From ad0c7da95373a052f282596f736e35417b2fa65b Mon Sep 17 00:00:00 2001
From: Alexey Samsonov <vonosmas@gmail.com>
Date: Fri, 21 Feb 2025 08:24:59 -0800
Subject: [PATCH] [libc] Add missing stdc_first_trailing_zero_ to stdbit.yaml
 (#128101)

These declarations were missing in the generated header. Make sure to
add them, otherwise <stdbit.h> inclusion fails, since the subsequently
included "stdbit-macros.h" expects these declarations to be present.

Co-authored-by: Alexey Samsonov <samsonov@google.com>
---
 libc/include/stdbit.yaml | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/libc/include/stdbit.yaml b/libc/include/stdbit.yaml
index e9bd6b3918e7..8a0ad65c6e8e 100644
--- a/libc/include/stdbit.yaml
+++ b/libc/include/stdbit.yaml
@@ -245,6 +245,36 @@ functions:
     return_type: unsigned int
     arguments:
       - type: unsigned short
+  - name: stdc_first_trailing_zero_uc
+    standards:
+      - stdc
+    return_type: unsigned int
+    arguments:
+      - type: unsigned char
+  - name: stdc_first_trailing_zero_ui
+    standards:
+      - stdc
+    return_type: unsigned int
+    arguments:
+      - type: unsigned int
+  - name: stdc_first_trailing_zero_ul
+    standards:
+      - stdc
+    return_type: unsigned int
+    arguments:
+      - type: unsigned long
+  - name: stdc_first_trailing_zero_ull
+    standards:
+      - stdc
+    return_type: unsigned int
+    arguments:
+      - type: unsigned long long
+  - name: stdc_first_trailing_zero_us
+    standards:
+      - stdc
+    return_type: unsigned int
+    arguments:
+      - type: unsigned short
   - name: stdc_has_single_bit_uc
     standards:
       - stdc