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| author | Daniel Stenberg <daniel@haxx.se> | 2018-03-20 15:15:14 +0100 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2018-03-20 19:25:50 +0100 |
| commit | c1366571b609407cf0d4d9f4a2769d29e1313151 (patch) | |
| tree | 38d0ac65b3a1303b97b9065aca308d44c3f4dbfa /lib/curl_setup.h | |
| parent | f623ad65e81c76f34130be272a4efe1d1abe1e13 (diff) | |
| download | curl-c1366571b609407cf0d4d9f4a2769d29e1313151.tar.gz | |
vauth/cleartext: fix integer overflow check
Make the integer overflow check not rely on the undefined behavior that
a size_t wraps around on overflow.
Detected by lgtm.com
Closes #2408
Diffstat (limited to 'lib/curl_setup.h')
| -rw-r--r-- | lib/curl_setup.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/curl_setup.h b/lib/curl_setup.h index f128696e9..e4503c64c 100644 --- a/lib/curl_setup.h +++ b/lib/curl_setup.h @@ -447,6 +447,15 @@ # endif #endif +#ifndef SIZE_T_MAX +/* some limits.h headers have this defined, some don't */ +#if defined(SIZEOF_SIZE_T) && (SIZEOF_SIZE_T > 4) +#define SIZE_T_MAX 18446744073709551615U +#else +#define SIZE_T_MAX 4294967295U +#endif +#endif + /* * Arg 2 type for gethostname in case it hasn't been defined in config file. */ |