diff options
| author | Alan Somers <asomers@FreeBSD.org> | 2016-10-18 23:20:49 +0000 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2022-09-08 16:14:56 +0200 |
| commit | 48f7979f5d858900b729db3f7dcc3fa84d496f53 (patch) | |
| tree | 298cd5857e762cf33b2343ad40baedf57b49b835 /cpukit/include/sha256.h | |
| parent | Retune SHA2 code for improved performance on CPUs (diff) | |
| download | rtems-48f7979f5d858900b729db3f7dcc3fa84d496f53.tar.bz2 | |
Fix C++ includability of crypto headers with static array sizes
C99 allows array function parameters to use the static keyword for their
sizes. This tells the compiler that the parameter will have at least the
specified size, and calling code will fail to compile if that guarantee is
not met. However, this syntax is not legal in C++.
This commit reverts r300824, which worked around the problem for
sys/sys/md5.h only, and introduces a new macro: min_size(). min_size(x) can
be used in headers as a static array size, but will still compile in C++
mode.
Reviewed by: cem, ed
MFC after: 4 weeks
Sponsored by: Spectra Logic Corp
Differential Revision: https://reviews.freebsd.org/D8277
Diffstat (limited to 'cpukit/include/sha256.h')
| -rw-r--r-- | cpukit/include/sha256.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/cpukit/include/sha256.h b/cpukit/include/sha256.h index 4fe35935c0..f612713f3d 100644 --- a/cpukit/include/sha256.h +++ b/cpukit/include/sha256.h @@ -47,7 +47,8 @@ __BEGIN_DECLS void SHA256_Init(SHA256_CTX *); void SHA256_Update(SHA256_CTX *, const void *, size_t); -void SHA256_Final(unsigned char [static SHA256_DIGEST_LENGTH], SHA256_CTX *); +void SHA256_Final(unsigned char [__min_size(SHA256_DIGEST_LENGTH)], + SHA256_CTX *); #ifndef _KERNEL char *SHA256_End(SHA256_CTX *, char *); char *SHA256_Data(const void *, unsigned int, char *); |