Compiling a valid C++ file with -frepo and then editing the file
introducing bugs and then recompiling the file causes trouble:
For example:
Create the file "bug.cc" with the contents
===============
int i;
===============
Compile this file with "g++ -frepo -c bug.cc".
Then change the file to
===============
int ;
===============
and recompile it with the same command.
With mainline I get:
bug.cc:1: error: declaration does not declare anything
bug.cc:1: fatal error: error writing to /tmp/ccp9FkBp.s: Bad file descriptor
compilation terminated.
With the 4.1 branch I get:
bug.cc:1: error: declaration does not declare anything
g++: Internal error: Segmentation fault (program cc1plus)
Please submit a full bug report. [etc.]
With the 4.0 branch I get:
bug.cc:1: error: declaration does not declare anything
*** glibc detected *** malloc(): memory corruption: 0x00002aaaab106010 ***
bug.cc:1: internal compiler error: Aborted
Please submit a full bug report, [etc.]
With GCC 3.4.6 everything works fine, though.
Deleting the *.rpo file before recompiling solves the problem.
--
Summary: [4.0/4.1/4.2 regression] ICE with -frepo on invalid code
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Keywords: ice-on-invalid-code
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: reichelt at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26917
