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comparison src/http/modules/ngx_http_log_module.c @ 6626:b3682580c1bd

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Avoid left-shifting integers into the sign bit, which is undefined. Found with UndefinedBehaviorSanitizer.
author Sergey Kandaurov <pluknet@nginx.com>
date Thu, 07 Jul 2016 21:02:28 +0300
parents ac2a8e4d8f01
children 0cf4e82e7c48
comparison
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6625:a616bdc38645 6626:b3682580c1bd
998 /* find the number of the characters to be escaped */ 998 /* find the number of the characters to be escaped */
999 999
1000 n = 0; 1000 n = 0;
1001 1001
1002 while (size) { 1002 while (size) {
1003 if (escape[*src >> 5] & (1 << (*src & 0x1f))) { 1003 if (escape[*src >> 5] & (1U << (*src & 0x1f))) {
1004 n++; 1004 n++;
1005 } 1005 }
1006 src++; 1006 src++;
1007 size--; 1007 size--;
1008 } 1008 }
1009 1009
1010 return (uintptr_t) n; 1010 return (uintptr_t) n;
1011 } 1011 }
1012 1012
1013 while (size) { 1013 while (size) {
1014 if (escape[*src >> 5] & (1 << (*src & 0x1f))) { 1014 if (escape[*src >> 5] & (1U << (*src & 0x1f))) {
1015 *dst++ = '\\'; 1015 *dst++ = '\\';
1016 *dst++ = 'x'; 1016 *dst++ = 'x';
1017 *dst++ = hex[*src >> 4]; 1017 *dst++ = hex[*src >> 4];
1018 *dst++ = hex[*src & 0xf]; 1018 *dst++ = hex[*src & 0xf];
1019 src++; 1019 src++;