Merge remote-tracking branch 'origin/master' into prelink

* origin/master: (32 commits)
  libubacktrace: fix backtrace support on arm-eabi, which needs libgcc_eh linked too
  getaddrinfo.c: fix incorrect check for ERANGE from gethostbyaddr_r
  getaddrinfo.c: improve code readability. No functional changes
  string: remove unused variable
  x86_64: silence warning if !TLS
  buildsys: prettify ssp.c handling
  madvise is LINUX_SPECIFIC
  test_nptl: fix expected result for tst-cputimer[123]
  test_nptl: fix expected result for tst-clock2 test
  buildsys: make $(LOCAL_INSTALL_PATH) phony
  ether_aton: reject invalid input
  tests: disable ether tests if !HAS_SOCKET
  inet: add ether_aton testcase
  sysconf: clock_getres depends on HAS_REALTIME
  __rt_sigwaitinfo: depends on HAS_REALTIME
  buildsys: minor fixes in Makefile.arch for C6X
  buildsys: minor fixes in Makefile.arch for microblaze
  libubacktrace: enabled for all archs indeed.
  sparc: don't access fp registers when configured for no fpu
  libubacktrace: generic implementation based dwarf
  ...

Conflicts:
	ldso/ldso/dl-elf.c
	ldso/ldso/mips/elfinterp.c
	ldso/ldso/x86_64/elfinterp.c

Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/libc/inet/ether_addr.c b/libc/inet/ether_addr.c
index 621c62989..9071d71de 100644
--- a/libc/inet/ether_addr.c
+++ b/libc/inet/ether_addr.c
@@ -38,10 +38,12 @@ struct ether_addr *ether_aton_r(const char *asc, struct ether_addr *addr)
 
 	for (cnt = 0; cnt < 6; ++cnt) {
 		unsigned char number;
-		char ch;
+		char ch = *asc++;
 
+		if (ch < 0x20)
+			return NULL;
 		/* | 0x20 is cheap tolower(), valid for letters/numbers only */
-		ch = (*asc++) | 0x20;
+		ch |= 0x20;
 		if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f'))
 			return NULL;
 		number = !(ch > '9') ? (ch - '0') : (ch - 'a' + 10);