[libc] Added tablegen definition for fileno

[Sh0g0-1758]

This was missed in the previous PR. Updating tablegen definition with this PR.

cc: @nickdesaulniers

[llvmbot]

@llvm/pr-subscribers-libc

Author: Shourya Goel (Sh0g0-1758)

Changes

This was missed in the previous PR. Updating tablegen definition with this PR.

cc: @nickdesaulniers

---

Full diff: https://github.com/llvm/llvm-project/pull/85682.diff

1 Files Affected:

• (modified) libc/spec/posix.td (+5)

diff --git a/libc/spec/posix.td b/libc/spec/posix.td
index 26f41b61dc0015..3b793ea90ffd32 100644
--- a/libc/spec/posix.td
+++ b/libc/spec/posix.td
@@ -1169,6 +1169,11 @@ def POSIX : StandardSpec<"POSIX"> {
               RetValSpec<IntType>,
               [ArgSpec<VoidType>]
           >,
+          FunctionSpec<
+            "fileno",
+            RetValSpec<IntType>,
+            [ArgSpec<FILEPtr>]
+          >,
       ]
   >;
 

[nickdesaulniers]

will merge once presubmit finishes. Sorry I missed this in code review, too. Thanks for the patch!