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authorLasse Collin <lasse.collin@tukaani.org>2016-11-21 20:24:50 +0200
committerLasse Collin <lasse.collin@tukaani.org>2016-11-21 20:24:50 +0200
commitd4a0462abe5478193521c14625e1c81fead87f9f (patch)
tree586031c1e9a515e105cfab17dc897d63b1395dd3 /src/liblzma/lzma/lzma2_decoder.c
parentUpdate THANKS. (diff)
downloadxz-d4a0462abe5478193521c14625e1c81fead87f9f.tar.xz
liblzma: Avoid multiple definitions of lzma_coder structures.
Only one definition was visible in a translation unit. It avoided a few casts and temp variables but seems that this hack doesn't work with link-time optimizations in compilers as it's not C99/C11 compliant. Fixes: http://www.mail-archive.com/xz-devel@tukaani.org/msg00279.html
Diffstat (limited to 'src/liblzma/lzma/lzma2_decoder.c')
-rw-r--r--src/liblzma/lzma/lzma2_decoder.c32
1 files changed, 19 insertions, 13 deletions
diff --git a/src/liblzma/lzma/lzma2_decoder.c b/src/liblzma/lzma/lzma2_decoder.c
index 84982d2c..878c870a 100644
--- a/src/liblzma/lzma/lzma2_decoder.c
+++ b/src/liblzma/lzma/lzma2_decoder.c
@@ -16,7 +16,7 @@
#include "lzma_decoder.h"
-struct lzma_coder_s {
+typedef struct {
enum sequence {
SEQ_CONTROL,
SEQ_UNCOMPRESSED_1,
@@ -50,14 +50,16 @@ struct lzma_coder_s {
bool need_dictionary_reset;
lzma_options_lzma options;
-};
+} lzma_lzma2_coder;
static lzma_ret
-lzma2_decode(lzma_coder *restrict coder, lzma_dict *restrict dict,
+lzma2_decode(void *coder_ptr, lzma_dict *restrict dict,
const uint8_t *restrict in, size_t *restrict in_pos,
size_t in_size)
{
+ lzma_lzma2_coder *restrict coder = coder_ptr;
+
// With SEQ_LZMA it is possible that no new input is needed to do
// some progress. The rest of the sequences assume that there is
// at least one byte of input.
@@ -209,8 +211,10 @@ lzma2_decode(lzma_coder *restrict coder, lzma_dict *restrict dict,
static void
-lzma2_decoder_end(lzma_coder *coder, const lzma_allocator *allocator)
+lzma2_decoder_end(void *coder_ptr, const lzma_allocator *allocator)
{
+ lzma_lzma2_coder *coder = coder_ptr;
+
assert(coder->lzma.end == NULL);
lzma_free(coder->lzma.coder, allocator);
@@ -224,25 +228,27 @@ static lzma_ret
lzma2_decoder_init(lzma_lz_decoder *lz, const lzma_allocator *allocator,
const void *opt, lzma_lz_options *lz_options)
{
- if (lz->coder == NULL) {
- lz->coder = lzma_alloc(sizeof(lzma_coder), allocator);
- if (lz->coder == NULL)
+ lzma_lzma2_coder *coder = lz->coder;
+ if (coder == NULL) {
+ coder = lzma_alloc(sizeof(lzma_lzma2_coder), allocator);
+ if (coder == NULL)
return LZMA_MEM_ERROR;
+ lz->coder = coder;
lz->code = &lzma2_decode;
lz->end = &lzma2_decoder_end;
- lz->coder->lzma = LZMA_LZ_DECODER_INIT;
+ coder->lzma = LZMA_LZ_DECODER_INIT;
}
const lzma_options_lzma *options = opt;
- lz->coder->sequence = SEQ_CONTROL;
- lz->coder->need_properties = true;
- lz->coder->need_dictionary_reset = options->preset_dict == NULL
+ coder->sequence = SEQ_CONTROL;
+ coder->need_properties = true;
+ coder->need_dictionary_reset = options->preset_dict == NULL
|| options->preset_dict_size == 0;
- return lzma_lzma_decoder_create(&lz->coder->lzma,
+ return lzma_lzma_decoder_create(&coder->lzma,
allocator, options, lz_options);
}
@@ -263,7 +269,7 @@ lzma_lzma2_decoder_init(lzma_next_coder *next, const lzma_allocator *allocator,
extern uint64_t
lzma_lzma2_decoder_memusage(const void *options)
{
- return sizeof(lzma_coder)
+ return sizeof(lzma_lzma2_coder)
+ lzma_lzma_decoder_memusage_nocheck(options);
}