david@TERA.COM (David Callahan) (12/21/89)
When the result an inline function is an argument to an out-of-line
function, the line number information passed to gdb indicates that
out-of-line call occurs at the definition point of the inline function.
Example, both g++ and gdb configured for sun3-nfp-os4:
---------------- bug.c ------------
struct foo {
int i ;
int val() { return i ; }
} ;
extern "C" void bar(int) ;
main() {
foo f ;
bar(f.val()) ;
}
void bar(int i) {
}
------------- sample compilation ---------
dactyl% g++ -v -o bug -g bug.c
gcc version 1.36.1 (based on GCC 1.36)
/usr/local/lib/g++-1.36.1/gcc-cpp -+ -v -undef -D__GNUC__ -D__GNUG__ -D__cplusplus -Dmc68000 -Dsun -Dunix -D__mc68000__ -D__sun__ -D__unix__ -Dmc68020 bug.c /usr/tmp/cca12599.cpp
GNU CPP version 1.36
/usr/local/lib/g++-1.36.1/gcc-cc1plus /usr/tmp/cca12599.cpp -quiet -dumpbase bug.c -g -version -o /usr/tmp/cca12599.s
GNU C++ version 1.36.1 (based on GCC 1.36) (68k, MIT syntax) compiled by GNU C version 1.36.
default target switches: -m68020 -mc68020 -mbitfield
/usr/local/lib/g++-1.36.1/gcc-as -mc68020 -o bug.o /usr/tmp/cca12599.s
/usr/local/lib/g++-1.36.1/gcc-ld -o bug -e start -dc -dp -Bstatic /lib/crt0.o /lib/Fcrt1.o bug.o -lg++ /usr/local/lib/g++-1.36.1/gcc-gnulib -lg -lc
-------- sample debugging session ------------
dactyl% gdb bug
GDB 3.4, Copyright (C) 1989 Free Software Foundation, Inc.
There is ABSOLUTELY NO WARRANTY for GDB; type "info warranty" for details.
GDB is free software and you are welcome to distribute copies of it
under certain conditions; type "info copying" to see the conditions.
Reading symbol data from /home/tera/david/Doc/Web2/bug...done.
Type "help" for a list of commands.
(gdb) break bar
Reading in symbols for bug.c...done.
Breakpoint 1 at 0x22ca: file bug.c, line 15.
(gdb) run
Starting program: /home/tera/david/Doc/Web2/bug
Bpt 1, bar (i=0) (bug.c line 15)
15 }
(gdb) where
#0 bar (i=0) (bug.c line 15)
#1 0x22ba in main () (bug.c line 3)
(gdb) quit
The program is running. Quit anyway? (y or n) y
dactyl%
---------------------------
Note that in response to "where", gdb reports the call to "bar" to be
at line 4 rather than 10.
David Callahan david@tera.com
Tera Computer Co. 400 North 34th Street, Suite 300 Seattle WA, 98103