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llvm-project/lld/test/ELF/incompatible-section-flags.s

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[lld] Add REQUIRES: x86 where needed to tests If building lld without x86 support, tests that require that support should be treated as unsupported, not errors. Tested using: 1. cmake '-DLLVM_TARGETS_TO_BUILD=AArch64;X86' make check-lld => Expected Passes : 1406 Unsupported Tests : 287 2. cmake '-DLLVM_TARGETS_TO_BUILD=AArch64' make check-lld => Expected Passes : 410 Unsupported Tests : 1283 Patch by Joel Jones Differential Revision: https://reviews.llvm.org/D47748 llvm-svn: 334095
2018-06-06 21:56:51 +08:00
// REQUIRES: x86
Change which input sections we concatenate After Mark's patch I was wondering what was the rationale for the ELF spec requiring us to merge only sections with matching flags and types. I tried emailing https://groups.google.com/forum/#!forum/generic-abi, but looks like my emails are not being posted (the list is probably moderated). I emailed Cary Coutant instead. Cary pointed out that the section was a late addition and didn't got the scrutiny it deserved. Given that and the problems found by implementing the letter of the standard, I propose changing lld to merge all sections with the same name and issue errors if the types or some critical flags are different. This should allow an unmodified firefox linked with lld to run. This also merges some code with the linkerscript path. llvm-svn: 291107
2017-01-05 22:20:35 +08:00
// RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o
[ELF] Replace unused output filenames with /dev/null in tests Post commit review at rLLD335992 llvm-svn: 336129
2018-07-03 01:48:23 +08:00
// RUN: not ld.lld -shared %t.o -o /dev/null 2>&1 | FileCheck %s
Change which input sections we concatenate After Mark's patch I was wondering what was the rationale for the ELF spec requiring us to merge only sections with matching flags and types. I tried emailing https://groups.google.com/forum/#!forum/generic-abi, but looks like my emails are not being posted (the list is probably moderated). I emailed Cary Coutant instead. Cary pointed out that the section was a late addition and didn't got the scrutiny it deserved. Given that and the problems found by implementing the letter of the standard, I propose changing lld to merge all sections with the same name and issue errors if the types or some critical flags are different. This should allow an unmodified firefox linked with lld to run. This also merges some code with the linkerscript path. llvm-svn: 291107
2017-01-05 22:20:35 +08:00
[ELF] Improve error message for incompatible section flags Previously we were not printing out the flags of the incompatible section which made it difficult to determine what the problem was. The error message format has been change to the following: error: incompatible section flags for .bar >>> /foo/bar/incompatible-section-flags.s.tmp.o:(.bar): 0x403 >>> output section .bar: 0x3 Patch by Alexander Richardson. Differential Revision: https://reviews.llvm.org/D32484 llvm-svn: 301319
2017-04-26 00:00:44 +08:00
// CHECK: error: incompatible section flags for .foo
// CHECK-NEXT: >>> {{.*}}incompatible-section-flags.s.tmp.o:(.foo): 0x3
// CHECK-NEXT: >>> output section .foo: 0x403
// CHECK: error: incompatible section flags for .bar
// CHECK-NEXT: >>> {{.*}}incompatible-section-flags.s.tmp.o:(.bar): 0x403
// CHECK-NEXT: >>> output section .bar: 0x3
Change which input sections we concatenate After Mark's patch I was wondering what was the rationale for the ELF spec requiring us to merge only sections with matching flags and types. I tried emailing https://groups.google.com/forum/#!forum/generic-abi, but looks like my emails are not being posted (the list is probably moderated). I emailed Cary Coutant instead. Cary pointed out that the section was a late addition and didn't got the scrutiny it deserved. Given that and the problems found by implementing the letter of the standard, I propose changing lld to merge all sections with the same name and issue errors if the types or some critical flags are different. This should allow an unmodified firefox linked with lld to run. This also merges some code with the linkerscript path. llvm-svn: 291107
2017-01-05 22:20:35 +08:00
.section .foo, "awT", @progbits, unique, 1
.quad 0
.section .foo, "aw", @progbits, unique, 2
.quad 0
.section .bar, "aw", @progbits, unique, 3
.quad 0
.section .bar, "awT", @progbits, unique, 4
.quad 0