[bug#59993] [PATCH 2/2] tests: Fix implicit function declaration errors

[Zack Weinberg]

On 2022-12-12 2:05 AM, Frederic Berat wrote:
This is related to an effort to prepare Automake for future GCC/Clang
versions which set c99 as default standard to be used.
Function should be properly declared prior to use in order to be
compatible with c99 standard.

OK in principle, but ...

--- a/t/ax/depcomp.sh
+++ b/t/ax/depcomp.sh
@@ -243,6 +243,7 @@ cat > sub/subfoo.h <<'END'
  #include <stdio.h>
  extern int subfoo (void);
  END
+cp sub/subfoo.h sub/subfoo.save
  
  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 \
+      && mv  "$srcdir"/sub/subfoo.save "$srcdir"/sub/subfoo.h \
        && make_ok \
        || r='not ok'
      result_ "$r" "$pfx dependency tracking works"

These changes don't seem to have anything to do with the patch as 
described.  They should be submitted separately.

--- a/t/lex-nodist.sh
+++ b/t/lex-nodist.sh
@@ -62,6 +62,8 @@ CLEANFILES = $(nodist_prog_SOURCES)
  END
  
  cat > main.c << 'END'
+extern int yylex (void);
+
  int main ()
  {
    return yylex ();

Please change `int main ()` to `int main (void)` as long as you're in here.

--- a/t/ltconv.sh
+++ b/t/ltconv.sh
@@ -91,6 +91,12 @@ echo 'int sub22 () { return 22; }' > sub2/sub22/sub22.c
  
  cat >test.c <<'EOF'
  #include <stdio.h>
+
+extern int sub1 (void);
+extern int sub2 (void);
+extern int sub21 (void);
+extern int sub22 (void);
+
  int main ()
  {
    if (1 != sub1 ())

Same here.

--- a/t/yacc-basic.sh
+++ b/t/yacc-basic.sh
@@ -49,6 +49,7 @@ a : 'a' { exit(0); };
  END
  
  cat > foo.c << 'END'
+extern int yyparse(void);
  int main () { yyparse (); return 1; }
  END

And here.

--- a/t/yacc-clean.sh
+++ b/t/yacc-clean.sh
@@ -74,6 +76,8 @@ END
  cp sub1/parse.y sub2/parse.y
  
  cat > sub1/main.c << 'END'
+extern int yyparse(void);
+
  int main ()
  {
    return yyparse ();

And here.

--- a/t/yacc-nodist.sh
+++ b/t/yacc-nodist.sh
@@ -78,6 +78,8 @@ BUILT_SOURCES = parse.h
  END
  
  cat > sub1/main.c << 'END'
+extern int yyparse(void);
+
  int main ()
  {
    return yyparse ();

And here as well.