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authorUlrich Drepper <drepper@redhat.com>2000-08-16 02:05:38 +0000
committerUlrich Drepper <drepper@redhat.com>2000-08-16 02:05:38 +0000
commit9df7693376a16642a8e11869fffbd7a853f2b6a0 (patch)
tree3c7fb565e517a873e75ba92a8774591047e92d49
parent3a41e72395a5715f78e8ee2127783ef44f471003 (diff)
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Update.
2000-08-15 Marko Myllynen <myllynen@lut.fi> * inet/netinet/icmp6.h: Added Mobile IPv6 definitions.
-rw-r--r--CONFORMANCE120
-rw-r--r--ChangeLog4
-rw-r--r--inet/netinet/icmp6.h14
-rw-r--r--linuxthreads/ChangeLog5
-rw-r--r--linuxthreads/Examples/ex12.c46
-rw-r--r--linuxthreads/Makefile3
6 files changed, 185 insertions, 7 deletions
diff --git a/CONFORMANCE b/CONFORMANCE
index 8df261e..bfb8291 100644
--- a/CONFORMANCE
+++ b/CONFORMANCE
@@ -7,7 +7,7 @@ are presented here.
Open Group's hdrchk
--------------------
+===================
The hdrchk test suite is available from the Open Group at
@@ -48,3 +48,121 @@ struct sigevent { <members> };
include files (namely, putting some of them in gcc-local directory) I
copied over the iso646.h, float.h, and stddef.h headers and ignored the
problems resulting from the splitted limits.h file).
+
+
+Technical C standards conformance issues in glibc
+=================================================
+
+If you compile programs against glibc with __STRICT_ANSI__ defined
+(as, for example, by gcc -ansi, gcc -std=c89, gcc -std=iso1990:199409
+or gcc -std=c99), and use only the headers specified by the version of
+the C standard chosen, glibc will attempt to conform to that version
+of the C standard (as indicated by __STDC_VERSION__):
+
+GCC options Standard version
+-ansi ISO/IEC 9899:1990
+-std=c89 ISO/IEC 9899:1990
+-std=iso9899:199409 ISO/IEC 9899:1990 as amended by Amd.1:1995
+-std=c99 ISO/IEC 9899:1999
+
+(Note that -std=c99 is not available in GCC 2.95.2, and that no
+version of GCC presently existing implements the full C99 standard.)
+
+You may then define additional feature test macros to enable the
+features from other standards, and use the headers defined in those
+standards (for example, defining _POSIX_C_SOURCE to be 199506L to
+enable features from ISO/IEC 9945-1:1996).
+
+There are some technical ways in which glibc is known not to conform
+to the supported versions of the C standard, as detailed below. Some
+of these relate to defects in the standard that are expected to be
+fixed, or to compiler limitations.
+
+
+Defects in the C99 standard
+===========================
+
+The definition of macros such as INT8_C in <stdint.h> and <inttypes.h>
+is not implementable (Defect Report #209); this is expected to be
+fixed in a Technical Corrigendum to make the macros yield a constant
+expression of the promoted type (for example, int rather than char)
+rather than needing to be able to represent constants of type char.
+glibc follows this corrected version.
+
+Several of the <fenv.h> functions are specified to return void, but
+Defect Report #202 points out that under some circumstances they may
+need to return an error status. They are expected to be corrected to
+return int; glibc follows this corrected specification.
+
+
+Implementation of library functions
+===================================
+
+The implementation of some library functions does not fully follow the
+standard specification:
+
+C99 added additional forms of floating point constants (hexadecimal
+constants, NaNs and infinities) to be recognised by strtod() and
+scanf(). The effect is to change the behavior of some strictly
+conforming C90 programs; glibc implements the C99 versions only
+irrespective of the standard version selected.
+
+C99 added %a as another scanf format specifier for floating point
+values. This conflicts with the glibc extension where %as, %a[ and
+%aS mean to allocate the string for the data read. A strictly
+conforming C99 program using %as, %a[ or %aS in a scanf format string
+will misbehave under glibc.
