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[bug#60962] [PATCH v3] tests: Fix implicit function declaration in ax/de

From: Frédéric Bérat
Subject: [bug#60962] [PATCH v3] tests: Fix implicit function declaration in ax/
Date: Fri, 20 Jan 2023 11:51:39 +0100

From: Frederic Berat <>

Change since v2:
 - Replace the mv operation by a cp operation to ensure that subfoo.h is
   considered being modified.

-- 8< --

In, the following occurs:

1. Files are created so that headers and units are available in
2. Multiple "make" are executed, while modifying the content of the
   headers, some should fail, others should succeed.
3. At the end, the "sub/subfoo.h" header gets removed.
4. make is executed again, which is expected to succeed.

Yet, with c99, this can't work as the subfoo.h header contains
declaration that are used by foo.c.
Thus, we need to get them back, either by inserting the declaration in
foo.c (or any other header/unit), or by restoring subfoo.h to its
original state.

The later solution seems the easiest path, being less intrusive in
 t/ax/ | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/t/ax/ b/t/ax/
index 7a3ac63a7..c92f7c8df 100644
--- a/t/ax/
+++ b/t/ax/
@@ -243,6 +243,7 @@ cat > sub/subfoo.h <<'END'
 #include <stdio.h>
 extern int subfoo (void);
+cp sub/subfoo.h sub/
 cat > src/baz.c <<'END'
 #include "baz.h"
@@ -399,8 +400,7 @@ do_test ()
       && rewrite "$srcdir"/sub/subfoo.h echo 'choke me' \
       && not $MAKE \
       && delete "$srcdir"/sub/subfoo.h \
-      && edit "$srcdir"/sub/subfoo.c -e 1d \
-      && edit "$srcdir"/foo.h -e 2d \
+      && cp "$srcdir"/sub/ "$srcdir"/sub/subfoo.h \
       && make_ok \
       || r='not ok'
     result_ "$r" "$pfx dependency tracking works"

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