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Fix bugzilla 24592 - ImportC: Bitfield layout wrong for int64 on 32-b…
…it Linux Type ulong is 64-bit on 32-bit Linux, but has 32-bit alignment. This affects the layout of bitfields. Also add a new test for ImportC bitfields, which compares size, alignment and layout with the host C++ compiler. The existing tests compared with fixed values instead.
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84 changes: 84 additions & 0 deletions
84
compiler/test/runnable_cxx/extra-files/testbitfields_cpp.cpp
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| extern "C" | ||
| { | ||
| #include "testbitfields_importc.c" | ||
| } | ||
|
|
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| #include <stdio.h> | ||
| #include <string.h> | ||
|
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| template<typename T> | ||
| size_t getStructSize(); | ||
| template<typename T> | ||
| size_t getStructAlign(); | ||
| template<typename T> | ||
| void resetBitfield(T &data, const char *member); | ||
|
|
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| #define BEGIN_STRUCT(S) \ | ||
| template<> \ | ||
| size_t getStructSize<S>() \ | ||
| { \ | ||
| return sizeof(S); \ | ||
| } \ | ||
| template<> \ | ||
| size_t getStructAlign<S>() \ | ||
| { \ | ||
| return alignof(S); \ | ||
| } \ | ||
| template<> \ | ||
| void resetBitfield<S>(S &data, const char *member) \ | ||
| { | ||
|
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| #define FIELD(name) if (strcmp(member, #name) == 0) data.name = 0; | ||
| #define END_STRUCT } | ||
|
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||
| BEGIN_STRUCT(T0) FIELD(x) END_STRUCT | ||
| BEGIN_STRUCT(T1) FIELD(x) END_STRUCT | ||
| BEGIN_STRUCT(T2) FIELD(x) END_STRUCT | ||
| BEGIN_STRUCT(T3) FIELD(a) FIELD(b) FIELD(c) FIELD(d) FIELD(x) END_STRUCT | ||
| BEGIN_STRUCT(T4) FIELD(a) FIELD(b) FIELD(c) FIELD(d) FIELD(e) FIELD(f) FIELD(g) FIELD(h) FIELD(x) END_STRUCT | ||
| BEGIN_STRUCT(T5) FIELD(a) FIELD(b) FIELD(c) FIELD(d) FIELD(e) FIELD(f) FIELD(g) FIELD(x) END_STRUCT | ||
| BEGIN_STRUCT(S1) FIELD(f) END_STRUCT | ||
| BEGIN_STRUCT(S2) FIELD(x) FIELD(y) END_STRUCT | ||
| BEGIN_STRUCT(S3) FIELD(c) FIELD(x) FIELD(y) END_STRUCT | ||
| BEGIN_STRUCT(S4) FIELD(x) FIELD(y) END_STRUCT | ||
| BEGIN_STRUCT(S5) FIELD(x) FIELD(y) END_STRUCT | ||
| BEGIN_STRUCT(S6) FIELD(x) FIELD(y) END_STRUCT | ||
| BEGIN_STRUCT(S7) FIELD(x) FIELD(y) FIELD(z) END_STRUCT | ||
| BEGIN_STRUCT(S8) FIELD(a) FIELD(b) FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(S8A) FIELD(b) FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(S8B) FIELD(a) FIELD(b) FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(S8C) FIELD(a) FIELD(b) END_STRUCT | ||
| BEGIN_STRUCT(S9) FIELD(a) FIELD(b) FIELD(c) END_STRUCT | ||
| //BEGIN_STRUCT(S10) END_STRUCT | ||
| //BEGIN_STRUCT(S11) END_STRUCT | ||
| BEGIN_STRUCT(S12) FIELD(x) END_STRUCT | ||
| BEGIN_STRUCT(S13) FIELD(x) FIELD(x1) FIELD(x2) FIELD(x3) FIELD(x4) FIELD(w) END_STRUCT | ||
| BEGIN_STRUCT(S14) FIELD(a) FIELD(b) FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(S15) FIELD(a) FIELD(b) FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(S16) END_STRUCT | ||
| BEGIN_STRUCT(S17) FIELD(a) END_STRUCT | ||
| BEGIN_STRUCT(S18) FIELD(a) FIELD(b) END_STRUCT | ||
| BEGIN_STRUCT(A0) FIELD(a) FIELD(b) FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(A1) FIELD(a) FIELD(b) FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(A2) FIELD(a) FIELD(b) FIELD(c) FIELD(d) | ||
