glibc_scanf_workaround.patch

Bug in glibc-2.18: https://sourceware.org/bugzilla/show_bug.cgi?id=15917


--- a/tune/sysinfo/masrch.c
+++ b/tune/sysinfo/masrch.c
@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <assert.h>
+#include <errno.h>
 
 #ifndef NTIM
    #define NTIM 3
@@ -113,7 +114,14 @@
    j = 0;
    for (i=0; i != NTIM; i++)
    {
-      assert( fscanf(fp, "%lf", &mflop[i]) );
+      /* FIXME: This assumes one float per line immediately followed by \n. */
+      char buf[100]; /* enough to read a double */
+      char *end;
+
+      assert(fgets(buf, sizeof buf, fp));
+      errno = 0;
+      mflop[i] = strtod(buf, &end);
+      assert(errno == 0 && end != buf && *end == '\n');
    }
    fclose(fp);
 /*