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Bug
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Resolution: Invalid
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Not Evaluated
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None
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5.12.4
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None
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macOS
Build with SDK 10.13
xcrun --show-sdk-version 10.13
kernel/qcore_mac_objc.mm:147:13: error: use of undeclared identifier
'backtrace_from_fp'
if (backtrace_from_fp(__builtin_frame_address(0), &frame, 1))
^
1 error generated.
SDK 10.13 need for static build with target 10.13.
Application not linked with static builded Qt from SDK 10.14 - error linking function not existed on the platform 10.13. Shared Qt worked with week linked function!
Problem in the QMacAutoReleasePool::QMacAutoReleasePool()
: pool([[NSAutoreleasePool alloc] init]) with backtrace_from_fp - not exists in the SDK 10.13
QMacAutoReleasePool::QMacAutoReleasePool()
: pool([[NSAutoreleasePool alloc] init])
{
Class trackerClass = [QMacAutoReleasePoolTracker class];
#ifdef QT_DEBUG
void *poolFrame = nullptr;
if (__builtin_available(macOS 10.14, iOS 12.0, tvOS 12.0, watchOS 5.0, *)) {
void *frame;
if (backtrace_from_fp(__builtin_frame_address(0), &frame, 1))
poolFrame = frame;
} else {
static const int maxFrames = 3;
void *callstack[maxFrames];
if (backtrace(callstack, maxFrames) == maxFrames)
poolFrame = callstack[maxFrames - 1];
}
Workaround in the attached patch file - made by pattern in this file below in the function bool qt_mac_applicationIsInDarkMode() - add preprocessor quard for exclude code for new platform
QMacAutoReleasePool::QMacAutoReleasePool()
: pool([[NSAutoreleasePool alloc] init])
{
Class trackerClass = [QMacAutoReleasePoolTracker class];
#ifdef QT_DEBUG
void *poolFrame = nullptr;
#if QT_DARWIN_PLATFORM_SDK_EQUAL_OR_ABOVE(__MAC_10_14, __IPHONE_12_0, __TVOS_12_0, __WATCHOS_5_0)
if (__builtin_available(macOS 10.14, iOS 12.0, tvOS 12.0, watchOS 5.0, *)) {
void *frame;
if (backtrace_from_fp(__builtin_frame_address(0), &frame, 1))
poolFrame = frame;
} else {
static const int maxFrames = 3;
void *callstack[maxFrames];
if (backtrace(callstack, maxFrames) == maxFrames)
poolFrame = callstack[maxFrames - 1];
}
#else
static const int maxFrames = 3;
void *callstack[maxFrames];
if (backtrace(callstack, maxFrames) == maxFrames)
poolFrame = callstack[maxFrames - 1];
#endif
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