Skip to content

Improve error message when integer overflow happens #84700

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
+21 −2
Open

Improve error message when integer overflow happens #84700

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
23 changes: 21 additions & 2 deletions lib/SILOptimizer/Utils/ConstantFolding.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -779,6 +779,24 @@ static SILValue constantFoldBinary(BuiltinInst *BI, BuiltinValueKind ID,
}
}

Type getIntegerType(ASTContext &Ctx, unsigned width, bool DstTySigned) {
if (DstTySigned) {
switch (width) {
case 8: return Ctx.getInt8Type();
case 16: return Ctx.getInt16Type();
case 32: return Ctx.getInt32Type();
case 64: return Ctx.getInt64Type();
}
} else {
switch (width) {
case 8: return Ctx.getUInt8Type();
case 16: return Ctx.getUInt16Type();
case 32: return Ctx.getUInt32Type();
case 64: return Ctx.getUInt64Type();
}
}
}

static SILValue
constantFoldAndCheckIntegerConversions(BuiltinInst *BI,
const BuiltinInfo &Builtin,
Expand Down Expand Up @@ -910,7 +928,7 @@ constantFoldAndCheckIntegerConversions(BuiltinInst *BI,
} else {
diagnose(M.getASTContext(), Loc.getSourceLoc(),
diag::integer_literal_overflow_builtin_types,
DstTySigned, DstTy, SrcAsString);
DstTySigned, getIntegerType(M.getASTContext(), DstBitWidth, DstTySigned), SrcAsString);
}
} else {
// Try to print user-visible types if they are available.
Expand All @@ -922,7 +940,8 @@ constantFoldAndCheckIntegerConversions(BuiltinInst *BI,
// Otherwise, print the Builtin Types.
} else {
// Since builtin types are sign-agnostic, print the signedness
// separately.
// separately

diagnose(M.getASTContext(), Loc.getSourceLoc(),
diag::integer_conversion_overflow_builtin_types,
SrcTySigned, SrcTy, DstTySigned, DstTy);
Expand Down