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Dave Abrahams
2afbfd6146
* Add assertion to detect UB in interpreter.cpp This change, applied to6e5070d("Adapting jsiek's executable semantics tooling for commit. (#237)"), causes the if2.6c test to segfault. Becase the assertion fires only when `stmt == nullptr` and no code has permission to change `stmt` (it is `const`) before it is dereferenced in the `switch`, and nothiing in `PrintStatement` is supposed to exit the program, the assertion is a valid change that detects a bug. The crash was originally manifest in29a5994("Executable Semantics: 1st-class stacks (#296)"). * Temporarily disable the if2 test pending #311 See https://github.com/carbon-language/carbon-lang/issues/311 * [executable semantics] Record exit code on expected error. This will prevent a final segfault from sneaking by, detected as a passing test. A more principled follow-up commit would bottleneck detected error exit reporting and have it write something to std::cerr that can be recognized.
27 lines
440 B
Plaintext
27 lines
440 B
Plaintext
********** source program **********
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fn f Int: x -> Int {
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return 0;
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}
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fn main () -> Int {
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var Int: a = 0;
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var Int: b = 1;
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f(0 = a);
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b = a;
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return b;
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}
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********** type checking **********
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--- step exp Int --->
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--- step exp Int --->
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--- step exp Int --->
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--- step exp Int --->
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--- step exp Int --->
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--- step exp Int --->
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--- step exp Int --->
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--- step exp Int --->
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15: type error in call
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expected: Int
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actual: Tuple(0 = Int)
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EXIT CODE: 255
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