Seems that 'reallocator' field is not set to NULL in lex.c:linemap_init.
Later on in the code this field can be initialized with xrealloc only if it was
NULL. Since it is a pointer to a function, using it it leads to unexpected
behaviour (e.g. SIGILL or SIGTRAP).
Doing a quick grep in the source code, shows that toplev.c does initialize this
field, so I guess this problem is not visible in normal gcc usage.
Initializing the field in the function fixes the problem.
(Note: since I did not find any libcpp component, I filled the bug under
preprocessor cathegory)
--
Summary: linemap_init in lex.c does not initialize reallocator
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: preprocessor
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: roger dot ferrer at bsc dot es
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39512
