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Last change
on this file since 2980ccb8 was
81e768d,
checked in by Michael Brooks <mlbrooks@…>, 3 weeks ago
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Fix #276; add support for c-array parameters using dependent lengths.
Without this fix, declarations like
void f( int m, int n, float[m][n] );
would either
- generate bad C code, with unmangled variable names appearing in the function definition, or
- refuse to resolve a valid-c call of such a function.
tests/array-collections/c-dependent: add direct tests of such cases
tests/tuplearray: activate and expand cases which were blocked on #276
tests/array: activate case fm5y, which was blocked on #276; [noise] adjust source line numbers in .expect
tests/typedefRedef: expand coverage of "error, an array detail is different" cases; [noise] adjust source line numbers in .expect
tests/functions: [noise] adjust .expect to have resolved array sizes (extra casts) in the diffed code dump
The fix is:
- (ResolvExpr/ResolveTypeof?, ResolvExpr/Resolver?) Resolve the dimension expressions, where they were missed.
- (ResolvExpr/Resolver?) Prevent dimension expressions that are bound to other parameters from escaping in the function's type, to where they are out of scope. In the f example above, redact the type shown to callers from
void (*)(int, int, float[m][n]) to void (*)(int, int, float[][*]).
- (ResolvExpr/Unify?) Relax the matching rules for such a type, when used at a call site, letting the patameters wildcard type match with the concrete type in scope at the caller's side.
- (Validate/ReplaceTypedef?) Apply the former, stricter matching rules to the one place where they are still needed: detecting inconsistent typedefs.
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Property mode set to
100644
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File size:
1.6 KB
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| Line | |
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| 1 | typedef volatile struct Foo FooInterm; |
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| 2 | typedef const FooInterm Foo; |
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| 3 | #ifdef ERR1 |
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| 4 | typedef struct Foo Foo; |
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| 5 | #endif |
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| 6 | |
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| 7 | typedef int ** pt; |
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| 8 | typedef int ** pt; |
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| 9 | |
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| 10 | #ifdef __CFA__ |
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| 11 | extern "C" { |
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| 12 | #endif |
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| 13 | typedef int __io_read_fn ( char buf); |
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| 14 | typedef int __io_write_fn ( const char buf); |
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| 15 | |
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| 16 | |
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| 17 | __io_read_fn read; |
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| 18 | __io_write_fn write; |
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| 19 | #ifdef __CFA__ |
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| 20 | } |
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| 21 | #endif |
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| 22 | |
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| 23 | int sz; |
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| 24 | typedef int FUNC(int, ...); |
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| 25 | typedef int FUNC(int, ...); |
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| 26 | |
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| 27 | typedef int ARR[]; |
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| 28 | typedef int ARR[]; |
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| 29 | #ifdef ERR1 |
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| 30 | // if a typedef has an array dimension, it can only be redefined to the same dimension |
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| 31 | typedef int ARR[2]; |
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| 32 | #endif |
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| 33 | |
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| 34 | typedef [ float[], char[], int[] ] ARRSa; |
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| 35 | typedef [ float[], char[], int[] ] ARRSa; |
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| 36 | #ifdef ERR1 |
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| 37 | typedef [ float[], char[2], int[] ] ARRSa; |
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| 38 | #endif |
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| 39 | |
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| 40 | typedef int ARRSb[][1][2][3]; |
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| 41 | typedef int ARRSb[][1][2][3]; |
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| 42 | #ifdef ERR1 |
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| 43 | typedef int ARRSb[][1][2][99]; |
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| 44 | #endif |
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| 45 | |
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| 46 | typedef int X; |
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| 47 | typedef int Y; |
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| 48 | typedef Y Y2; |
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| 49 | typedef X X2; |
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| 50 | |
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| 51 | typedef Y2 Z; |
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| 52 | typedef X2 Z; |
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| 53 | |
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| 54 | typedef Z X2; |
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| 55 | typedef int X2; |
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| 56 | typedef Z X2; |
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| 57 | typedef int X2; |
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| 58 | |
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| 59 | X2 value __attribute__((aligned(4 * sizeof(X2)))); |
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| 60 | |
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| 61 | __attribute__((aligned(4 * sizeof(X2)))) struct rseq_cs { |
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| 62 | int foo; |
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| 63 | }; |
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| 64 | |
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| 65 | // xxx - this doesn't work yet due to parsing problems with generic types |
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| 66 | // #ifdef __CFA__ |
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| 67 | // typedef forall(type T) void foo(T); |
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| 68 | // typedef forall(type T) void foo(T); |
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| 69 | // typedef forall(type S) void foo(S); // should be allowed to do this... |
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| 70 | // #endif |
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| 71 | |
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| 72 | int main() { |
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| 73 | typedef int ARR[sz]; |
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| 74 | |
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| 75 | // can't redefine typedef which is VLA |
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| 76 | #if ERR1 |
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| 77 | typedef int ARR[sz]; |
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| 78 | #endif |
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| 79 | |
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| 80 | Foo * x; |
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| 81 | |
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| 82 | typedef struct Bar Foo; |
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| 83 | Foo * y; |
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| 84 | |
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| 85 | typedef int *** pt; |
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| 86 | |
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| 87 | #pragma GCC warning "Compiled" // force non-empty .expect file, NO TABS!!! |
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| 88 | } |
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