From 33ef7dad18c9fc3d5cc3c9ee3f3528e825f10e24 Mon Sep 17 00:00:00 2001
From: Marina Yatsina <marina.yatsina@intel.com>
Date: Tue, 22 Mar 2016 11:23:15 +0000
Subject: [PATCH] [ELF][gcc compatibility]: support section names with special
 characters (e.g. "/")

Adding support for section names with special characters in them (e.g. "/").
GCC successfully compiles such section names.
This also fixes PR24520.

Differential Revision: http://reviews.llvm.org/D15678

llvm-svn: 264038
---
 llvm/lib/MC/MCParser/ELFAsmParser.cpp | 17 +++++++++--------
 llvm/test/MC/ELF/section.s            |  4 ++++
 2 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/llvm/lib/MC/MCParser/ELFAsmParser.cpp b/llvm/lib/MC/MCParser/ELFAsmParser.cpp
index 6cbcdec5e275f..1e02f05abc4d1 100644
--- a/llvm/lib/MC/MCParser/ELFAsmParser.cpp
+++ b/llvm/lib/MC/MCParser/ELFAsmParser.cpp
@@ -229,22 +229,23 @@ bool ELFAsmParser::ParseSectionName(StringRef &SectionName) {
   }
 
   for (;;) {
-    unsigned CurSize;
-
+    
     SMLoc PrevLoc = getLexer().getLoc();
-    if (getLexer().is(AsmToken::Minus)) {
-      CurSize = 1;
-      Lex(); // Consume the "-".
-    } else if (getLexer().is(AsmToken::String)) {
+    if (getLexer().is(AsmToken::Comma) ||
+      getLexer().is(AsmToken::EndOfStatement))
+      break;
+    
+    unsigned CurSize;
+    if (getLexer().is(AsmToken::String)) {
       CurSize = getTok().getIdentifier().size() + 2;
       Lex();
     } else if (getLexer().is(AsmToken::Identifier)) {
       CurSize = getTok().getIdentifier().size();
       Lex();
     } else {
-      break;
+      CurSize = getTok().getString().size();
+      Lex();
     }
-
     Size += CurSize;
     SectionName = StringRef(FirstLoc.getPointer(), Size);
 
diff --git a/llvm/test/MC/ELF/section.s b/llvm/test/MC/ELF/section.s
index 008c4605552a7..0277be5223617 100644
--- a/llvm/test/MC/ELF/section.s
+++ b/llvm/test/MC/ELF/section.s
@@ -6,11 +6,15 @@
 .section	.note.GNU-stack2,"",%progbits
 .section	.note.GNU-,"",@progbits
 .section	-.note.GNU,"","progbits"
+.section	src/stack.c,"",@progbits
+.section	~!@$%^&*()_-+={[}]|\\:<>,"",@progbits
 
 // CHECK: Name: .note.GNU-stack
 // CHECK: Name: .note.GNU-stack2
 // CHECK: Name: .note.GNU-
 // CHECK: Name: -.note.GNU
+// CHECK: Name: src/stack.c
+// CHECK: Name: ~!@$%^&*()_-+={[}]|\\:<>
 
 // Test that the defaults are used