Make report() from usage.c public as vreportf() and use it.

There exist already a number of static functions named 'report', therefore,
the function name was changed.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

fast-import.c

@@ -483,14 +483,12 @@ static void dump_marks(void);
 static NORETURN void die_nicely(const char *err, va_list params)
 {
 	static int zombie;
-	char message[2 * PATH_MAX];
 
-	vsnprintf(message, sizeof(message), err, params);
-	fputs("fatal: ", stderr);
-	fputs(message, stderr);
-	fputc('\n', stderr);
+	vreportf("fatal: ", err, params);
 
 	if (!zombie) {
+		char message[2 * PATH_MAX];
+
 		zombie = 1;
 		write_crash_report(message);
 		end_packfile();

git-compat-util.h

@@ -192,6 +192,7 @@ extern char *gitbasename(char *);
 #include "compat/bswap.h"
 
 /* General helper functions */
+extern void vreportf(const char *prefix, const char *err, va_list params);
 extern NORETURN void usage(const char *err);
 extern NORETURN void usagef(const char *err, ...) __attribute__((format (printf, 1, 2)));
 extern NORETURN void die(const char *err, ...) __attribute__((format (printf, 1, 2)));

http-backend.c

@@ -538,14 +538,11 @@ static void service_rpc(char *service_name)
 
 static NORETURN void die_webcgi(const char *err, va_list params)
 {
-	char buffer[1000];
-
 	http_status(500, "Internal Server Error");
 	hdr_nocache();
 	end_headers();
 
-	vsnprintf(buffer, sizeof(buffer), err, params);
-	fprintf(stderr, "fatal: %s\n", buffer);
+	vreportf("fatal: ", err, params);
 	exit(0);
 }
 

usage.c

@@ -5,7 +5,7 @@
  */
 #include "git-compat-util.h"
 
-static void report(const char *prefix, const char *err, va_list params)
+void vreportf(const char *prefix, const char *err, va_list params)
 {
 	char msg[4096];
 	vsnprintf(msg, sizeof(msg), err, params);
@@ -14,24 +14,24 @@ static void report(const char *prefix, const char *err, va_list params)
 
 static NORETURN void usage_builtin(const char *err, va_list params)
 {
-	report("usage: ", err, params);
+	vreportf("usage: ", err, params);
 	exit(129);
 }
 
 static NORETURN void die_builtin(const char *err, va_list params)
 {
-	report("fatal: ", err, params);
+	vreportf("fatal: ", err, params);
 	exit(128);
 }
 
 static void error_builtin(const char *err, va_list params)
 {
-	report("error: ", err, params);
+	vreportf("error: ", err, params);
 }
 
 static void warn_builtin(const char *warn, va_list params)
 {
-	report("warning: ", warn, params);
+	vreportf("warning: ", warn, params);
 }
 
 /* If we are in a dlopen()ed .so write to a global variable would segfault