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Fix various XCode and PVS-Studio static analyzer warnings (#2309)

This commit is contained in:
omar 2019-01-27 15:27:49 +01:00
parent 20bc06af70
commit c3c2cd1e82
8 changed files with 35 additions and 25 deletions
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25
imgui.cpp
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@ -4039,7 +4039,8 @@ int ImGui::CalcTypematicPressedRepeatAmount(float t, float t_prev, float repeat_
int ImGui::GetKeyPressedAmount(int key_index, float repeat_delay, float repeat_rate)
{
ImGuiContext& g = *GImGui;
if (key_index < 0) return false;
if (key_index < 0)
return 0;
IM_ASSERT(key_index >= 0 && key_index < IM_ARRAYSIZE(g.IO.KeysDown));
const float t = g.IO.KeysDownDuration[key_index];
return CalcTypematicPressedRepeatAmount(t, t - g.IO.DeltaTime, repeat_delay, repeat_rate);
@ -4048,7 +4049,8 @@ int ImGui::GetKeyPressedAmount(int key_index, float repeat_delay, float repeat_r
bool ImGui::IsKeyPressed(int user_key_index, bool repeat)
{
ImGuiContext& g = *GImGui;
if (user_key_index < 0) return false;
if (user_key_index < 0)
return false;
IM_ASSERT(user_key_index >= 0 && user_key_index < IM_ARRAYSIZE(g.IO.KeysDown));
const float t = g.IO.KeysDownDuration[user_key_index];
if (t == 0.0f)
@ -4139,13 +4141,12 @@ ImVec2 ImGui::GetMousePosOnOpeningCurrentPopup()
return g.IO.MousePos;
}
// We typically use ImVec2(-FLT_MAX,-FLT_MAX) to denote an invalid mouse position
// We typically use ImVec2(-FLT_MAX,-FLT_MAX) to denote an invalid mouse position.
bool ImGui::IsMousePosValid(const ImVec2* mouse_pos)
{
if (mouse_pos == NULL)
mouse_pos = &GImGui->IO.MousePos;
const float MOUSE_INVALID = -256000.0f;
return mouse_pos->x >= MOUSE_INVALID && mouse_pos->y >= MOUSE_INVALID;
ImVec2 p = mouse_pos ? *mouse_pos : GImGui->IO.MousePos;
return p.x >= MOUSE_INVALID && p.y >= MOUSE_INVALID;
}
// Return the delta from the initial clicking position.
@ -4819,7 +4820,10 @@ void ImGui::UpdateWindowParentAndRootLinks(ImGuiWindow* window, ImGuiWindowFlags
if (parent_window && !(flags & ImGuiWindowFlags_Modal) && (flags & (ImGuiWindowFlags_ChildWindow | ImGuiWindowFlags_Popup)))
window->RootWindowForTitleBarHighlight = parent_window->RootWindowForTitleBarHighlight;
while (window->RootWindowForNav->Flags & ImGuiWindowFlags_NavFlattened)
{
IM_ASSERT(window->RootWindowForNav->ParentWindow != NULL);
window->RootWindowForNav = window->RootWindowForNav->ParentWindow;
}
}
// Push a new ImGui window to add widgets to.
@ -5082,7 +5086,7 @@ bool ImGui::Begin(const char* name, bool* p_open, ImGuiWindowFlags flags)
// Position child window
if (flags & ImGuiWindowFlags_ChildWindow)
{
IM_ASSERT(parent_window->Active);
IM_ASSERT(parent_window && parent_window->Active);
window->BeginOrderWithinParent = (short)parent_window->DC.ChildWindows.Size;
parent_window->DC.ChildWindows.push_back(window);
if (!(flags & ImGuiWindowFlags_Popup) && !window_pos_set_by_api && !window_is_child_tooltip)
@ -9283,7 +9287,7 @@ void ImGui::ShowMetricsWindow(bool* p_open)
{
ImDrawVert& v = draw_list->VtxBuffer[idx_buffer ? idx_buffer[vtx_i] : vtx_i];
triangles_pos[n] = v.pos;
buf_p += ImFormatString(buf_p, (int)(buf_end - buf_p), "%s %04d: pos (%8.2f,%8.2f), uv (%.6f,%.6f), col %08X\n", (n == 0) ? "vtx" : " ", vtx_i, v.pos.x, v.pos.y, v.uv.x, v.uv.y, v.col);
buf_p += ImFormatString(buf_p, buf_end - buf_p, "%s %04d: pos (%8.2f,%8.2f), uv (%.6f,%.6f), col %08X\n", (n == 0) ? "vtx" : " ", vtx_i, v.pos.x, v.pos.y, v.uv.x, v.uv.y, v.col);
}
ImGui::Selectable(buf, false);
if (ImGui::IsItemHovered())
@ -9352,12 +9356,11 @@ void ImGui::ShowMetricsWindow(bool* p_open)
static void NodeTabBar(ImGuiTabBar* tab_bar)
{
// Standalone tab bars (not associated to docking/windows functionality) currently hold no discernable strings.
// Standalone tab bars (not associated to docking/windows functionality) currently hold no discernible strings.
char buf[256];
char* p = buf;
const char* buf_end = buf + IM_ARRAYSIZE(buf);
p += ImFormatString(p, buf_end - p, "TabBar (%d tabs)%s",
tab_bar->Tabs.Size, (tab_bar->PrevFrameVisible < ImGui::GetFrameCount() - 2) ? " *Inactive*" : "");
ImFormatString(p, buf_end - p, "TabBar (%d tabs)%s", tab_bar->Tabs.Size, (tab_bar->PrevFrameVisible < ImGui::GetFrameCount() - 2) ? " *Inactive*" : "");
if (ImGui::TreeNode(tab_bar, "%s", buf))
{
for (int tab_n = 0; tab_n < tab_bar->Tabs.Size; tab_n++)