+
+
+Compiler limitations
+====================
+
+The macros __STDC_IEC_559__, __STDC_IEC_559_COMPLEX__ and
+__STDC_ISO_10646__ are properly supposed to be defined by the
+compiler, and to be constant throughout the translation unit (before
+and after any library headers are included). However, they mainly
+relate to library features, and the necessary magic has yet to be
+implemented for GCC to predefine them to the correct values for the
+library in use, so glibc defines them in <features.h>. Programs that
+test them before including any standard headers may misbehave.
+
+GCC doesn't support the optional imaginary types. Nor does it
+understand the keyword _Complex. This has the corresponding impact on
+the relevant headers.
+
+glibc's use of extern inline conflicts with C99: in C99, extern inline
+means that an external definition is generated as well as possibly an
+inline definition, but in GCC it means that no external definition is
+generated. When GCC's C99 mode implements C99 inline semantics, this
+will break the uses of extern inline in glibc's headers. (Actually,
+glibc uses `extern __inline', which is beyond the scope of the
+standard, but it would clearly be very confusing for `__inline' and
+plain `inline' to have different meanings in C99 mode.)
+
+glibc's <tgmath.h> implementation is arcane but thought to work
+correctly; a clean and comprehensible version requires compiler
+builtins.
+
+For most of the headers required of freestanding implementations,
+glibc relies on GCC to provide correct versions. (At present, glibc
+provides <stdint.h>, and GCC doesn't.) GCC's <float.h> is missing
+FLT_EVAL_METHOD and DECIMAL_DIG; glibc instead provides them in
+<math.h>, which is not what the standard specifies. GCC's <stdbool.h>
+is broken: GCC lacks support for the _Bool type.
+
+Implementing MATH_ERRNO, MATH_ERREXCEPT and math_errhandling in
+<math.h> needs compiler support: see
+
+http://sources.redhat.com/ml/libc-hacker/2000-06/msg00008.html
+http://sources.redhat.com/ml/libc-hacker/2000-06/msg00014.html
+http://sources.redhat.com/ml/libc-hacker/2000-06/msg00015.html
+
+
+Issues with headers
+===================
+
+There are various technical issues with the definitions contained in
+glibc's headers. See
+
+http://sources.redhat.com/ml/libc-alpha/2000-07/msg00259.html
+http://sources.redhat.com/ml/libc-alpha/2000-07/msg00279.html
diff --git a/ChangeLog b/ChangeLog
index 46154a0..0f877f1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2000-08-15 Marko Myllynen <myllynen@lut.fi>
+
+ * inet/netinet/icmp6.h: Added Mobile IPv6 definitions.
+
2000-08-15 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/powerpc/Dist: Add oldgetrlimit64.c.
diff --git a/inet/netinet/icmp6.h b/inet/netinet/icmp6.h
index 5a38639..2a31a43 100644
--- a/inet/netinet/icmp6.h
+++ b/inet/netinet/icmp6.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
+/* Copyright (C) 1991,92,93,94,95,96,97,2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -36,18 +36,18 @@ struct icmp6_filter
uint32_t data[8];
};
-struct icmp6_hdr
+struct icmp6_hdr
{
uint8_t icmp6_type; /* type field */
uint8_t icmp6_code; /* code field */
uint16_t icmp6_cksum; /* checksum field */
- union
+ union
{
uint32_t icmp6_un_data32[1]; /* type-specific field */
uint16_t icmp6_un_data16[2]; /* type-specific field */
