From 85aa4f6eee9c055c7911656e9d1a018b6088eb73 Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Sun, 23 Sep 2012 03:58:21 +0000
Subject: [PATCH] Don't do actual work inside an assert statement. Fixes
 PR11760!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164474 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/GCOV.cpp             |  10 ++++++----
 test/Other/Inputs/llvm-cov.gcda | Bin 0 -> 296 bytes
 test/Other/Inputs/llvm-cov.gcno | Bin 0 -> 984 bytes
 test/Other/llvm-cov.test        |   3 +++
 4 files changed, 9 insertions(+), 4 deletions(-)
 create mode 100644 test/Other/Inputs/llvm-cov.gcda
 create mode 100644 test/Other/Inputs/llvm-cov.gcno
 create mode 100644 test/Other/llvm-cov.test

diff --git a/lib/VMCore/GCOV.cpp b/lib/VMCore/GCOV.cpp
index 5bc1ac9f5d3..ea2f0a6d556 100644
--- a/lib/VMCore/GCOV.cpp
+++ b/lib/VMCore/GCOV.cpp
@@ -48,7 +48,7 @@ bool GCOVFile::read(GCOVBuffer &Buffer) {
     GCOVFunction *GFun = NULL;
     if (isGCDAFile(Format)) {
       // Use existing function while reading .gcda file.
-      assert (i < Functions.size() && ".gcda data does not match .gcno data");
+      assert(i < Functions.size() && ".gcda data does not match .gcno data");
       GFun = Functions[i];
     } else if (isGCNOFile(Format)){
       GFun = new GCOVFunction();
@@ -113,7 +113,9 @@ bool GCOVFunction::read(GCOVBuffer &Buff, GCOV::GCOVFormat Format) {
   LineNumber = Buff.readInt();
 
   // read blocks.
-  assert (Buff.readBlockTag() && "Block Tag not found!");
+  bool BlockTagFound = Buff.readBlockTag();
+  (void)BlockTagFound;
+  assert(BlockTagFound && "Block Tag not found!");
   uint32_t BlockCount = Buff.readInt();
   for (int i = 0, e = BlockCount; i != e; ++i) {
     Buff.readInt(); // Block flags;
@@ -124,7 +126,7 @@ bool GCOVFunction::read(GCOVBuffer &Buff, GCOV::GCOVFormat Format) {
   while (Buff.readEdgeTag()) {
     uint32_t EdgeCount = (Buff.readInt() - 1) / 2;
     uint32_t BlockNo = Buff.readInt();
-    assert (BlockNo < BlockCount && "Unexpected Block number!");
+    assert(BlockNo < BlockCount && "Unexpected Block number!");
     for (int i = 0, e = EdgeCount; i != e; ++i) {
       Blocks[BlockNo]->addEdge(Buff.readInt());
       Buff.readInt(); // Edge flag
@@ -136,7 +138,7 @@ bool GCOVFunction::read(GCOVBuffer &Buff, GCOV::GCOVFormat Format) {
     uint32_t LineTableLength = Buff.readInt();
     uint32_t Size = Buff.getCursor() + LineTableLength*4;
     uint32_t BlockNo = Buff.readInt();
-    assert (BlockNo < BlockCount && "Unexpected Block number!");
+    assert(BlockNo < BlockCount && "Unexpected Block number!");
     GCOVBlock *Block = Blocks[BlockNo];
     Buff.readInt(); // flag
     while (Buff.getCursor() != (Size - 4)) {
diff --git a/test/Other/Inputs/llvm-cov.gcda b/test/Other/Inputs/llvm-cov.gcda
new file mode 100644
index 0000000000000000000000000000000000000000..9ae2286ea2f4bfab95aac46ca63e3fe7319f852a
GIT binary patch
literal 296
zcmYdHNlw=?GBEKC^YLL|U|{3|5&{Lwcz_fbumQ>V_~eR;`1G9oq{N)~vc#hJ%)HDJ
zu<SxcCLqlSW`hYvRv;x%htLm_a|BC4)Pk810<6~IAgWp?B(><~E;x;<))`4Hvbi8P
gFSv?O3vy#_VrCvh%|fsrVd|0W01LtRFdC)~09vIQYXATM

literal 0
HcmV?d00001

diff --git a/test/Other/Inputs/llvm-cov.gcno b/test/Other/Inputs/llvm-cov.gcno
new file mode 100644
index 0000000000000000000000000000000000000000..25e202386a8973091f80ab9ae7f09ee971d098e0
GIT binary patch
literal 984
zcmb_aOH0Hs5T5vcAq5dHzVYNjqs#sP*V5a1^%`O<CD3h4_rae0EqmJk;n}nQ$C<=5
zDiIX6Fq3(FGx<81s#N)P_onyoI2Zr`J3tlHi#<GG14Rfmn~A)ro@61WvJtw}V~lU1
z@X4s*x>UvFIpeC+;k~#U-*R1z#!V)NKn(%<Y{i^TC2aN6WG)0L+i&gv^lppT4w})6
z<xPG2C~GLHnr4m6vsl$Ny0A{_kDPW5)~ZmiO-yZn!Juh)+`W1p_ZSS-ngK6~2hA=D
z@R+}O9?35}=)IRUk3;NqWcsy=(G2JBmIv*@Q0kJhp_v?00%v01$T&Y#(&pUm_}#L5
zMRB)Z05(QG-Df`=qdJdE4Nr#%aXZ1}sRNiZW%P!QN2ulu^XDiRDE>>$j<~x+bypsY
Pmc_gO4B;=o;jQxlME_`a

literal 0
HcmV?d00001

diff --git a/test/Other/llvm-cov.test b/test/Other/llvm-cov.test
new file mode 100644
index 00000000000..c0aa203e2c1
--- /dev/null
+++ b/test/Other/llvm-cov.test
@@ -0,0 +1,3 @@
+PR11760
+RUN: llvm-cov -gcda=%S/Inputs/llvm-cov.gcda -gcno=%S/Inputs/llvm-cov.gcno
+