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Clang: Reduce uses of __has_warning for overall sanity, as compilers are hostile to software targetting multiple compiler version.

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omar
2020-06-18 16:33:23 +02:00
parent 704723744e
commit 8ead38c100
5 changed files with 41 additions and 59 deletions
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14
imgui_draw.cpp
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@@ -57,25 +57,19 @@ Index of this file:
// Clang/GCC warnings with -Weverything
#if defined(__clang__)
#if __has_warning("-Wunknown-warning-option")
#pragma clang diagnostic ignored "-Wunknown-warning-option" // warning: unknown warning group 'xxx' // not all warnings are known by all Clang versions and they tend to be rename-happy.. so ignoring warnings triggers new warnings on some configuration. Great!
#endif
#pragma clang diagnostic ignored "-Wunknown-pragmas" // warning: unknown warning group 'xxx'
#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast // yes, they are more terse.
#pragma clang diagnostic ignored "-Wfloat-equal" // warning: comparing floating point with == or != is unsafe // storing and comparing against same constants ok.
#pragma clang diagnostic ignored "-Wglobal-constructors" // warning: declaration requires a global destructor // similar to above, not sure what the exact difference is.
#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness
#if __has_warning("-Wzero-as-null-pointer-constant")
#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant" // warning: zero as null pointer constant // some standard header variations use #define NULL 0
#endif
#if __has_warning("-Wcomma")
#pragma clang diagnostic ignored "-Wcomma" // warning: possible misuse of comma operator here
#endif
#if __has_warning("-Wreserved-id-macro")
#pragma clang diagnostic ignored "-Wreserved-id-macro" // warning: macro name is a reserved identifier
#endif
#if __has_warning("-Wdouble-promotion")
#pragma clang diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function // using printf() is a misery with this as C++ va_arg ellipsis changes float to double.
#endif
#if __has_warning("-Wimplicit-int-float-conversion")
#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision
#endif
#elif defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
#pragma GCC diagnostic ignored "-Wunused-function" // warning: 'xxxx' defined but not used