| FIELD(e) END_STRUCT | ||
| BEGIN_STRUCT(A3) FIELD(a) FIELD(b) FIELD(c) FIELD(d) | ||
| FIELD(e) END_STRUCT | ||
| BEGIN_STRUCT(A4) FIELD(a) FIELD(b) | ||
| FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(A5) FIELD(a) FIELD(b) END_STRUCT | ||
| BEGIN_STRUCT(A6) FIELD(a) FIELD(b) END_STRUCT | ||
| BEGIN_STRUCT(A7) FIELD(a) FIELD(b) FIELD(c) | ||
| FIELD(d) END_STRUCT | ||
| BEGIN_STRUCT(A8) FIELD(a) FIELD(b) | ||
| FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(A9) FIELD(a) FIELD(b) | ||
| FIELD(c) FIELD(d) | ||
| FIELD(e) FIELD(f) END_STRUCT | ||
| BEGIN_STRUCT(A10) FIELD(a) FIELD(b) END_STRUCT | ||
| BEGIN_STRUCT(A11) FIELD(a) FIELD(b) FIELD(c) FIELD(d) | ||
| END_STRUCT | ||
| BEGIN_STRUCT(Issue24592a) FIELD(a) FIELD(b) FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(Issue24592b) FIELD(x) FIELD(a) FIELD(b) FIELD(c) END_STRUCT | ||
| BEGIN_STRUCT(Issue24592c) FIELD(a) FIELD(b) FIELD(c) FIELD(d) FIELD(e) FIELD(f) END_STRUCT | ||
| BEGIN_STRUCT(Issue24592d) FIELD(a) FIELD(b) FIELD(c) FIELD(d) FIELD(e) FIELD(f) END_STRUCT |
52 changes: 52 additions & 0 deletions
52
compiler/test/runnable_cxx/extra-files/testbitfields_importc.c
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
|
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| struct T0 { char x:1; }; | ||
| struct T1 { short x:1; }; | ||
| struct T2 { int x:1; }; | ||
| struct T3 { char a,b,c,d; long long x:1; }; | ||
| struct T4 { char a,b,c,d,e,f,g,h; long long x:1; }; | ||
| struct T5 { char a,b,c,d,e,f,g; long long x:1; }; | ||
| struct S1 { long long int f:1; }; | ||
| struct S2 { int x:1; int y:1; }; | ||
| struct S3 { short c; int x:1; unsigned y:1; }; | ||
| struct S4 { int x:1; short y:1; }; | ||
| struct S5 { short x:1; int y:1; }; | ||
| struct S6 { short x:1; short y:1; }; | ||
| struct S7 { short x:1; int y:1; long long z:1; }; | ||
| struct S8 { char a; char b:1; short c:2; }; | ||
| struct S8A { char b:1; short c:2; }; | ||
| struct S8B { char a; short b:1; char c:2; }; | ||
| struct S8C { char a; int b:1; }; | ||
| struct S9 { char a; char b:2; short c:9; }; | ||
| //struct S10 { }; | ||
| //struct S11 { int :0; }; | ||
| struct S12 { int :0; int x; }; | ||
| struct S13 { unsigned x:12; unsigned x1:1; unsigned x2:1; unsigned x3:1; unsigned x4:1; int w; }; | ||
| struct S14 { char a; char b:4; int c:30; }; | ||
| struct S15 { char a; char b:2; int c:9; }; | ||
| struct S16 { int :32; }; | ||
| struct S17 { int a:32; }; | ||
| struct S18 { char a; long long :0; char b; }; | ||
| struct A0 { int a; long long b:34, c:4; }; | ||
| struct A1 { int a; unsigned b:11; int c; }; | ||
| struct A2 { int a; unsigned b:11, c:5, d:16; | ||
| int e; }; | ||
| struct A3 { int a; unsigned b:11, c:5, :0, d:16; | ||
| int e; }; | ||
| struct A4 { int a:8; short b:7; | ||
| unsigned int c:29; }; | ||
| struct A5 { char a:7, b:2; }; | ||
| struct A6 { char a:7; short b:2; }; | ||
| struct A7 { short a:8; long b:16; int c; | ||
| char d:7; }; | ||
| struct A8 { short a:8; long b:16; int :0; | ||
| char c:7; }; | ||
| struct A9 { unsigned short a:8; long b:16; | ||
| unsigned long c:29; long long d:9; | ||
| unsigned long e:2, f:31; }; | ||
| struct A10 { unsigned short a:8; char b; }; | ||
| struct A11 { char a; int b:5, c:11, :0, d:8; | ||
| struct { int ee:8; } e; }; | ||
| struct Issue24592a { unsigned long long a:20, b:20, c:24; }; | ||
