From e6a3e0451a21fc1b5f248f5f2bcbbacf5e905d68 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Fri, 10 Dec 2010 05:35:53 -0500
Subject: Test for access() needing <unistd.h>.

---
 Makefile         |  2 +-
 deheader         |  1 +
 test/access.c    | 20 ++++++++++++++++++++
 test/regress.chk |  7 ++++++-
 4 files changed, 28 insertions(+), 2 deletions(-)
 create mode 100644 test/access.c

diff --git a/Makefile b/Makefile
index 4129a42..df46acb 100644
--- a/Makefile
+++ b/Makefile
@@ -14,7 +14,7 @@ deheader.html: deheader.xml
 	xmlto html-nochunks deheader.xml
 
 clean:
-	rm -f *~ *.1 *.html test/*.o MANIFEST SHIPPER.*
+	rm -f *~ *.1 *.html test/*.o test/*~ MANIFEST SHIPPER.*
 
 regress:
 	@echo "Testing deheader: no output is good news."
diff --git a/deheader b/deheader
index 5f6b69d..d026911 100755
--- a/deheader
+++ b/deheader
@@ -42,6 +42,7 @@ version = "0.3"
 requirements = map(lambda (r, h): (re.compile(r), h), (
     (r"a64l\s*\(",      "<stdlib.h>"),
     (r"l64a\s*\(",      "<stdlib.h>"),
+    (r"access\s*\(",    "<unistd.h>"),
     (r"umask\s*\(",     "<sys/stat.h>|<sys/types.h>"),
     (r"<sys/socket.h>", "<sys/stat.h>|<sys/types.h>"),
     ))
diff --git a/test/access.c b/test/access.c
new file mode 100644
index 0000000..7307fd5
--- /dev/null
+++ b/test/access.c
@@ -0,0 +1,20 @@
+/* access() requires <stdlib.h> */
+
+/*
+ * Items: access(
+ * Requires: <stdlib.h>
+ * Standardized-By: SuS
+ * Not-Detected-by: gcc-4.4.3 + Linux
+ */
+
+#include <unistd.h>
+
+main(int arg, char **argv)
+{
+    /* 
+     * Note: use of a symbolic constant like F_OK *will* 
+     * cause the compile to fail and the requrement
+     * for <unistd.h> to be tetected.
+     */
+    (void)access("/dev/null", 0);
+}
diff --git a/test/regress.chk b/test/regress.chk
index 9d17e27..8135ba7 100644
--- a/test/regress.chk
+++ b/test/regress.chk
@@ -12,11 +12,16 @@ deheader: test/a64l.c includes <stdlib.h>
 deheader: test/a64l.c has requires <stdlib.h> from a64l\s*\(
 deheader: test/a64l.c has requires <stdlib.h> from l64a\s*\(
 deheader: test/abs.c includes <stdlib.h>
+deheader: test/access.c has requires <unistd.h> from access\s*\(
+deheader: test/access.c has requires <unistd.h> from access\s*\(
+deheader: test/access.c includes <unistd.h>
+deheader: test/access.c has requires <unistd.h> from access\s*\(
 deheader: test/abort.c includes <stdlib.h>
 deheader: test/string.c without <string.h> succeeded.
 deheader: remove <string.h> from test/string.c
 deheader: test/abs.c without <stdlib.h> succeeded.
 deheader: remove <stdlib.h> from test/abs.c
+deheader: in test/access.c, retaining required '#include <unistd.h>\n'
 deheader: in test/a64l.c, retaining required '#include <stdlib.h>\n'
 deheader: test/abort.c without <stdlib.h> succeeded.
 deheader: remove <stdlib.h> from test/abort.c
@@ -26,4 +31,4 @@ deheader: remove <stdio.h> from test/duplicate.c
 deheader: remove <stdio.h> from test/duplicate.c
 deheader: in test/umask.c, retaining required '#include <sys/types.h>\n'
 deheader: in test/umask.c, retaining required '#include <sys/stat.h>\n'
-deheader: saw 7 files, 8 includes, 5 removed
+deheader: saw 8 files, 9 includes, 5 removed
-- 
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