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authorDJ Delorie <dj@redhat.com>2013-03-17 21:25:53 +0000
committerDJ Delorie <dj@redhat.com>2013-03-17 21:25:53 +0000
commiteea302037a35add252f2428a463dc7796d67e192 (patch)
treed4585ff464d4551759db25b18bc907abd0ababe7 /libiberty
parenta09ae1c1e873dca08128d8c9cc225a67efd74870 (diff)
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merge from gcc
Diffstat (limited to 'libiberty')
-rw-r--r--libiberty/ChangeLog12
-rw-r--r--libiberty/libiberty.texi7
-rw-r--r--libiberty/obstacks.texi47
-rw-r--r--libiberty/setenv.c3
-rw-r--r--libiberty/simple-object-mach-o.c2
5 files changed, 36 insertions, 35 deletions
diff --git a/libiberty/ChangeLog b/libiberty/ChangeLog
index fa921e4..06e7c1c 100644
--- a/libiberty/ChangeLog
+++ b/libiberty/ChangeLog
@@ -1,7 +1,13 @@
-2013-03-17 Eli Zaretskii <eliz@gnu.org>
+2013-03-06 Tobias Burnus <burnus@net-b.de>
- * setenv.c [!HAVE_ENVIRON_DECL]: Avoid declaring environ if it is
- a macro, as this causes compiler warnings with MinGW.
+ * libiberty.texi: Update comment, remove lowersections.
+ * obstacks.texi: Regenerate.
+
+2013-03-05 Jakub Jelinek <jakub@redhat.com>
+
+ PR middle-end/56526
+ * simple-object-mach-o.c (simple_object_mach_o_segment): Initialize
+ wrapper_sect_offset to avoid a warning.
2013-03-01 Andreas Schwab <schwab@linux-m68k.org>
diff --git a/libiberty/libiberty.texi b/libiberty/libiberty.texi
index f1e4bdd..f4af66d 100644
--- a/libiberty/libiberty.texi
+++ b/libiberty/libiberty.texi
@@ -241,13 +241,8 @@ central location from which to use, maintain, and distribute them.
* Obstacks:: Stacks of arbitrary objects.
@end menu
-@c This is generated from the glibc manual using a make-obstacks-texi.sh
-@c script of Phil's. Hope it's accurate.
-@lowersections
-@lowersections
+@c This is generated from the glibc manual using contrib/make-obstacks-texi.pl
@include obstacks.texi
-@raisesections
-@raisesections
@node Functions
@chapter Function, Variable, and Macro Listing.
diff --git a/libiberty/obstacks.texi b/libiberty/obstacks.texi
index 67780aa..adcd810 100644
--- a/libiberty/obstacks.texi
+++ b/libiberty/obstacks.texi
@@ -1,5 +1,5 @@
@node Obstacks
-@chapter Obstacks
+@subsection Obstacks
@cindex obstacks
An @dfn{obstack} is a pool of memory containing a stack of objects. You
@@ -15,25 +15,25 @@ the objects are usually small. And the only space overhead per object is
the padding needed to start each object on a suitable boundary.
@menu
-* Creating Obstacks:: How to declare an obstack in your program.
-* Preparing for Obstacks:: Preparations needed before you can
- use obstacks.
+* Creating Obstacks:: How to declare an obstack in your program.
+* Preparing for Obstacks:: Preparations needed before you can
+ use obstacks.
* Allocation in an Obstack:: Allocating objects in an obstack.
* Freeing Obstack Objects:: Freeing objects in an obstack.
-* Obstack Functions:: The obstack functions are both
- functions and macros.
+* Obstack Functions:: The obstack functions are both
+ functions and macros.
* Growing Objects:: Making an object bigger by stages.
-* Extra Fast Growing:: Extra-high-efficiency (though more
- complicated) growing objects.
+* Extra Fast Growing:: Extra-high-efficiency (though more
+ complicated) growing objects.
* Status of an Obstack:: Inquiries about the status of an obstack.
* Obstacks Data Alignment:: Controlling alignment of objects in obstacks.
* Obstack Chunks:: How obstacks obtain and release chunks;
- efficiency considerations.
+ efficiency considerations.
* Summary of Obstacks::
@end menu
@node Creating Obstacks
-@section Creating Obstacks
+@subsubsection Creating Obstacks
The utilities for manipulating obstacks are declared in the header
file @file{obstack.h}.
@@ -74,7 +74,7 @@ directly or indirectly. You must also supply a function to free a chunk.
These matters are described in the following section.
