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fix crash with bogus config #1

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fix crash with bogus config #1

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3 changes: 3 additions & 0 deletions ngx_http_let_module.c
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Original file line number Diff line number Diff line change
Expand Up @@ -518,6 +518,9 @@ static char* ngx_http_let_let(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)

ngx_log_debug0(NGX_LOG_INFO, cf->log, 0, "let command handler");

if (value[1].len <= 1)
return "needs variable name";

if (value[1].data[0] != '$')
return "needs variable as the first argument";

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22 changes: 22 additions & 0 deletions t/crash.t
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Original file line number Diff line number Diff line change
@@ -0,0 +1,22 @@
# vi:filetype=

use lib 'lib';
use Test::Nginx::Socket; # 'no_plan';

repeat_each(1);

plan tests => repeat_each() * 2 * blocks();

run_tests();

__DATA__

=== TEST 1: simple calc
--- config
location /let {
let $ a 1;
}
--- request
GET /let
--- error_log: directive needs variable name
--- must_die