2
imgui.h
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@ -1945,7 +1945,7 @@ struct ImFontGlyphRangesBuilder
{
ImVector<int> UsedChars; // Store 1-bit per Unicode code point (0=unused, 1=used)
ImFontGlyphRangesBuilder() { UsedChars.resize(0x10000 / 32); memset(UsedChars.Data, 0, 0x10000 / 32); }
ImFontGlyphRangesBuilder() { UsedChars.resize(0x10000 / sizeof(int)); memset(UsedChars.Data, 0, 0x10000 / sizeof(int)); }
bool GetBit(int n) const { int off = (n >> 5); int mask = 1 << (n & 31); return (UsedChars[off] & mask) != 0; } // Get bit n in the array
void SetBit(int n) { int off = (n >> 5); int mask = 1 << (n & 31); UsedChars[off] |= mask; } // Set bit n in the array
void AddChar(ImWchar c) { SetBit(c); } // Add character

11
imgui_demo.cpp
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@ -879,12 +879,13 @@ static void ShowDemoWindowWidgets()
ImGui::PushID(i);
if (ImGui::Selectable("Sailor", &selected[i], 0, ImVec2(50,50)))
{
// Note: We _unnecessarily_ test for both x/y and i here only to silence some static analyzer. The second part of each test is unnecessary.
int x = i % 4;
int y = i / 4;
if (x > 0) { selected[i - 1] ^= 1; }
if (x < 3) { selected[i + 1] ^= 1; }
if (y > 0) { selected[i - 4] ^= 1; }
if (y < 3) { selected[i + 4] ^= 1; }
if (x > 0 && i > 0) { selected[i - 1] ^= 1; }
if (x < 3 && i < 15) { selected[i + 1] ^= 1; }
if (y > 0 && i > 3) { selected[i - 4] ^= 1; }
if (y < 3 && i < 12) { selected[i + 4] ^= 1; }
}
if ((i % 4) < 3) ImGui::SameLine();
ImGui::PopID();
@ -3093,7 +3094,7 @@ struct ExampleAppConsole
// Portable helpers
static int Stricmp(const char* str1, const char* str2) { int d; while ((d = toupper(*str2) - toupper(*str1)) == 0 && *str1) { str1++; str2++; } return d; }
static int Strnicmp(const char* str1, const char* str2, int n) { int d = 0; while (n > 0 && (d = toupper(*str2) - toupper(*str1)) == 0 && *str1) { str1++; str2++; n--; } return d; }
static char* Strdup(const char *str) { size_t len = strlen(str) + 1; void* buff = malloc(len); return (char*)memcpy(buff, (const void*)str, len); }
static char* Strdup(const char *str) { size_t len = strlen(str) + 1; void* buf = malloc(len); IM_ASSERT(buf); return (char*)memcpy(buf, (const void*)str, len); }
static void Strtrim(char* str) { char* str_end = str + strlen(str); while (str_end > str && str_end[-1] == ' ') str_end--; *str_end = 0; }
void ClearLog()

1
imgui_draw.cpp
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@ -2063,6 +2063,7 @@ void ImFontAtlasBuildSetupFont(ImFontAtlas* atlas, ImFont* font, ImFontConfig* f
void ImFontAtlasBuildPackCustomRects(ImFontAtlas* atlas, void* stbrp_context_opaque)
{
stbrp_context* pack_context = (stbrp_context*)stbrp_context_opaque;
IM_ASSERT(pack_context != NULL);
ImVector<ImFontAtlas::CustomRect>& user_rects = atlas->CustomRects;
IM_ASSERT(user_rects.Size >= 1); // We expect at least the default custom rects to be registered, else something went wrong.

