https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63300
Bug ID: 63300
Summary: 'const volatile' sometimes stripped in debug info
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: arnez at linux dot vnet.ibm.com
With current upstream gcc, the following commands do not yield the expected
output:
echo 'void f (const volatile int x) { }' | gcc -xc -c -g -o foo.o -
readelf -wi foo.o | grep 'volatile\|const'
With an older gcc we get something like this:
<1><54>: Abbrev Number: 4 (DW_TAG_const_type)
<1><59>: Abbrev Number: 5 (DW_TAG_volatile_type)
With the current gcc we get nothing. Indeed, the resulting debug info declares
the parameter 'x' merely as an 'int' instead of 'const volatile int'.
The same happens with some other combinations as well, e.g.:
char *const volatile x
const volatile float x
const volatile int *x
