Gregory Maxwell 8563713a4f Add non-null and unused-result warnings for the external API. ... GCC (and clang) supports extensions to annotate functions so that their results must be used and so that their arguments can't be statically provable to be null. If a caller violates these requirements they get a warning, so this helps them write correct code. I deployed this in libopus a couple years ago with good success, and the implementation here is basically copied straight from that. One consideration is that the non-null annotation teaches the optimizer and will actually compile out runtime non-nullness checks as dead-code. Since this is usually not whats wanted, the non-null annotations are disabled when compiling the library itself. The commit also removes some dead inclusions of assert.h and introduces compatibility macros for restrict and inline in preparation for some portability improvements.		2014-11-12 12:23:09 -08:00
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secp256k1.h	Add non-null and unused-result warnings for the external API.	2014-11-12 12:23:09 -08:00