http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59957
Bug ID: 59957
Summary: ICE in read_line_num when re-#define-ing a -DVAR=...
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: burnus at gcc dot gnu.org
Running
gcc -c -DNDEBUG=1 test.c
on the following code will give an ICE:
#ifndef DEBUG
#define NDEBUG /* Re-define NDEBUG - should warn but not ICE */
#endif
#include <assert.h>
will give an ICE with 4.9:
0xfa2248 read_line_num
../../gcc/input.c:603
0xfa2248 location_get_source_line(expanded_location, int*)
../../gcc/input.c:702
0xf9cf4b diagnostic_show_locus(diagnostic_context*, diagnostic_info const*)
../../gcc/diagnostic.c:304
0xf9df8b diagnostic_report_diagnostic(diagnostic_context*, diagnostic_info*)
../../gcc/diagnostic.c:800
0x635024 c_cpp_error(cpp_reader*, int, int, unsigned int, unsigned int, char
const*, __va_list_tag (*) [1])
../../gcc/c-family/c-common.c:9639
0xfac796 cpp_error_with_line(cpp_reader*, int, unsigned int, unsigned int, char
const*, ...)
../../libcpp/errors.c:163
0xfbc7ef _cpp_create_definition
../../libcpp/macro.c:3124