| struct Issue24592b { unsigned int x; unsigned long long a:20, b:20, c:24; }; | ||
| struct Issue24592c { unsigned long long a:20, b:32, c:32, d:32, e:32, f:32; }; | ||
| struct Issue24592d { unsigned long long a:10, b:16, c:16, d:16, e:16, f:16; }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| // EXTRA_CPP_SOURCES: testbitfields_cpp.cpp | ||
| // EXTRA_SOURCES: extra-files/testbitfields_importc.c | ||
| // CXXFLAGS(linux osx freebsd dragonflybsd): -std=c++11 | ||
|
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| import core.stdc.stdio; | ||
| import core.stdc.stdlib; | ||
| import core.stdc.string; | ||
|
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| static import testbitfields_importc; | ||
|
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| extern(C++) size_t getStructSize(T)(); | ||
| extern(C++) size_t getStructAlign(T)(); | ||
| extern(C++) void resetBitfield(T)(ref T data, const(char) *member); | ||
|
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| bool checkType(S)() | ||
| { | ||
| bool different; | ||
| if (S.sizeof != getStructSize!S) | ||
| different = true; | ||
| if (S.alignof != getStructAlign!S) | ||
| different = true; | ||
| static foreach (member; __traits(allMembers, S)) | ||
| {{ | ||
| static if (member[0] != '_' && typeof(__traits(getMember, S, member)).stringof[0] != '_') | ||
| { | ||
| S dummyD; | ||
| memset(&dummyD, 0xff, S.sizeof); | ||
| __traits(getMember, dummyD, member) = 0; | ||
|
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| S* dummyC = cast(S*) malloc(getStructSize!S); | ||
| memset(dummyC, 0xff, getStructSize!S); | ||
| resetBitfield!S(*dummyC, member.ptr); | ||
| if (S.sizeof == getStructSize!S && memcmp(&dummyD, dummyC, S.sizeof) != 0) | ||
| different = true; | ||
| free(dummyC); | ||
| } | ||
| }} | ||
| if (different) | ||
| { | ||
| printf("Struct %s has different bitfield layout for C and D:\n", __traits(identifier, S).ptr); | ||
| printf(" D: size=%zd align=%zd\n", S.sizeof, S.alignof); | ||
| printf(" C: size=%zd align=%zd\n", getStructSize!S, getStructAlign!S); | ||
| static foreach (member; __traits(allMembers, S)) | ||
| {{ | ||
| static if (member[0] != '_' && typeof(__traits(getMember, S, member)).stringof[0] != '_') | ||
| { | ||
| printf(" %s %s:\n", typeof(__traits(getMember, S, member)).stringof.ptr, member.ptr); | ||
| printf(" D:"); | ||
| S dummyD; | ||
| memset(&dummyD, 0xff, S.sizeof); | ||
| __traits(getMember, dummyD, member) = 0; | ||
| foreach (i; 0 .. S.sizeof) | ||
| { | ||
| if (i % 4 == 0) | ||
| printf(" "); | ||
| printf("%02X", 0xff & ~(cast(ubyte*) &dummyD)[i]); | ||
| } | ||
|
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| printf("\n C:"); | ||
| S* dummyC = cast(S*) malloc(getStructSize!S); | ||
| memset(dummyC, 0xff, getStructSize!S); | ||
| resetBitfield!S(*dummyC, member.ptr); | ||
| foreach (i; 0 .. getStructSize!S) | ||
| { | ||
| if (i % 4 == 0) | ||
| printf(" "); | ||
| printf("%02X", 0xff & ~(cast(ubyte*) dummyC)[i]); | ||
| } | ||
| free(dummyC); | ||
| printf("\n"); | ||
| } | ||
| }} | ||
| } | ||
| return different; | ||
| } | ||
|
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| int main() | ||
| { | ||
| int ret; | ||
| static foreach (name; __traits(allMembers, testbitfields_importc)) | ||
| {{ | ||
| alias S = __traits(getMember, testbitfields_importc, name); | ||
| static if (is(S == struct) && name[0] != '_') | ||
| { | ||
| if (checkType!S) | ||
| ret = 1; | ||
| } | ||
| }} | ||
| return ret; | ||
| } |