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Work around MSVC bug with duplicate static declarations

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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2021-02-16 18:55:05 +01:00
parent 996f2168b6
commit 277a3a6609
1 changed files with 11 additions and 1 deletions
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12
library/psa_crypto_random_impl.h
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@ -125,8 +125,18 @@ typedef struct
} mbedtls_psa_random_context_t;
/* Defined in include/mbedtls/psa_util.h so that it's visible to
* application code. */
* application code. The declaration here is redundant, but included
* as a safety net to make it more likely that a future change that
* accidentally causes the implementation to diverge from the interface
* will be noticed. */
/* Do not include the declaration under MSVC because it doesn't accept it
* ("error C2370: 'mbedtls_psa_get_random' : redefinition; different storage class").
* Observed with Visual Studio 2013. A known bug apparently:
* https://stackoverflow.com/questions/8146541/duplicate-external-static-declarations-not-allowed-in-visual-studio
*/
#if !defined(_MSC_VER)
static mbedtls_f_rng_t *const mbedtls_psa_get_random;
#endif
/** The maximum number of bytes that mbedtls_psa_get_random() is expected to
* return.