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

This commit is contained in:
omar
2020-06-18 16:33:23 +02:00
parent 704723744e
commit 8ead38c100
5 changed files with 41 additions and 59 deletions

View File

@ -79,35 +79,34 @@ Index of this file:
#include <stdint.h> // intptr_t
#endif
// Visual Studio warnings
#ifdef _MSC_VER
#pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
#endif
// Clang/GCC warnings with -Weverything
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast // yes, they are more terse.
#pragma clang diagnostic ignored "-Wdeprecated-declarations" // warning: 'xx' is deprecated: The POSIX name for this.. // for strdup used in demo code (so user can copy & paste the code)
#pragma clang diagnostic ignored "-Wint-to-void-pointer-cast" // warning: cast to 'void *' from smaller integer type
#pragma clang diagnostic ignored "-Wformat-security" // warning: format string is not a string literal
#pragma clang diagnostic ignored "-Wexit-time-destructors" // warning: declaration requires an exit-time destructor // exit-time destruction order is undefined. if MemFree() leads to users code that has been disabled before exit it might cause problems. ImGui coding style welcomes static/globals.
#pragma clang diagnostic ignored "-Wunused-macros" // warning: macro is not used // we define snprintf/vsnprintf on Windows so they are available, but not always used.
#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("-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("-Wreserved-id-macro")
#pragma clang diagnostic ignored "-Wreserved-id-macro" // warning: macro name is a reserved identifier
#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
#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 "-Wdeprecated-declarations" // warning: 'xx' is deprecated: The POSIX name for this.. // for strdup used in demo code (so user can copy & paste the code)
#pragma clang diagnostic ignored "-Wint-to-void-pointer-cast" // warning: cast to 'void *' from smaller integer type
#pragma clang diagnostic ignored "-Wformat-security" // warning: format string is not a string literal
#pragma clang diagnostic ignored "-Wexit-time-destructors" // warning: declaration requires an exit-time destructor // exit-time destruction order is undefined. if MemFree() leads to users code that has been disabled before exit it might cause problems. ImGui coding style welcomes static/globals.
#pragma clang diagnostic ignored "-Wunused-macros" // warning: macro is not used // we define snprintf/vsnprintf on Windows so they are available, but not always used.
#pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant" // warning: zero as null pointer constant // some standard header variations use #define NULL 0
#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.
#pragma clang diagnostic ignored "-Wreserved-id-macro" // warning: macro name is a reserved identifier
#pragma clang diagnostic ignored "-Wimplicit-int-float-conversion" // warning: implicit conversion from 'xxx' to 'float' may lose precision
#elif defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
#pragma GCC diagnostic ignored "-Wint-to-pointer-cast" // warning: cast to pointer from integer of different size
#pragma GCC diagnostic ignored "-Wformat-security" // warning: format string is not a string literal (potentially insecure)
#pragma GCC diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function
#pragma GCC diagnostic ignored "-Wconversion" // warning: conversion to 'xxxx' from 'xxxx' may alter its value
#pragma GCC diagnostic ignored "-Wmisleading-indentation" // [__GNUC__ >= 6] warning: this 'if' clause does not guard this statement // GCC 6.0+ only. See #883 on GitHub.
#pragma GCC diagnostic ignored "-Wpragmas" // warning: unknown option after '#pragma GCC diagnostic' kind
#pragma GCC diagnostic ignored "-Wint-to-pointer-cast" // warning: cast to pointer from integer of different size
#pragma GCC diagnostic ignored "-Wformat-security" // warning: format string is not a string literal (potentially insecure)
#pragma GCC diagnostic ignored "-Wdouble-promotion" // warning: implicit conversion from 'float' to 'double' when passing argument to function
#pragma GCC diagnostic ignored "-Wconversion" // warning: conversion to 'xxxx' from 'xxxx' may alter its value
#pragma GCC diagnostic ignored "-Wmisleading-indentation" // [__GNUC__ >= 6] warning: this 'if' clause does not guard this statement // GCC 6.0+ only. See #883 on GitHub.
#endif
// Play it nice with Windows users (Update: May 2018, Notepad now supports Unix-style carriage returns!)