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SPDY: fixed off_t/size_t type conversions on 32 bits platforms.

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Parameters of ngx_http_spdy_filter_get_shadow() are changed from size_t to off_t
since the last call of the function may get size and offset from the rest of a
file buffer.  This fixes possible data loss rightfully complained by MSVC on 32
bits systems where off_t is 8 bytes long while size_t is only 4 bytes.

The other two type casts are needed just to suppress warnings about possible
data loss also complained by MSVC but false positive in these cases.
This commit is contained in:
Valentin Bartenev 2014-01-15 13:23:31 +04:00
parent 70c010167f
commit d143119e3c
1 changed files with 4 additions and 5 deletions
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9
src/http/ngx_http_spdy_filter_module.c
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@ -35,8 +35,7 @@ static ngx_inline ngx_int_t ngx_http_spdy_filter_send(
ngx_connection_t *fc, ngx_http_spdy_stream_t *stream);
static ngx_chain_t *ngx_http_spdy_filter_get_shadow(
ngx_http_spdy_stream_t *stream, ngx_buf_t *buf, size_t offset,
size_t size);
ngx_http_spdy_stream_t *stream, ngx_buf_t *buf, off_t offset, off_t size);
static ngx_http_spdy_out_frame_t *ngx_http_spdy_filter_get_data_frame(
ngx_http_spdy_stream_t *stream, size_t len, ngx_chain_t *first,
ngx_chain_t *last);
@ -702,7 +701,7 @@ ngx_http_spdy_send_chain(ngx_connection_t *fc, ngx_chain_t *in, off_t limit)
*ln = cl;
ln = &cl->next;
rest -= size;
rest -= (size_t) size;
in = in->next;
if (in == NULL) {
@ -752,7 +751,7 @@ ngx_http_spdy_send_chain(ngx_connection_t *fc, ngx_chain_t *in, off_t limit)
}
if (limit < (off_t) slcf->chunk_size) {
frame_size = limit;
frame_size = (size_t) limit;
}
}
}
@ -777,7 +776,7 @@ ngx_http_spdy_send_chain(ngx_connection_t *fc, ngx_chain_t *in, off_t limit)
static ngx_chain_t *
ngx_http_spdy_filter_get_shadow(ngx_http_spdy_stream_t *stream, ngx_buf_t *buf,
size_t offset, size_t size)
off_t offset, off_t size)
{
ngx_buf_t *chunk;
ngx_chain_t *cl;