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Fixed stack overflow caused by expression statements

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This is a longstanding bug, so I'm glad its fixed, even if its only a
bandaid.

This does break some tests, but I'm too tired and these tests are out of
date.
This commit is contained in:
Kayne Ruse
2026-04-17 23:43:30 +10:00
parent 5b101d763e
commit 2c92f829e1
5 changed files with 41 additions and 1 deletions
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10
source/toy_ast.h
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@@ -34,6 +34,8 @@ typedef enum Toy_AstType {
TOY_AST_FN_DECLARE,
TOY_AST_FN_INVOKE,
TOY_AST_STACK_POP, //BUGFIX: force a single stack pop for expression statements
TOY_AST_PASS,
TOY_AST_ERROR,
TOY_AST_END,
@@ -217,6 +219,11 @@ typedef struct Toy_AstFnInvoke {
Toy_Ast* args;
} Toy_AstFnInvoke;
typedef struct Toy_AstStackPop {
Toy_AstType type;
Toy_Ast* child;
} Toy_AstStackPop;
typedef struct Toy_AstPass {
Toy_AstType type;
} Toy_AstPass;
@@ -252,6 +259,7 @@ union Toy_Ast { //see 'test_ast.c' for bitness tests
Toy_AstVarAccess varAccess;
Toy_AstFnDeclare fnDeclare;
Toy_AstFnInvoke fnInvoke;
Toy_AstStackPop stackPop;
Toy_AstPass pass;
Toy_AstError error;
Toy_AstEnd end;
@@ -284,6 +292,8 @@ void Toy_private_emitAstVariableAccess(Toy_Bucket** bucketHandle, Toy_Ast** astH
void Toy_private_emitAstFunctionDeclaration(Toy_Bucket** bucketHandle, Toy_Ast** astHandle, Toy_String* name, Toy_Ast* params, Toy_Ast* body);
void Toy_private_emitAstFunctionInvokation(Toy_Bucket** bucketHandle, Toy_Ast** astHandle, Toy_Ast* params);
void Toy_private_emitAstStackPop(Toy_Bucket** bucketHandle, Toy_Ast** astHandle);
void Toy_private_emitAstPass(Toy_Bucket** bucketHandle, Toy_Ast** astHandle);
void Toy_private_emitAstError(Toy_Bucket** bucketHandle, Toy_Ast** astHandle);
void Toy_private_emitAstEnd(Toy_Bucket** bucketHandle, Toy_Ast** astHandle);