From: Valentin Bartenev Date: Thu, 29 May 2014 17:15:19 +0000 (+0400) Subject: SPDY: fixed operator precedence in uint16/uint32 write macros. X-Git-Tag: release-1.7.2~7 X-Git-Url: http://www.kaiwu.me/postgresql/commit/?a=commitdiff_plain;h=68336e1ede6c37e3ee1f8b5e1ca9d4226feef8f5;p=nginx.git SPDY: fixed operator precedence in uint16/uint32 write macros. Since the type cast has precedence higher than the bit shift operator, all values were truncated to 8 bits. These macros are used to construct header block for SYN_REPLY frame on platforms with strict alignment requirements. As a result, any response that contains a header with name or value longer than 255 bytes was corrupted on such platforms. --- diff --git a/src/http/ngx_http_spdy.h b/src/http/ngx_http_spdy.h index 55aceda89..df24495a1 100644 --- a/src/http/ngx_http_spdy.h +++ b/src/http/ngx_http_spdy.h @@ -230,13 +230,16 @@ ngx_int_t ngx_http_spdy_send_output_queue(ngx_http_spdy_connection_t *sc); #else #define ngx_spdy_frame_write_uint16(p, s) \ - ((p)[0] = (u_char) (s) >> 8, (p)[1] = (u_char) (s), (p) + sizeof(uint16_t)) + ((p)[0] = (u_char) ((s) >> 8), \ + (p)[1] = (u_char) (s), \ + (p) + sizeof(uint16_t)) #define ngx_spdy_frame_write_uint32(p, s) \ - ((p)[0] = (u_char) (s) >> 24, \ - (p)[1] = (u_char) (s) >> 16, \ - (p)[2] = (u_char) (s) >> 8, \ - (p)[3] = (u_char) (s), (p) + sizeof(uint32_t)) + ((p)[0] = (u_char) ((s) >> 24), \ + (p)[1] = (u_char) ((s) >> 16), \ + (p)[2] = (u_char) ((s) >> 8), \ + (p)[3] = (u_char) (s), \ + (p) + sizeof(uint32_t)) #endif