[libc][sys/resource] wrong function signature for setrlimit in generated sys/resource.h

[nickdesaulniers]

Building clang itself against llvm-libc fails with:

llvm/lib/Support/Unix/Program.inc:161:3: error: no matching function for call to 'setrlimit'
  161 |   setrlimit(RLIMIT_RSS, &r);
      |   ^~~~~~~~~
/usr/include/sys/resource.h:23:5: note: candidate function not viable: requires 1 argument, but 2 were provided
   23 | int setrlimit(const struct rlimit) __NOEXCEPT;
      |     ^         ~~~~~~~~~~~~~~~~~~~

This is because the generated header we produce has the function declaration of:

int setrlimit(const struct rlimit) __NOEXCEPT;

but man 3 setrlimit says it should be

int setrlimit(int resource, const struct rlimit *rlp);

libc/include/sys/resource.yaml should be fixed, a la 6045146 (cc @alexprabhat99)

[llvmbot]

@llvm/issue-subscribers-libc

Author: Nick Desaulniers (nickdesaulniers)

Building clang itself against llvm-libc fails with:

llvm/lib/Support/Unix/Program.inc:161:3: error: no matching function for call to 'setrlimit'
  161 |   setrlimit(RLIMIT_RSS, &r);
      |   ^~~~~~~~~
/usr/include/sys/resource.h:23:5: note: candidate function not viable: requires 1 argument, but 2 were provided
   23 | int setrlimit(const struct rlimit) __NOEXCEPT;
      |     ^         ~~~~~~~~~~~~~~~~~~~

This is because the generated header we produce has the function declaration of:

int setrlimit(const struct rlimit) __NOEXCEPT;

but man 3 setrlimit says it should be

int setrlimit(int resource, const struct rlimit *rlp);

libc/include/sys/resource.yaml should be fixed, a la 6045146 (cc @alexprabhat99)

[llvmbot]

Hi!

This issue may be a good introductory issue for people new to working on LLVM. If you would like to work on this issue, your first steps are:

1. Check that no other contributor has already been assigned to this issue. If you believe that no one is actually working on it despite an assignment, ping the person. After one week without a response, the assignee may be changed.
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3. Fix the issue locally.
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5. Create a Git commit.
6. Run git clang-format HEAD~1 to format your changes.
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If you have any further questions about this issue, don't hesitate to ask via a comment in the thread below.

[llvmbot]

@llvm/issue-subscribers-good-first-issue

Author: Nick Desaulniers (nickdesaulniers)

Building clang itself against llvm-libc fails with:

llvm/lib/Support/Unix/Program.inc:161:3: error: no matching function for call to 'setrlimit'
  161 |   setrlimit(RLIMIT_RSS, &r);
      |   ^~~~~~~~~
/usr/include/sys/resource.h:23:5: note: candidate function not viable: requires 1 argument, but 2 were provided
   23 | int setrlimit(const struct rlimit) __NOEXCEPT;
      |     ^         ~~~~~~~~~~~~~~~~~~~

This is because the generated header we produce has the function declaration of:

int setrlimit(const struct rlimit) __NOEXCEPT;

but man 3 setrlimit says it should be

int setrlimit(int resource, const struct rlimit *rlp);

libc/include/sys/resource.yaml should be fixed, a la 6045146 (cc @alexprabhat99)

[nickdesaulniers]

Looks like our getrlimit is wrong, too.