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automake/tests-avoid-implicit-function-declarations.patch

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From 80714ea0aba62f025780f432abfbab2e66f6f801 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20B=C3=A9rat?= <fberat@redhat.com>
Date: Tue, 29 Aug 2023 11:00:41 -0700
Subject: [PATCH] tests: avoid implicit function declarations.
This patch is from https://bugs.gnu.org/59993 (v2 part 2).
* t/c-demo.sh: This patch is related to an effort to prepare
Automake for future GCC/Clang versions which set c99 as default
standard to be used.
C99 requires that functions be properly declared before use.
This is true for both user functions and standard functions,
e.g., printf.
* t/cond35.sh: Likewise.
* t/dist-vs-built-sources.sh: Likewise.
* t/lex-clean.sh: Likewise.
* t/lex-multiple.sh: Likewise.
* t/lex-nodist.sh: Likewise.
* t/ltcond2.sh: Likewise.
* t/ltconv.sh: Likewise.
* t/subobj-clean-lt-pr10697.sh: Likewise.
* t/subobj-clean-pr10697.sh: Likewise.
* t/tags-pr12372.sh: Likewise.
* t/yacc-basic.sh: Likewise.
* t/yacc-clean.sh: Likewise.
* t/yacc-nodist.sh: Likewise.
This patch is from https://bugs.gnu.org/59993.
---
t/c-demo.sh | 1 +
t/cond35.sh | 2 ++
t/dist-vs-built-sources.sh | 1 +
t/lex-clean.sh | 1 +
t/lex-multiple.sh | 4 ++++
t/lex-nodist.sh | 2 ++
t/ltcond2.sh | 2 ++
t/ltconv.sh | 6 ++++++
t/subobj-clean-lt-pr10697.sh | 10 +++++++++-
t/subobj-clean-pr10697.sh | 10 +++++++++-
t/tags-pr12372.sh | 3 ++-
t/yacc-basic.sh | 1 +
t/yacc-clean.sh | 4 ++++
t/yacc-nodist.sh | 2 ++
14 files changed, 46 insertions(+), 3 deletions(-)
diff --git a/t/c-demo.sh b/t/c-demo.sh
index 446551958..ee0d5c3ec 100644
--- a/t/c-demo.sh
+++ b/t/c-demo.sh
@@ -113,6 +113,7 @@ test -f build-aux/compile # We have per-target flags on C sources.
./configure --enable-dependency-tracking
cat > src/main.c << 'END'
+#include <stdio.h>
#include "foo.h"
#include "bar.h"
int main (void)
diff --git a/t/cond35.sh b/t/cond35.sh
index 8b044644e..a00c9e280 100644
--- a/t/cond35.sh
+++ b/t/cond35.sh
@@ -71,6 +71,8 @@ END
cat > tparse.y << 'END'
%{
+extern int yylex(void);
+
void yyerror (const char *s) {}
%}
%token EOF
diff --git a/t/dist-vs-built-sources.sh b/t/dist-vs-built-sources.sh
index da8c8fb23..4c73d53b0 100644
--- a/t/dist-vs-built-sources.sh
+++ b/t/dist-vs-built-sources.sh
@@ -41,6 +41,7 @@ foo_SOURCES = foo.c
END
cat > foo.c << 'END'
+#include <stdio.h>
#include "h.h"
int main (void) { printf ("%s\n", F); return 0; }
END
diff --git a/t/lex-clean.sh b/t/lex-clean.sh
index 4668e97c7..a966b4b07 100644
--- a/t/lex-clean.sh
+++ b/t/lex-clean.sh
@@ -60,6 +60,7 @@ cat > lexer.l << 'END'
END
cat > main.c << 'END'
+extern int yylex (void);
int main (void)
{
return yylex ();
diff --git a/t/lex-multiple.sh b/t/lex-multiple.sh
index 6486a012f..32dd854b6 100644
--- a/t/lex-multiple.sh
+++ b/t/lex-multiple.sh
@@ -58,6 +58,10 @@ cat > main.c << 'END'
#include <stdlib.h>
#include <string.h>
+extern int yylex (void);
+extern int foolex (void);
+extern int bar_lex (void);
+
int main (int argc, char *argv[])
{
if (argc != 2)
