Re: va_copy is not available on all systems.

[Alex Riesen <raa.lkml@gmail.com>]

Johannes Sixt, Mon, Aug 20, 2007 15:16:56 +0200:
> Since va_copy() must be provided by the compiler, we don't have a
> reasonable chance to provide a working definition in git_compat_util.h.

Maybe we don't have to:

Subject: [PATCH] Avoid using va_copy in fast-import: it seem to be unportable

diff --git a/fast-import.c b/fast-import.c
index 2d5224c..04948e9 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -375,7 +375,7 @@ static void write_branch_report(FILE *rpt, struct branch *b)
 	fputc('\n', rpt);
 }
 
-static void write_crash_report(const char *err, va_list params)
+static void write_crash_report(const char *err)
 {
 	char *loc = git_path("fast_import_crash_%d", getpid());
 	FILE *rpt = fopen(loc, "w");
@@ -396,9 +396,7 @@ static void write_crash_report(const char *err, va_list params)
 	fprintf(rpt, "    at %s\n", show_date(time(NULL), 0, DATE_LOCAL));
 	fputc('\n', rpt);
 
-	fputs("fatal: ", rpt);
-	vfprintf(rpt, err, params);
-	fputc('\n', rpt);
+	fprintf(rpt, "fatal: %s\n", err);
 
 	fputc('\n', rpt);
 	fputs("Most Recent Commands Before Crash\n", rpt);
@@ -442,18 +440,15 @@ static void write_crash_report(const char *err, va_list params)
 static NORETURN void die_nicely(const char *err, va_list params)
 {
 	static int zombie;
-	va_list x_params;
+	char message[BUFSIZ];
 
-	va_copy(x_params, params);
-	fputs("fatal: ", stderr);
-	vfprintf(stderr, err, params);
-	fputc('\n', stderr);
+	vsnprintf(message, sizeof(message), err, params);
+	fprintf(stderr, "fatal: %s\n", message);
 
 	if (!zombie) {
 		zombie = 1;
-		write_crash_report(err, x_params);
+		write_crash_report(message);
 	}
-	va_end(x_params);
 	exit(128);
 }