Turn alloca() with fixed size into array.

[r22983]

diff --git a/ir/be/beschedrss.c b/ir/be/beschedrss.c
index 303961e..44e9be5 100644 (file)
--- a/ir/be/beschedrss.c
+++ b/ir/be/beschedrss.c
@@ -433,19 +433,20 @@ static void debug_vcg_dump_kill(rss_t *rss) {
 }
 
 /* Dumps the potential killing DAG (PKG) as vcg. */
-static void debug_vcg_dump_pkg(rss_t *rss, ir_nodeset_t *max_ac, int iteration) {
+static void debug_vcg_dump_pkg(rss_t *rss, ir_nodeset_t *max_ac, int iteration)
+{
        FILE              *f;
        char              file_name[256];
-       char              *suffix   = alloca(32);
+       char              suffix[32];
        static const char suffix1[] = "-RSS-PKG.vcg";
        static const char suffix2[] = "-RSS-PKG-MAXAC.vcg";
        plist_element_t   *el;
 
        if (! max_ac) {
-               snprintf(suffix, 32, "%s", suffix1);
+               snprintf(suffix, sizeof(suffix), "%s", suffix1);
        }
        else {
-               snprintf(suffix, 32, "-%02d%s", iteration, suffix2);
+               snprintf(suffix, sizeof(suffix), "-%02d%s", iteration, suffix2);
        }
 
        build_file_name(rss, suffix, strlen(suffix) + 1, file_name, sizeof(file_name));