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Fix possible compiler error due to undefined _MSC_VER 

In order to determine how to set up the ARGON2_PUBLIC and ARGON2_LOCAL
macros, we check for various different environments via preprocessor
defines. For Microsoft Visual Studio, we check that the macro _MSC_VER
evaluates to non-zero via `#elif _MSC_VER`. This may raise a compile
error when compiling with "-Werror=undef" if the variable isn't defined.

Fix the issue by using `#elif defined(_MSC_VER)` instead.
This commit is contained in:
Patrick Steinhardt 2020-02-20 17:37:32 +01:00
parent 62358ba212
commit 48829f87eb
1 changed files with 1 additions and 1 deletions
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2
include/argon2.h
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@ -30,7 +30,7 @@ extern "C" {
#ifdef A2_VISCTL
#define ARGON2_PUBLIC __attribute__((visibility("default")))
#define ARGON2_LOCAL __attribute__ ((visibility ("hidden")))
#elif _MSC_VER
#elif defined(_MSC_VER)
#define ARGON2_PUBLIC __declspec(dllexport)
#define ARGON2_LOCAL
#else