forked from OSchip/llvm-project
cc1as: Don't crash when CIE is requested and no DWARF version is specified.
This patch changes the default DWARF version for cc1as from invalid 0 to 2, which should be the lowest common denominator on all platforms. rdar://problem/24735813 llvm-svn: 266814
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@ -0,0 +1,37 @@
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# REQUIRES: x86-registered-target
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# Test that there is a sane default CIE version.
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# RUN: %clang -cc1as -triple i386-apple-darwin -filetype obj %s -o %t
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# RUN: llvm-objdump -dwarf=frames %t | FileCheck %s
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# CHECK: .debug_frame contents:
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# CHECK: CIE
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# CHECK: Version: 1
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.section __TEXT,__text,regular,pure_instructions
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.globl _f
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.p2align 4, 0x90
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_f: ## @f
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Lfunc_begin0:
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.file 1 "test.c"
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.loc 1 1 0 ## test.c:1:0
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.cfi_startproc
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## BB#0: ## %entry
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pushl %ebp
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Ltmp0:
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.cfi_def_cfa_offset 8
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Ltmp1:
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.cfi_offset %ebp, -8
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movl %esp, %ebp
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Ltmp2:
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.cfi_def_cfa_register %ebp
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Ltmp3:
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.loc 1 1 11 prologue_end ## test.c:1:11
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popl %ebp
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retl
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Ltmp4:
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Lfunc_end0:
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.cfi_endproc
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.cfi_sections .debug_frame
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.subsections_via_symbols
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.section __DWARF,__debug_line,regular,debug
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Lsection_line:
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Lline_table_start0:
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@ -200,7 +200,7 @@ bool AssemblerInvocation::CreateFromArgs(AssemblerInvocation &Opts,
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// Any DebugInfoKind implies GenDwarfForAssembly.
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Opts.GenDwarfForAssembly = Args.hasArg(OPT_debug_info_kind_EQ);
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Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
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Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 0, Diags);
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Opts.DwarfVersion = getLastArgIntValue(Args, OPT_dwarf_version_EQ, 2, Diags);
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Opts.DwarfDebugFlags = Args.getLastArgValue(OPT_dwarf_debug_flags);
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Opts.DwarfDebugProducer = Args.getLastArgValue(OPT_dwarf_debug_producer);
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Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
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