test case: Codegen/struct.c is failing with an assertion failure

Clang Frontend
#1

Anyone else seeing this? Is this expected? This is on Mac OS 10.5.3.

$ ../TestRunner.sh struct.c
******************** TEST 'struct.c' FAILED! ********************
Command:
  clang struct.c -emit-llvm
Incorrect Output:
Assertion failed: (CGT.getTargetData().getABITypeSizeInBits(STy) == RL.getSize()), function layoutStructFields, file CodeGenTypes.cpp, line 531.
0 clang 0x002b5aa5 _ZN4llvm3sys20SetInterruptFunctionEPFvvE + 87
1 clang 0x002b5c11 _ZN4llvm3sys20SetInterruptFunctionEPFvvE + 451
2 libSystem.B.dylib 0x9135709b _sigtramp + 43
3 ??? 0xffffffff 0x0 + 4294967295
4 libSystem.B.dylib 0x913cfec2 raise + 26
5 libSystem.B.dylib 0x913df47f abort + 73
6 libSystem.B.dylib 0x913d1063 __assert_rtn + 101
7 clang 0x0008207b _ZN5clang7CodeGen12CodeGenTypes20ConvertTypeRecursiveENS_8QualTypeE + 1289
8 clang 0x000822af _ZN5clang7CodeGen12CodeGenTypes18ConvertTagDeclTypeEPKNS_7TagDeclE + 541
9 clang 0x00081a46 _ZN5clang7CodeGen12CodeGenTypes14ConvertNewTypeENS_8QualTypeE + 2052
10 clang 0x00081c0e _ZN5clang7CodeGen12CodeGenTypes20ConvertTypeRecursiveENS_8QualTypeE + 156
11 clang 0x000826cb _ZN5clang7CodeGen12CodeGenTypes11ConvertTypeENS_8QualTypeE + 25
12 clang 0x0008284f _ZN5clang7CodeGen12CodeGenTypes17ConvertTypeForMemENS_8QualTypeE + 31
13 clang 0x000789fe _ZN5clang7CodeGen13CodeGenModule17EmitGlobalVarInitEPKNS_7VarDeclE + 154
14 clang 0x00079112 _ZN5clang7CodeGen13CodeGenModule13EmitGlobalVarEPKNS_7VarDeclE + 126
15 clang 0x0007913d _ZN5clang7CodeGen13CodeGenModule23EmitGlobalVarDeclaratorEPKNS_7VarDeclE + 41
16 clang 0x000878de _ZN5clang17CreateLLVMCodeGenERNS_10DiagnosticERKNS_11LangOptionsERPN4llvm6ModuleEb + 484
17 clang 0x000e96f9 _ZN5clang8ParseASTERNS_12PreprocessorEPNS_11ASTConsumerEb + 371
18 clang 0x0002d31c _Z16InitializeGCModeRN5clang11LangOptionsE + 5546
19 clang 0x00030b5b main + 1353
20 clang 0x00002466 start + 54
Output/struct.c.out.script: line 1: 38765 Abort trap clang struct.c -emit-llvm
******************** TEST 'struct.c' FAILED! ********************

#2

Probably my fault; I'll look into it.

-Eli

#3

Does clang r51944 fix this?

-Eli

#4

Unfortunately it doesn't:

$ ../TestRunner.sh struct.c
******************** TEST 'struct.c' FAILED! ********************
Command:
  clang struct.c -emit-llvm
Incorrect Output:
Assertion failed: (CGT.getTargetData().getABITypeSizeInBits(STy) == RL.getSize()), function layoutStructFields, file CodeGenTypes.cpp, line 531.
0 clang 0x002b5aad _ZN4llvm3sys20SetInterruptFunctionEPFvvE + 87
1 clang 0x002b5c19 _ZN4llvm3sys20SetInterruptFunctionEPFvvE + 451
2 libSystem.B.dylib 0x9135709b _sigtramp + 43
3 ??? 0xffffffff 0x0 + 4294967295
4 libSystem.B.dylib 0x913cfec2 raise + 26
5 libSystem.B.dylib 0x913df47f abort + 73
6 libSystem.B.dylib 0x913d1063 __assert_rtn + 101
7 clang 0x00081fab _ZN5clang7CodeGen12CodeGenTypes20ConvertTypeRecursiveENS_8QualTypeE + 1289
8 clang 0x000821df _ZN5clang7CodeGen12CodeGenTypes18ConvertTagDeclTypeEPKNS_7TagDeclE + 541
9 clang 0x00081976 _ZN5clang7CodeGen12CodeGenTypes14ConvertNewTypeENS_8QualTypeE + 2052
10 clang 0x00081b3e _ZN5clang7CodeGen12CodeGenTypes20ConvertTypeRecursiveENS_8QualTypeE + 156
11 clang 0x000825fb _ZN5clang7CodeGen12CodeGenTypes11ConvertTypeENS_8QualTypeE + 25
12 clang 0x0008277f _ZN5clang7CodeGen12CodeGenTypes17ConvertTypeForMemENS_8QualTypeE + 31
13 clang 0x0007892e _ZN5clang7CodeGen13CodeGenModule17EmitGlobalVarInitEPKNS_7VarDeclE + 154
14 clang 0x00079042 _ZN5clang7CodeGen13CodeGenModule13EmitGlobalVarEPKNS_7VarDeclE + 126
15 clang 0x0007906d _ZN5clang7CodeGen13CodeGenModule23EmitGlobalVarDeclaratorEPKNS_7VarDeclE + 41
16 clang 0x000877ec _ZN5clang17CreateLLVMCodeGenERNS_10DiagnosticERKNS_11LangOptionsERPN4llvm6ModuleEb + 484
17 clang 0x000e9611 _ZN5clang8ParseASTERNS_12PreprocessorEPNS_11ASTConsumerEb + 383
18 clang 0x0002d1b0 _Z16InitializeGCModeRN5clang11LangOptionsE + 5534
19 clang 0x000309ef main + 1353
20 clang 0x00002652 start + 54
Output/struct.c.out.script: line 1: 64740 Abort trap clang struct.c -emit-llvm
******************** TEST 'struct.c' FAILED! ********************

Is there any particular information you need to debug this? I'm not very familiar with the Codegen module.

#5

That assertion essentially means that the LLVM type isn't ending up
with the expected size according to the layout done in Sema.

I tried committing another fix; could you see if it helps?

-Eli

#6

That fixed it. Thanks!

#7

I have
$ svnversion .
51965
$ ../../../Debug/bin/clang CodeGen/struct.c -o /tmp/a --emit-llvm
Assertion failed: (CGT.getTargetData().getABITypeSizeInBits(STy) == RL.getSize()), function layoutStructFields, file CodeGenTypes.cpp, line 531.

Do you see this failure ?

#8

I saw this failure earlier, but one of Eli's patches fixed it for me:

(kremenek@grue:CodeGen)$ clang struct.c -emit-llvm
(kremenek@grue:CodeGen)$

I assume your local LLVM copy is also TOT?

#9

Updating LLVM copy helps. Thanks!