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[svn r378] Make some errors fatal to prevent segfaults. Error instead of assert on missing label.

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Fixes: nocompile/
finally_02, 03, 07, 08
goto_16_A, 16_B, 12, 13, 14
This commit is contained in:
Christian Kamm 2008-07-14 12:11:30 +02:00
parent bcc4cfdea4
commit b0b530ea42
1 changed files with 12 additions and 5 deletions
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17
gen/llvmhelpers.cpp
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@ -161,7 +161,7 @@ LabelStatement* DtoLabelStatement(Identifier* ident)
FuncDeclaration::LabelMap::iterator iter = fd->labmap.find(ident->toChars());
if (iter == fd->labmap.end())
{
if (fd->returnLabel->ident->equals(ident))
if (fd->returnLabel && fd->returnLabel->ident->equals(ident))
{
assert(fd->returnLabel->statement);
return fd->returnLabel->statement;
@ -180,11 +180,16 @@ void DtoGoto(Loc* loc, Identifier* target, EnclosingHandler* enclosinghandler, T
assert(!gIR->scopereturned());
LabelStatement* lblstmt = DtoLabelStatement(target);
assert(lblstmt != NULL);
if(!lblstmt) {
error(*loc, "the label %s does not exist", target->toChars());
fatal();
}
// if the target label is inside inline asm, error
if(lblstmt->asmLabel)
error(*loc, "cannot goto into inline asm block");
if(lblstmt->asmLabel) {
error(*loc, "cannot goto to label %s inside an inline asm block", target->toChars());
fatal();
}
// find target basic block
std::string labelname = gIR->func()->getScopedLabelName(target->toChars());
@ -204,8 +209,10 @@ void DtoGoto(Loc* loc, Identifier* target, EnclosingHandler* enclosinghandler, T
// goto into finally blocks is forbidden by the spec
// though it should not be problematic to implement
if(lblstmt->tf != sourcetf)
if(lblstmt->tf != sourcetf) {
error(*loc, "spec disallows goto into finally block");
fatal();
}
// emit code for finallys between goto and label
DtoEnclosingHandlers(enclosinghandler, endfinally);