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Use backslashes to escape spaces and other backslashes in -dwarf-debug-flags. 

The command line options are specified in a space-separated list that is an
argument to -dwarf-debug-flags, so that breaks if there are spaces in the
options. This feature came from Apple's internal version of GCC, so I went back
to check how llvm-gcc handled this and matched that behavior.
rdar://problem/18775420

llvm-svn: 221309
This commit is contained in:
Bob Wilson 2014-11-04 22:28:48 +00:00
parent f9660f0712
commit d5aad2a1e0
2 changed files with 25 additions and 3 deletions
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25
clang/lib/Driver/Tools.cpp
View File

@ -83,6 +83,23 @@ static void CheckCodeGenerationOptions(const Driver &D, const ArgList &Args) {
<< A->getAsString(Args) << "-static";
}
// Add backslashes to escape spaces and other backslashes.
// This is used for the space-separated argument list specified with
// the -dwarf-debug-flags option.
static void EscapeSpacesAndBackslashes(const char *Arg,
SmallVectorImpl<char> &Res) {
for ( ; *Arg; ++Arg) {
switch (*Arg) {
default: break;
case ' ':
case '\\':
Res.push_back('\\');
break;
}
Res.push_back(*Arg);
}
}
// Quote target names for inclusion in GNU Make dependency files.
// Only the characters '$', '#', ' ', '\t' are quoted.
static void QuoteTarget(StringRef Target,
@ -4465,8 +4482,10 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
SmallString<256> Flags;
Flags += Exec;
for (unsigned i = 0, e = OriginalArgs.size(); i != e; ++i) {
SmallString<128> EscapedArg;
EscapeSpacesAndBackslashes(OriginalArgs[i], EscapedArg);
Flags += " ";
Flags += OriginalArgs[i];
Flags += EscapedArg;
}
CmdArgs.push_back("-dwarf-debug-flags");
CmdArgs.push_back(Args.MakeArgString(Flags.str()));
@ -4896,8 +4915,10 @@ void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
const char *Exec = getToolChain().getDriver().getClangProgramPath();
Flags += Exec;
for (unsigned i = 0, e = OriginalArgs.size(); i != e; ++i) {
SmallString<128> EscapedArg;
EscapeSpacesAndBackslashes(OriginalArgs[i], EscapedArg);
Flags += " ";
Flags += OriginalArgs[i];
Flags += EscapedArg;
}
CmdArgs.push_back("-dwarf-debug-flags");
CmdArgs.push_back(Args.MakeArgString(Flags.str()));

3
clang/test/Driver/darwin-debug-flags.c
View File

@ -1,4 +1,4 @@
// RUN: env RC_DEBUG_OPTIONS=1 %clang -target i386-apple-darwin9 -g -Os %s -emit-llvm -S -o - | FileCheck %s
// RUN: env RC_DEBUG_OPTIONS=1 %clang -target i386-apple-darwin9 -I "path with \spaces" -g -Os %s -emit-llvm -S -o - | FileCheck %s
// <rdar://problem/7256886>
// RUN: touch %t.s
// RUN: env RC_DEBUG_OPTIONS=1 %clang -### -target i386-apple-darwin9 -c -g %t.s 2>&1 | FileCheck -check-prefix=S %s
@ -6,6 +6,7 @@
// RUN: %clang -### -target i386-apple-darwin9 -c -g %t.s 2>&1 | FileCheck -check-prefix=P %s
// CHECK: !0 = metadata !{
// CHECK: -I path\5C with\5C \5C\5Cspaces
// CHECK: -g -Os
// CHECK: -mmacosx-version-min=10.5.0
// CHECK: [ DW_TAG_compile_unit ]