[PATCH 16/27] trim: improve -fanalyzer malloc checking

[Paul Eggert]

---
 ChangeLog  | 1 +
 lib/trim.h | 6 +++++-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 7ef3676a6..eef494f38 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -6,6 +6,7 @@
        * lib/filenamecat.h, lib/malloca.h, lib/modechange.h:
        * lib/mountlist.h, lib/pagealign_alloc.h, lib/quotearg.h:
        * lib/readutmp.h, lib/savedir.h, lib/sh-quote.h, lib/system-quote.h:
+       * lib/trim.h:
        Add malloc-related attributes and include stdlib.h as needed.
        * lib/dfa.c: Include verify.h.
        (assume_nonnull): New macro.
diff --git a/lib/trim.h b/lib/trim.h
index dc886e568..761b8a67d 100644
--- a/lib/trim.h
+++ b/lib/trim.h
@@ -16,6 +16,8 @@
 
 /* Written by Davide Angelocola <davide.angelocola@gmail.com> */
 
+#include <stdlib.h>
+
 /* Trim mode. */
 #define TRIM_TRAILING 0
 #define TRIM_LEADING 1
@@ -30,4 +32,6 @@
 /* Removes leading whitespaces. */
 #define trim_leading(s) trim2(s, TRIM_LEADING)
 
-char *trim2 (const char *, int);
+char *trim2 (const char *, int)
+  _GL_ATTRIBUTE_MALLOC _GL_ATTRIBUTE_DEALLOC_FREE
+  _GL_ATTRIBUTE_RETURNS_NONNULL;
-- 
2.31.1