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Programs with __attribute__((annotate)) fail to link under AddressSanitizer #279

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ramosian-glider opened this issue Aug 31, 2015 · 4 comments
Closed

Programs with __attribute__((annotate)) fail to link under AddressSanitizer #279

ramosian-glider opened this issue Aug 31, 2015 · 4 comments
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Priority-Medium ProjectAddressSanitizer Status-Fixed Type-Defect

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@ramosian-glider
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Originally reported on Google Code with ID 279

$ cat t.cc
#include <unistd.h>

class A {
 public:
  __attribute__((annotate("aaa")))
  int GetValue();
 private:
  int value;
};

int A::GetValue() {
  return value;
}

int main() {
  A a;
  return 0;
} 

$ clang++ t.cc -o t -std=c++11 -o t -fsanitize=address
/tmp/t-89eeb2.o:(.data+0x0): undefined reference to `.str'
/tmp/t-89eeb2.o:(.data+0x30): undefined reference to `.str1'
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Reported by ramosian.glider on 2014-03-20 08:20:08
@ramosian-glider
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Reduced testcase:

$ cat t.cc 
__attribute__((annotate("aaa")))
int getvalue() { return 1; }

int main() {
  return getvalue();
}

Reported by ramosian.glider on 2014-03-20 08:25:08

@ramosian-glider
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$ build/Release+Asserts/bin/clang++ t.cc  -std=c++11 -S -emit-llvm 
$ cat t.ll
...
@.str = private unnamed_addr constant [4 x i8] c"aaa\00", section "llvm.metadata"
@.str1 = private unnamed_addr constant [5 x i8] c"t.cc\00", section "llvm.metadata"
@llvm.global.annotations = appending global [1 x { i8*, i8*, i8*, i32 }] [{ i8*, i8*,
i8*, i32 } { i8* bitcast (i32 ()* @_Z8getvaluev to i8*), i8* getelementptr inbounds
([4 x i8]* @.str, i32 0, i32 0), i8* getelementptr inbounds ([5 x i8]* @.str1, i32
0, i32 0), i32 2 }], section "llvm.metadata"
...

Reported by ramosian.glider on 2014-03-20 08:26:08

@ramosian-glider
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Fixed in LLVM r204331.

Reported by ramosian.glider on 2014-03-20 10:55:36

  • Status changed: Fixed

@ramosian-glider
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Adding Project:AddressSanitizer as part of GitHub migration.

Reported by ramosian.glider on 2015-07-30 09:14:07

  • Labels added: ProjectAddressSanitizer

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Labels
Priority-Medium ProjectAddressSanitizer Status-Fixed Type-Defect
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