[S] Change in coreboot[main]: util/lint: Add lint rule to warn if <stdint.h> is included but not used

[Elyes Haouas (Code Review)]

Elyes Haouas has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/82712?usp=email )

Change subject: util/lint: Add lint rule to warn if <stdint.h> is included but not used
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util/lint: Add lint rule to warn if <stdint.h> is included but not used

Change-Id: I318189f88c4ee8803075efc4fe2cb9b58547c126
Signed-off-by: Elyes Haouas 
---
A util/lint/lint-stable-034-stdint-h
1 file changed, 41 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/82712/1

diff --git a/util/lint/lint-stable-034-stdint-h b/util/lint/lint-stable-034-stdint-h
new file mode 100755
index 0000000..61ca04d
--- /dev/null
+++ b/util/lint/lint-stable-034-stdint-h
@@ -0,0 +1,41 @@
+#!/usr/bin/env sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# DESCR: Verify if <stdint.h> is needed in modified files
+#
+
+# Get the list of modified files
+MODIFIED_FILES=$(git diff --cached --name-only --diff-filter=ACM | grep -E '.c$|.h$')
+if [ -z "$MODIFIED_FILES" ]; then
+  exit 0
+fi
+
+# Create temporary files to hold the lists
+TMP_INCLUDE=$(mktemp)
+TMP_TYPES=$(mktemp)
+
+# Find files including <stdint.h>
+for file in $MODIFIED_FILES; do
+  if grep -q '#include <stdint.h>' "$file"; then
+    echo "$file" >> "$TMP_INCLUDE"
+  fi
+done
+
+# Find files using stdint.h types
+for file in $MODIFIED_FILES; do
+  if grep -q '\bint8_t\b|int16_t\b|int32_t\b|int64_t\b|uint8_t\b|uint16_t\b|uint32_t\b|uint64_t\b|intptr_t\b|uintptr_t\b' "$file"; then
+    echo "$file" >> "$TMP_TYPES"
+  fi
+done
+
+# Compare the two lists to find unnecessary includes
+UNNEEDED_INCLUDE=$(comm -23 <(sort "$TMP_INCLUDE") <(sort "$TMP_TYPES"))
+
+# Output warnings for unneeded includes
+if [ -n "$UNNEEDED_INCLUDE" ]; then
+  echo "Warning: The following files include <stdint.h> but do not use its types:"
+  echo "$UNNEEDED_INCLUDE"
+fi
+
+# Clean up temporary files
+rm -f "$TMP_INCLUDE" "$TMP_TYPES"