2
imgui_internal.h
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@ -183,7 +183,7 @@ IMGUI_API int ImFormatString(char* buf, size_t buf_size, const char* f
IMGUI_API int ImFormatStringV(char* buf, size_t buf_size, const char* fmt, va_list args) IM_FMTLIST(3);
IMGUI_API const char* ImParseFormatFindStart(const char* format);
IMGUI_API const char* ImParseFormatFindEnd(const char* format);
IMGUI_API const char* ImParseFormatTrimDecorations(const char* format, char* buf, int buf_size);
IMGUI_API const char* ImParseFormatTrimDecorations(const char* format, char* buf, size_t buf_size);
IMGUI_API int ImParseFormatPrecision(const char* format, int default_value);
// Helpers: ImVec2/ImVec4 operators

6
imgui_widgets.cpp
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@ -2577,7 +2577,7 @@ const char* ImParseFormatFindEnd(const char* fmt)
// fmt = "%.3f" -> return fmt
// fmt = "hello %.3f" -> return fmt + 6
// fmt = "%.3f hello" -> return buf written with "%.3f"
const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, int buf_size)
const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, size_t buf_size)
{
const char* fmt_start = ImParseFormatFindStart(fmt);
if (fmt_start[0] != '%')
@ -2585,7 +2585,7 @@ const char* ImParseFormatTrimDecorations(const char* fmt, char* buf, int buf_siz
const char* fmt_end = ImParseFormatFindEnd(fmt_start);
if (fmt_end[0] == 0) // If we only have leading decoration, we don't need to copy the data.
return fmt_start;
ImStrncpy(buf, fmt_start, ImMin((int)(fmt_end + 1 - fmt_start), buf_size));
ImStrncpy(buf, fmt_start, ImMin((size_t)(fmt_end - fmt_start) + 1, buf_size));
return buf;
}
@ -6427,7 +6427,7 @@ bool ImGui::TabItemEx(ImGuiTabBar* tab_bar, const char* label, bool* p_open,
// Render tab label, process close button
const ImGuiID close_button_id = p_open ? window->GetID((void*)((intptr_t)id + 1)) : 0;
bool just_closed = TabItemLabelAndCloseButton(display_draw_list, bb, flags, label, id, close_button_id);
if (just_closed)
if (just_closed && p_open != NULL)
{
*p_open = false;
TabBarCloseTab(tab_bar, tab);

1
imstb_textedit.h
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@ -563,7 +563,6 @@ static void stb_textedit_find_charpos(StbFindState *find, STB_TEXTEDIT_STRING *s
// now scan to find xpos
find->x = r.x0;
i = 0;
for (i=0; first+i < n; ++i)
find->x += STB_TEXTEDIT_GETWIDTH(str, first, i);
}

12
imstb_truetype.h
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@ -1,3 +1,6 @@
// [ImGui] this is a slightly modified version of stb_truetype.h 1.19. Those changes would need to be pushed into nothings/stb
// grep for [ImGui] to find the changes.
// stb_truetype.h - v1.19 - public domain
// authored from 2009-2016 by Sean Barrett / RAD Game Tools
//
@ -2368,7 +2371,8 @@ static stbtt_int32 stbtt__GetGlyphClass(stbtt_uint8 *classDefTable, int glyph)
if (glyph >= startGlyphID && glyph < startGlyphID + glyphCount)
return (stbtt_int32)ttUSHORT(classDef1ValueArray + 2 * (glyph - startGlyphID));
classDefTable = classDef1ValueArray + 2 * glyphCount;
// [ImGui: commented to fix static analyzer warning]
//classDefTable = classDef1ValueArray + 2 * glyphCount;
} break;
case 2: {
@ -2392,7 +2396,8 @@ static stbtt_int32 stbtt__GetGlyphClass(stbtt_uint8 *classDefTable, int glyph)
return (stbtt_int32)ttUSHORT(classRangeRecord + 4);
}
classDefTable = classRangeRecords + 6 * classRangeCount;
// [ImGui: commented to fix static analyzer warning]
//classDefTable = classRangeRecords + 6 * classRangeCount;
} break;
default: {
@ -3024,6 +3029,7 @@ static void stbtt__fill_active_edges_new(float *scanline, float *scanline_fill,
dx = -dx;
dy = -dy;
t = x0, x0 = xb, xb = t;
(void)dx; // [ImGui: fix static analyzer warning]
}
x1 = (int) x_top;
@ -4253,7 +4259,7 @@ static int stbtt__compute_crossings_x(float x, float y, int nverts, stbtt_vertex
int winding = 0;
orig[0] = x;
orig[1] = y;
//orig[1] = y; // [ImGui] commmented double assignment without reading
// make sure y never passes through a vertex of the shape
y_frac = (float) STBTT_fmod(y, 1.0f);