gcc48: asan (address sanitizer) is broken

[akimd (Akim Demaille)]

address sanitizer is broken with 4.8, probably because its library is not installed. It works with 4.9:

$ cat foo.cc
int main() {}
$ gcc-mp-4.9 -fsanitize=address foo.cc
$ g++-mp-4.8 -fsanitize=address foo.cc
ld: library not found for -lasan
collect2: error: ld returned 1 exit status

(C vs. C++ is irrelevant)

Note that neither thread sanitizers work properly:

$ gcc-mp-4.9 -fsanitize=thread foo.cc
Undefined symbols for architecture x86_64:
  "___tsan_init", referenced from:
      __GLOBAL__sub_I_00099_0_foo.cc in ccs9M1Tr.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
$ gcc-mp-4.8 -fsanitize=thread foo.cc
Undefined symbols for architecture x86_64:
  "___tsan_init", referenced from:
      __GLOBAL__sub_I_00099_0_foo.cc in ccx7nFfX.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status

[cooljeanius (Eric Gallager)]

Cc Me!

[anddam (Andrea D'Amore)]

Cc Me!

[anddam (Andrea D'Amore)]

Port gcc48 got at least one update since the ticket was opened.

At the moment I cannot reproduce the issue, please check your system and confirm you still can.

[larryv (Lawrence Velázquez)]

Cc Me!

[akimd (Akim Demaille)]

No change.

$ cat > foo.cc
int main() {}
$ gcc-mp-4.9 -fsanitize=address foo.cc
$ gcc-mp-4.8 -fsanitize=address foo.cc
ld: library not found for -lasan
collect2: error: ld returned 1 exit status
$ gcc-mp-4.8 --version
gcc-mp-4.8 (MacPorts gcc48 4.8.3_1) 4.8.3
Copyright (C) 2013 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[larryv (Lawrence Velázquez)]

I can reproduce as well.

[larryv (Lawrence Velázquez)]

Replying to akim.demaille@…:

Note that neither thread sanitizers work properly:

Could you open a new ticket for this? I’d like to track that issue separately.

[akimd (Akim Demaille)]

Replying to larryv@…:

Could you open a new ticket for this? I’d like to track that issue separately.

Done: #45811.

[Veence (Vincent)]

libasan is not installed by gcc-4.x (actually, it's a link) but by libgcc that seems to fail to create (or install) it properly (it is missing).