uint8_t icmp6_un_data8[4]; /* type-specific field */
} icmp6_dataun;
- };
+ };
#define icmp6_data32 icmp6_dataun.icmp6_un_data32
#define icmp6_data16 icmp6_dataun.icmp6_un_data16
@@ -135,6 +135,7 @@ struct nd_router_advert /* router advertisement */
#define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
#define ND_RA_FLAG_MANAGED 0x80
#define ND_RA_FLAG_OTHER 0x40
+#define ND_RA_FLAG_HOME_AGENT 0x20
#define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
struct nd_neighbor_solicit /* neighbor solicitation */
@@ -177,7 +178,7 @@ struct nd_redirect /* redirect */
struct in6_addr nd_rd_dst; /* destination address */
/* could be followed by options */
};
-
+
#define nd_rd_type nd_rd_hdr.icmp6_type
#define nd_rd_code nd_rd_hdr.icmp6_code
#define nd_rd_cksum nd_rd_hdr.icmp6_cksum
@@ -195,6 +196,8 @@ struct nd_opt_hdr /* Neighbor discovery option header */
#define ND_OPT_PREFIX_INFORMATION 3
#define ND_OPT_REDIRECTED_HEADER 4
#define ND_OPT_MTU 5
+#define ND_OPT_RTR_ADV_INTERVAL 7
+#define ND_OPT_HOME_AGENT_INFO 8
struct nd_opt_prefix_info /* prefix information */
{
@@ -210,6 +213,7 @@ struct nd_opt_prefix_info /* prefix information */
#define ND_OPT_PI_FLAG_ONLINK 0x80
#define ND_OPT_PI_FLAG_AUTO 0x40
+#define ND_OPT_PI_FLAG_RADDR 0x20
struct nd_opt_rd_hdr /* redirected header */
{
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index 17bd429..187d3a5 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,3 +1,8 @@
+2000-08-15 Ulrich Drepper <drepper@redhat.com>
+
+ * Makefile (tests): Add ex12. Add rule to build it.
+ * Examples/ex12.c: New file.
+
2000-08-13 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/bits/posix_opt.h: Define _POSIX_SEMAPHORES
diff --git a/linuxthreads/Examples/ex12.c b/linuxthreads/Examples/ex12.c
new file mode 100644
index 0000000..62f2f70
--- /dev/null
+++ b/linuxthreads/Examples/ex12.c
@@ -0,0 +1,46 @@
+/* Variant of ex6, but this time we use pthread_exit (). */
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <pthread.h>
+#include <unistd.h>
+
+void *
+test_thread (void *v_param)
+{
+ pthread_exit (NULL);
+}
+
+int
+main (void)
+{
+ unsigned long count;
+
+ setvbuf (stdout, NULL, _IONBF, 0);
+
+ for (count = 0; count < 2000; ++count)
+ {
+ pthread_t thread;
+ int status;
+
+ status = pthread_create (&thread, NULL, test_thread, NULL);
+ if (status != 0)
+ {
+ printf ("status = %d, count = %lu: %s\n", status, count,
+ strerror (errno));
+ return 1;
+ }
+ else
+ {
+ printf ("count = %lu\n", count);
+ }
+ /* pthread_detach (thread); */
+ if (pthread_join (thread, NULL) != 0)
+ {
+ printf ("join failed, count %lu\n", count);
+ return 2;
+ }
+ usleep (10);
+ }
+ return 0;
+}
diff --git a/linuxthreads/Makefile b/linuxthreads/Makefile
index 15a406e..55174d4 100644
--- a/linuxthreads/Makefile
+++ b/linuxthreads/Makefile
@@ -41,7 +41,7 @@ nodelete-yes = -Wl,--enable-new-dtags,-z,nodelete
LDFLAGS-pthread.so = $(nodelete-$(have-z-nodelete))
vpath %.c Examples
-tests = ex1 ex2 ex3 ex4 ex5 ex6 ex7 ex8 ex9 ex10 ex11 joinrace tststack
+tests = ex1 ex2 ex3 ex4 ex5 ex6 ex7 ex8 ex9 ex10 ex11 ex12 joinrace tststack
include ../Rules
@@ -76,5 +76,6 @@ $(objpfx)ex8: $(libpthread)
$(objpfx)ex9: $(libpthread)
$(objpfx)ex10: $(libpthread) $(librt)
$(objpfx)ex11: $(libpthread) $(librt)
+$(objpfx)ex12: $(libpthread)
$(objpfx)joinrace: $(libpthread)
$(objpfx)tststack: $(libpthread)