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[clang] Increase the default expression nesting limit #104717

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Merged
merged 1 commit into from
Aug 19, 2024
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[clang] Increase the default expression nesting limit #104717

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2 changes: 2 additions & 0 deletions clang/docs/ReleaseNotes.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -174,6 +174,8 @@ Deprecated Compiler Flags
Modified Compiler Flags
-----------------------

- The compiler flag `-fbracket-depth` default value is increased from 256 to 2048.

Removed Compiler Flags
-------------------------

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2 changes: 1 addition & 1 deletion clang/include/clang/Driver/Options.td
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Expand Up @@ -7959,7 +7959,7 @@ def fapply_global_visibility_to_externs : Flag<["-"], "fapply-global-visibility-
MarshallingInfoFlag<LangOpts<"SetVisibilityForExternDecls">>;
def fbracket_depth : Separate<["-"], "fbracket-depth">,
HelpText<"Maximum nesting level for parentheses, brackets, and braces">,
MarshallingInfoInt<LangOpts<"BracketDepth">, "256">;
MarshallingInfoInt<LangOpts<"BracketDepth">, "2048">;
defm const_strings : BoolOption<"f", "const-strings",
LangOpts<"ConstStrings">, DefaultFalse,
PosFlag<SetTrue, [], [ClangOption, CC1Option], "Use">,
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4 changes: 2 additions & 2 deletions clang/test/Parser/parser_overflow.c
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@@ -1,5 +1,5 @@
// RUN: not %clang_cc1 %s -fsyntax-only -DHUGE 2>&1 | FileCheck %s
// RUN: not %clang_cc1 %s -fsyntax-only 2>&1 | FileCheck %s
// RUN: %clang_cc1 %s -fsyntax-only
// RUN: not %clang_cc1 %s -fsyntax-only -fbracket-depth 299 2>&1 | FileCheck %s
// RUN: %clang_cc1 %s -fsyntax-only -fbracket-depth 300
// RUN: not %clang %s -fsyntax-only -fbracket-depth=299 2>&1 | FileCheck %s
Expand All @@ -15,5 +15,5 @@ void foo(void) {
#endif
}

// CHECK: fatal error: bracket nesting level exceeded maximum of {{256|299}}
// CHECK: fatal error: bracket nesting level exceeded maximum of {{2048|299}}
// CHECK: note: use -fbracket-depth=N to increase maximum nesting level