/// readGCDA - Read a function from the GCDA buffer. Return false if an error
/// occurs.
bool GCOVFunction::readGCDA(GCOVBuffer &Buff, GCOV::GCOVVersion Version) {
- uint32_t Dummy;
- if (!Buff.readInt(Dummy))
+ uint32_t HeaderLength;
+ if (!Buff.readInt(HeaderLength))
return false; // Function header length
+ uint64_t EndPos = Buff.getCursor() + HeaderLength * sizeof(uint32_t);
+
uint32_t GCDAIdent;
if (!Buff.readInt(GCDAIdent))
return false;
}
}
- StringRef GCDAName;
- if (!Buff.readString(GCDAName))
- return false;
- if (Name != GCDAName) {
- errs() << "Function names do not match: " << Name << " != " << GCDAName
- << ".\n";
- return false;
+ if (Buff.getCursor() < EndPos) {
+ StringRef GCDAName;
+ if (!Buff.readString(GCDAName))
+ return false;
+ if (Name != GCDAName) {
+ errs() << "Function names do not match: " << Name << " != " << GCDAName
+ << ".\n";
+ return false;
+ }
}
if (!Buff.readArcTag()) {
--- /dev/null
+// Make sure that llvm-cov can read coverage data written in gcov47+ compatible
+// format.
+
+// Compile with these arguments and run the result to generate .gc* files:
+// -coverage -Xclang -coverage-no-function-names-in-data
+// -Xclang -coverage-cfg-checksum -Xclang -coverage-version='407*'
+
+// We need shell for cd
+// REQUIRES: shell
+
+// RUN: rm -rf %t
+// RUN: mkdir %t
+// RUN: cd %t
+// RUN: cp %s %p/Inputs/gcov47_compatibility.gc* .
+
+// RUN: llvm-cov gcov gcov47_compatibility.cpp | FileCheck %s --check-prefix=STDOUT
+// STDOUT: File 'gcov47_compatibility.cpp'
+// STDOUT: Lines executed:100.00% of 1
+// STDOUT: gcov47_compatibility.cpp:creating 'gcov47_compatibility.cpp.gcov'
+
+// RUN: FileCheck %s --check-prefix=GCOV < %t/gcov47_compatibility.cpp.gcov
+// GCOV: -: 0:Runs:1
+// GCOV: -: 0:Programs:1
+
+int main(int argc, const char *argv[]) { // GCOV: -: [[@LINE]]:int main(
+ return 0; // GCOV: 1: [[@LINE]]: return
+} // GCOV: -: [[@LINE]]:}
+
+// llvm-cov doesn't work on big endian yet
+// XFAIL: powerpc64-, s390x, mips-, mips64-, sparc