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Merge 9e76303820e41bc44caf7f60e98fb32320ca4756 into a1af3c1a59fe81f7a1cac10dcead0a383b99f245

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Brayden 2026-11-05 11:45:34 +01:00 committed by GitHub
commit 9bab32ddfa
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1 changed files with 9 additions and 1 deletions
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imgui.h
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@ -76,7 +76,7 @@ Index of this file:
// Includes
#include <float.h> // FLT_MIN, FLT_MAX
#include <stdarg.h> // va_list, va_start, va_end
#include <stddef.h> // ptrdiff_t, NULL
#include <stddef.h> // ptrdiff_t, NULL, offsetof
#include <string.h> // memset, memmove, memcpy, strlen, strchr, strcpy, strcmp
// Define attributes of all API symbols declarations (e.g. for DLL under Windows)
@ -164,6 +164,10 @@ Index of this file:
#pragma GCC diagnostic ignored "-Wclass-memaccess" // [__GNUC__ >= 8] warning: 'memset/memcpy' clearing/writing an object of type 'xxxx' with no trivial copy-assignment; use assignment or value-initialization instead
#endif
#define IM_PADDING_CHECK_FAIL_MSG(TypeName) "Cannot compile "## #TypeName ##" due to an padding assumption violation. \
Please reply to (or start) the issue with your compiler version and flags at https://github.com/ocornut/imgui/issues."
//-----------------------------------------------------------------------------
// [SECTION] Forward declarations and basic types
//-----------------------------------------------------------------------------
@ -314,6 +318,7 @@ struct ImVec2
IM_VEC2_CLASS_EXTRA // Define additional constructors and implicit cast operators in imconfig.h to convert back and forth between your math types and ImVec2.
#endif
};
static_assert(offsetof(ImVec2, y) - offsetof(ImVec2, x) == sizeof(float), IM_PADDING_CHECK_FAIL_MSG(ImVec2));
// ImVec4: 4D vector used to store clipping rectangles, colors etc. [Compile-time configurable type]
struct ImVec4
@ -325,6 +330,9 @@ struct ImVec4
IM_VEC4_CLASS_EXTRA // Define additional constructors and implicit cast operators in imconfig.h to convert back and forth between your math types and ImVec4.
#endif
};
// It is guaranteed that struct fields are in order of declaration, i.e. addressof(x) < addressof(y) < addressof(z) < addressof(w)
// This check uses the guarantee to ensure our padding assumption is correct for all members with only one comparison (concise, less error-prone).
static_assert(offsetof(ImVec4, w) - offsetof(ImVec4, x) == 3 * sizeof(float), IM_PADDING_CHECK_FAIL_MSG(ImVec4));
IM_MSVC_RUNTIME_CHECKS_RESTORE
//-----------------------------------------------------------------------------