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Fix several _killer_ bugs. This now actually WORKS for really complex testcases :)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8157 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-08-27 04:51:26 +00:00
parent 5cf1199059
commit 5eb7939057
2 changed files with 8 additions and 22 deletions
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15
runtime/GCCLibraries/crtend/C++-Exception.cpp
View File

@ -9,7 +9,6 @@
#include "c++-exception.h"
#include <cstdlib>
#include <cassert>
//===----------------------------------------------------------------------===//
// Generic exception support
@ -75,8 +74,7 @@ void __llvm_cxxeh_free_exception(void *ObjectPtr) {
// exception.
//
static void cxx_destructor(llvm_exception *LE) {
void *ObjectPtr = LE+1;
llvm_cxx_exception *E = (llvm_cxx_exception *)ObjectPtr - 1;
llvm_cxx_exception *E = get_cxx_exception(LE);
// The exception is no longer caught.
assert(CaughtExceptionStack == LE &&
@ -132,7 +130,7 @@ void *__llvm_cxxeh_current_uncaught_exception_isa(
// to see if TypeID matches and, if so, to adjust the exception object
// pointer.
//
llvm_cxx_exception *E = (llvm_cxx_exception*)UncaughtExceptionStack;
llvm_cxx_exception *E = get_cxx_exception(UncaughtExceptionStack);
// ThrownPtr is a pointer to the object being thrown...
void *ThrownPtr = E+1;
@ -170,7 +168,7 @@ void *__llvm_cxxeh_begin_catch(void) {
// The exception is now caught.
E->Next = CaughtExceptionStack;
CaughtExceptionStack = E->Next;
CaughtExceptionStack = E;
// Increment the handler count for this exception.
E->HandlerCount++;
@ -204,11 +202,9 @@ void __llvm_cxxeh_end_catch(void) {
assert(E && "There are no caught exceptions!");
// If this is the last handler using the exception, destroy it now!
if (--E->HandlerCount == 0) {
CaughtExceptionStack = E->Next; // Unlink from the stack
if (--E->HandlerCount == 0)
E->ExceptionDestructor(E); // Release memory for the exception
}
}
// __llvm_cxxeh_rethrow - This function turns the top-level caught exception
// into an uncaught exception, in preparation for an llvm.unwind, which should
@ -230,9 +226,6 @@ void __llvm_cxxeh_rethrow(void) {
E->Next = UncaughtExceptionStack;
UncaughtExceptionStack = E;
// Decrement the number of handlers which are using the exception.
--E->HandlerCount;
// Return to the caller, which should perform the unwind now.
}

15
runtime/GCCLibraries/libexception/C++-Exception.cpp
View File

@ -9,7 +9,6 @@
#include "c++-exception.h"
#include <cstdlib>
#include <cassert>
//===----------------------------------------------------------------------===//
// Generic exception support
@ -75,8 +74,7 @@ void __llvm_cxxeh_free_exception(void *ObjectPtr) {
// exception.
//
static void cxx_destructor(llvm_exception *LE) {
void *ObjectPtr = LE+1;
llvm_cxx_exception *E = (llvm_cxx_exception *)ObjectPtr - 1;
llvm_cxx_exception *E = get_cxx_exception(LE);
// The exception is no longer caught.
assert(CaughtExceptionStack == LE &&
@ -132,7 +130,7 @@ void *__llvm_cxxeh_current_uncaught_exception_isa(
// to see if TypeID matches and, if so, to adjust the exception object
// pointer.
//
llvm_cxx_exception *E = (llvm_cxx_exception*)UncaughtExceptionStack;
llvm_cxx_exception *E = get_cxx_exception(UncaughtExceptionStack);
// ThrownPtr is a pointer to the object being thrown...
void *ThrownPtr = E+1;
@ -170,7 +168,7 @@ void *__llvm_cxxeh_begin_catch(void) {
// The exception is now caught.
E->Next = CaughtExceptionStack;
CaughtExceptionStack = E->Next;
CaughtExceptionStack = E;
// Increment the handler count for this exception.
E->HandlerCount++;
@ -204,11 +202,9 @@ void __llvm_cxxeh_end_catch(void) {
assert(E && "There are no caught exceptions!");
// If this is the last handler using the exception, destroy it now!
if (--E->HandlerCount == 0) {
CaughtExceptionStack = E->Next; // Unlink from the stack
if (--E->HandlerCount == 0)
E->ExceptionDestructor(E); // Release memory for the exception
}
}
// __llvm_cxxeh_rethrow - This function turns the top-level caught exception
// into an uncaught exception, in preparation for an llvm.unwind, which should
@ -230,9 +226,6 @@ void __llvm_cxxeh_rethrow(void) {
E->Next = UncaughtExceptionStack;
UncaughtExceptionStack = E;
// Decrement the number of handlers which are using the exception.
--E->HandlerCount;
// Return to the caller, which should perform the unwind now.
}