@node Preparing for Obstacks
-@section Preparing for Using Obstacks
+@subsubsection Preparing for Using Obstacks
Each source file in which you plan to use the obstack functions
must include the header file @file{obstack.h}, like this:
@@ -160,7 +160,7 @@ obstack_alloc_failed_handler = &my_obstack_alloc_failed;
@end defvar
@node Allocation in an Obstack
-@section Allocation in an Obstack
+@subsubsection Allocation in an Obstack
@cindex allocation (obstacks)
The most direct way to allocate an object in an obstack is with
@@ -233,7 +233,7 @@ Contrast this with the previous example of @code{savestring} using
@code{malloc} (@pxref{Basic Allocation, , , libc, The GNU C Library Reference Manual}).
@node Freeing Obstack Objects
-@section Freeing Objects in an Obstack
+@subsubsection Freeing Objects in an Obstack
@cindex freeing (obstacks)
To free an object allocated in an obstack, use the function
@@ -265,7 +265,7 @@ frees the chunk (@pxref{Preparing for Obstacks}). Then other
obstacks, or non-obstack allocation, can reuse the space of the chunk.
@node Obstack Functions
-@section Obstack Functions and Macros
+@subsubsection Obstack Functions and Macros
@cindex macros
The interfaces for using obstacks may be defined either as functions or
@@ -321,7 +321,7 @@ various language extensions in GNU C permit defining the macros so as to
compute each argument only once.
@node Growing Objects
-@section Growing Objects
+@subsubsection Growing Objects
@cindex growing objects (in obstacks)
@cindex changing the size of a block (obstacks)
@@ -435,7 +435,7 @@ the current object smaller. Just don't try to shrink it beyond zero
length---there's no telling what will happen if you do that.
@node Extra Fast Growing
-@section Extra Fast Growing Objects
+@subsubsection Extra Fast Growing Objects
@cindex efficiency and obstacks
The usual functions for growing objects incur overhead for checking
@@ -538,7 +538,7 @@ add_string (struct obstack *obstack, const char *ptr, int len)
@end smallexample
@node Status of an Obstack
-@section Status of an Obstack
+@subsubsection Status of an Obstack
@cindex obstack status
@cindex status of obstack
@@ -580,12 +580,13 @@ obstack_next_free (@var{obstack-ptr}) - obstack_base (@var{obstack-ptr})
@end deftypefun
@node Obstacks Data Alignment
-@section Alignment of Data in Obstacks
+@subsubsection Alignment of Data in Obstacks
@cindex alignment (in obstacks)
Each obstack has an @dfn{alignment boundary}; each object allocated in
the obstack automatically starts on an address that is a multiple of the
-specified boundary. By default, this boundary is 4 bytes.
+specified boundary. By default, this boundary is aligned so that
+the object can hold any type of data.
To access an obstack's alignment boundary, use the macro
@code{obstack_alignment_mask}, whose function prototype looks like
@@ -597,7 +598,9 @@ this:
The value is a bit mask; a bit that is 1 indicates that the corresponding
bit in the address of an object should be 0. The mask value should be one
less than a power of 2; the effect is that all object addresses are
-multiples of that power of 2. The default value of the mask is 3, so that
+multiples of that power of 2. The default value of the mask is a value
+that allows aligned objects to hold any type of data: for example, if
+its value is 3, any type of data can be stored at locations whose
addresses are multiples of 4. A mask value of 0 means an object can start
on any multiple of 1 (that is, no alignment is required).
@@ -620,7 +623,7 @@ This will finish a zero-length object and then do proper alignment for
the next object.
@node Obstack Chunks
-@section Obstack Chunks
+@subsubsection Obstack Chunks
@cindex efficiency of chunks
@cindex chunks
@@ -676,7 +679,7 @@ if (obstack_chunk_size (obstack_ptr) < @var{new-chunk-size})
@end smallexample
@node Summary of Obstacks
-@section Summary of Obstack Functions
+@subsubsection Summary of Obstack Functions
Here is a summary of all the functions associated with obstacks. Each
takes the address of an obstack (@code{struct obstack *}) as its first
diff --git a/libiberty/setenv.c b/libiberty/setenv.c
index 921e968..96917d5 100644
--- a/libiberty/setenv.c
+++ b/libiberty/setenv.c
@@ -63,11 +63,8 @@ extern int errno;
#define __environ environ
#ifndef HAVE_ENVIRON_DECL
-/* MinGW defines environ to call a function. */
-#ifndef environ
extern char **environ;
#endif
-#endif
#undef setenv
#undef unsetenv
diff --git a/libiberty/simple-object-mach-o.c b/libiberty/simple-object-mach-o.c
index 6fde672..d1b676d 100644
--- a/libiberty/simple-object-mach-o.c
+++ b/libiberty/simple-object-mach-o.c
@@ -432,7 +432,7 @@ simple_object_mach_o_segment (simple_object_read *sobj, off_t offset,
size_t index_size;
unsigned int n_wrapped_sects;
size_t wrapper_sect_size;
- off_t wrapper_sect_offset;
+ off_t wrapper_sect_offset = 0;
fetch_32 = (omr->is_big_endian
? simple_object_fetch_big_32