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Fixed division by zero exception in ngx_hash_init().

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The ngx_hash_init() function did not expect call with zero elements count,
which caused FPE error on configs with an empty "types" block in http context
and "types_hash_max_size" > 10000.

Example configuration to reproduce:

  events { }

  http {
          types_hash_max_size 10001;
          types {}
          server {}
  }
This commit is contained in:
Valentin Bartenev 2012-01-16 12:42:07 +00:00
parent 07400a51a0
commit a07b39def4
1 changed files with 1 additions and 1 deletions
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2
src/core/ngx_hash.c
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@ -277,7 +277,7 @@ ngx_hash_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names, ngx_uint_t nelts)
start = nelts / (bucket_size / (2 * sizeof(void *))); start = nelts / (bucket_size / (2 * sizeof(void *)));
start = start ? start : 1; start = start ? start : 1;
if (hinit->max_size > 10000 && hinit->max_size / nelts < 100) { if (hinit->max_size > 10000 && nelts && hinit->max_size / nelts < 100) {
start = hinit->max_size - 1000; start = hinit->max_size - 1000;
} }