toolchain/musl/patches/053-fix-gratuitous-undefined-behavior-in-strptime.patch

   1 From f33b17585058381491e6fda08f491b8e48c7980c Mon Sep 17 00:00:00 2001
   2 From: Rich Felker <dalias@aerifal.cx>
   3 Date: Thu, 20 Oct 2016 13:22:20 -0400
   4 Subject: fix gratuitous undefined behavior in strptime
   5
   6 accessing an object of type const char *restrict as if it had type
   7 char * is not defined.
   8 ---
   9  src/time/strptime.c | 9 +++++++--
  10  1 file changed, 7 insertions(+), 2 deletions(-)
  11
  12 diff --git a/src/time/strptime.c b/src/time/strptime.c
  13 index f41f55f..55c7ed1 100644
  14 --- a/src/time/strptime.c
  15 +++ b/src/time/strptime.c
  16 @@ -22,8 +22,13 @@ char *strptime(const char *restrict s, const char *restrict f, struct tm *restri
  17                 }
  18                 f++;
  19                 if (*f == '+') f++;
  20 -               if (isdigit(*f)) w=strtoul(f, (void *)&f, 10);
  21 -               else w=-1;
  22 +               if (isdigit(*f)) {
  23 +                       char *new_f;
  24 +                       w=strtoul(f, &new_f, 10);
  25 +                       f = new_f;
  26 +               } else {
  27 +                       w=-1;
  28 +               }
  29                 adj=0;
  30                 switch (*f++) {
  31                 case 'a': case 'A':
  32 --
  33 cgit v0.11.2