Merge pull request libgit2#6113 from libgit2/ethomson/cmake3

Add missing-declarations warning globally

Author: ethomson

cmake/DefaultCFlags.cmake

@@ -125,6 +125,7 @@ else()
 	enable_warnings(documentation)
 	disable_warnings(documentation-deprecated-sync)
 	disable_warnings(missing-field-initializers)
+	enable_warnings(missing-declarations)
 	enable_warnings(strict-aliasing)
 	enable_warnings(strict-prototypes)
 	enable_warnings(declaration-after-statement)

examples/add.c

@@ -110,22 +110,7 @@ int print_matched_cb(const char *path, const char *matched_pathspec, void *paylo
 	return ret;
 }
 
-void init_array(git_strarray *array, int argc, char **argv)
-{
-	unsigned int i;
-
-	array->count = argc;
-	array->strings = calloc(array->count, sizeof(char *));
-	assert(array->strings != NULL);
-
-	for (i = 0; i < array->count; i++) {
-		array->strings[i] = argv[i];
-	}
-
-	return;
-}
-
-void print_usage(void)
+static void print_usage(void)
 {
 	fprintf(stderr, "usage: add [options] [--] file-spec [file-spec] [...]\n\n");
 	fprintf(stderr, "\t-n, --dry-run    dry run\n");

fuzzers/commit_graph_fuzzer.c

@@ -17,6 +17,8 @@
 #include "hash.h"
 #include "commit_graph.h"
 
+#include "standalone_driver.h"
+
 int LLVMFuzzerInitialize(int *argc, char ***argv)
 {
 	GIT_UNUSED(argc);

fuzzers/config_file_fuzzer.c

@@ -10,9 +10,11 @@
 #include "git2.h"
 #include "config_backend.h"
 
+#include "standalone_driver.h"
+
 #define UNUSED(x) (void)(x)
 
-int foreach_cb(const git_config_entry *entry, void *payload)
+static int foreach_cb(const git_config_entry *entry, void *payload)
 {
 	UNUSED(entry);
 	UNUSED(payload);

fuzzers/download_refs_fuzzer.c

@@ -15,6 +15,8 @@
 #include "git2/sys/transport.h"
 #include "futils.h"
 
+#include "standalone_driver.h"
+
 #define UNUSED(x) (void)(x)
 
 struct fuzzer_buffer {
@@ -130,7 +132,7 @@ static int fuzzer_subtransport_new(
 	return 0;
 }
 
-int fuzzer_subtransport_cb(
+static int fuzzer_subtransport_cb(
 	git_smart_subtransport **out,
 	git_transport *owner,
 	void *payload)
@@ -145,7 +147,7 @@ int fuzzer_subtransport_cb(
 	return 0;
 }
 
-int fuzzer_transport_cb(git_transport **out, git_remote *owner, void *param)
+static int fuzzer_transport_cb(git_transport **out, git_remote *owner, void *param)
 {
 	git_smart_subtransport_definition def = {
 		fuzzer_subtransport_cb,
@@ -155,7 +157,7 @@ int fuzzer_transport_cb(git_transport **out, git_remote *owner, void *param)
 	return git_transport_smart(out, owner, &def);
 }
 
-void fuzzer_git_abort(const char *op)
+static void fuzzer_git_abort(const char *op)
 {
 	const git_error *err = git_error_last();
 	fprintf(stderr, "unexpected libgit error: %s: %s\n",

fuzzers/midx_fuzzer.c

@@ -16,6 +16,8 @@
 #include "hash.h"
 #include "midx.h"
 
+#include "standalone_driver.h"
+
 int LLVMFuzzerInitialize(int *argc, char ***argv)
 {
 	GIT_UNUSED(argc);

fuzzers/objects_fuzzer.c

@@ -10,6 +10,8 @@
 #include "git2.h"
 #include "object.h"
 
+#include "standalone_driver.h"
+
 #define UNUSED(x) (void)(x)
 
 int LLVMFuzzerInitialize(int *argc, char ***argv)

fuzzers/packfile_fuzzer.c

@@ -14,6 +14,8 @@
 #include "common.h"
 #include "str.h"
 
+#include "standalone_driver.h"
+
 static git_odb *odb = NULL;
 static git_odb_backend *mempack = NULL;
 

fuzzers/patch_parse_fuzzer.c

@@ -11,6 +11,8 @@
 #include "patch.h"
 #include "patch_parse.h"
 
+#include "standalone_driver.h"
+
 #define UNUSED(x) (void)(x)
 
 int LLVMFuzzerInitialize(int *argc, char ***argv)

fuzzers/standalone_driver.c

@@ -11,8 +11,7 @@
 #include "futils.h"
 #include "path.h"
 
-extern int LLVMFuzzerTestOneInput(const unsigned char *data, size_t size);
-extern int LLVMFuzzerInitialize(int *argc, char ***argv);
+#include "standalone_driver.h"
 
 static int run_one_file(const char *filename)
 {