deprecation: add `used` attribute

Recent GCC enables `-Wunused-const-variables`, which makes output quite noisy. Disable unused warnings for our deprecated variables.

deprecation: add `used` attribute
Recent GCC enables `-Wunused-const-variables`, which makes output quite noisy. Disable unused warnings for our deprecated variables.
44827b67 · Edward Thomson · 1758636b · 44827b67
Commit 44827b67 authored Jan 20, 2019 by Edward Thomson
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include/git2/common.h
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--- a/include/git2/common.h
+++ b/include/git2/common.h
@@ -59,6 +59,7 @@ typedef size_t size_t;
 #if defined(__GNUC__)
 # define GIT_DEPRECATED(func) \
 			 __attribute__((deprecated)) \
+			 __attribute__((used)) \
 			 func
 #elif defined(_MSC_VER)
 # define GIT_DEPRECATED(func) __declspec(deprecated) func