// expected-error@-2 {{alias must point to a defined variable or function}}
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// expected-note@-3 {{must refer to its mangled name}}
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#endif
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// CHECK: @_ZN4libc4log2Ed ={{.*}} alias double (double), ptr @log2
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// CHECK: define{{.*}} @log2(
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namespace libc { double log2(double x); }
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extern "C" double log2(double);
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namespace std { using ::log2; }
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using std::log2;
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namespace libc {
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decltype(libc::log2) __log2_impl__ __asm__("log2");
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decltype(libc::log2) log2 [[gnu::alias("log2")]];
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double __log2_impl__(double x) { return x; }
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}
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