diff --git a/t/lex-nodist.sh b/t/lex-nodist.sh
index d499aea7f..29f0cb0ec 100644
--- a/t/lex-nodist.sh
+++ b/t/lex-nodist.sh
@@ -61,6 +61,8 @@ CLEANFILES = $(nodist_prog_SOURCES)
END
cat > main.c << 'END'
+extern int yylex (void);
+
int main ()
{
return yylex ();
diff --git a/t/ltcond2.sh b/t/ltcond2.sh
index 000d0ad34..c9f7af1dc 100644
--- a/t/ltcond2.sh
+++ b/t/ltcond2.sh
@@ -73,6 +73,8 @@ void print (void)
END
cat > main.c <<'END'
+extern void print(void);
+
int main (void)
{
print();
diff --git a/t/ltconv.sh b/t/ltconv.sh
index 64e42949a..3c35f50e7 100644
--- 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 ())
diff --git a/t/subobj-clean-lt-pr10697.sh b/t/subobj-clean-lt-pr10697.sh
index 0b4bb10a7..94af0778b 100644
--- a/t/subobj-clean-lt-pr10697.sh
+++ b/t/subobj-clean-lt-pr10697.sh
@@ -83,7 +83,15 @@ libfoo_la_SOURCES = \
END
mkdir sub1 sub2
-echo 'int libmain (void)' > main.c
+
+echo "/* Subobj clean: libtool case*/" > main.c
+for i in 1 2; do
+ for j in a b c d e f; do
+ echo "extern void $j$i (void);" >> main.c
+ done
+done
+
+echo 'int libmain (void)' >> main.c
echo '{' >> main.c
for i in 1 2; do
for j in a b c d e f; do
diff --git a/t/subobj-clean-pr10697.sh b/t/subobj-clean-pr10697.sh
index 591684bc8..360716ec3 100644
--- a/t/subobj-clean-pr10697.sh
+++ b/t/subobj-clean-pr10697.sh
@@ -81,7 +81,15 @@ foo_SOURCES = \
END
mkdir sub1 sub2
-echo 'int main (void)' > main.c
+
+echo "/* Subobj clean: generic case*/" > main.c
+for i in 1 2; do
+ for j in a b c d e f; do
+ echo "extern void $j$i (void);" >> main.c
+ done
+done
+
+echo 'int main (void)' >> main.c
echo '{' >> main.c
for i in 1 2; do
for j in a b c d e f; do
diff --git a/t/tags-pr12372.sh b/t/tags-pr12372.sh
index 7e86f7214..19ac07da4 100644
--- a/t/tags-pr12372.sh
+++ b/t/tags-pr12372.sh
@@ -53,7 +53,8 @@ noinst_PROGRAMS = zap
zap_SOURCES = zardoz.pc
END
-echo 'int main(void) [ return bar(1); ]' > foo-main.pc
+echo 'extern int bar(int);' > foo-main.pc
+echo 'int main(void) [ return bar(1); ]' >> foo-main.pc
echo 'int bar(int x) { return !x; }' > barbar.c
echo 'int m@in(void) { return 0; }' > sub/zardoz.pc
diff --git a/t/yacc-basic.sh b/t/yacc-basic.sh
index 51ee5f6a3..be578e14a 100644
--- a/t/yacc-basic.sh
+++ b/t/yacc-basic.sh
@@ -51,6 +51,7 @@ a : 'a' { exit(0); };
END
cat > foo.c << 'END'
+extern int yyparse(void);
int main () { yyparse (); return 1; }
END
diff --git a/t/yacc-clean.sh b/t/yacc-clean.sh
index d0f793843..da2e3d5b2 100644
--- a/t/yacc-clean.sh
+++ b/t/yacc-clean.sh
@@ -67,6 +67,8 @@ END
cat > sub1/parse.y << 'END'
%{
+#include <stdio.h>
+
int yylex () { return (getchar ()); }
void yyerror (const char *s) {}
%}
@@ -76,6 +78,8 @@ END
cp sub1/parse.y sub2/parse.y
cat > sub1/main.c << 'END'
+extern int yyparse(void);
+
int main ()
{
return yyparse ();
diff --git a/t/yacc-nodist.sh b/t/yacc-nodist.sh
index 8e5338e94..e3b02b3fa 100644
--- a/t/yacc-nodist.sh
+++ b/t/yacc-nodist.sh
@@ -80,6 +80,8 @@ BUILT_SOURCES = parse.h
END
cat > sub1/main.c << 'END'
+extern int yyparse(void);
+
int main ()
{
return yyparse ();
--
2.35.3
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