https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102442
Bug ID: 102442
Summary: Incorrect debug info for C89-style function parameter
Product: gcc
Version: 11.1.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: liyd2021 at gmail dot com
Target Milestone: ---
Affected versions: gcc 11.1.0 with gdb (Ubuntu 20.04.2)
(terminal) $ cat simple.c && gcc -g -Og simple.c
#include <assert.h>
// float fx(float x)
float fx(x) float x;
{
return x + 1.0;
}
float inita() { return 3.0; }
int main()
{
float a = inita();
assert(fx(a) == 4.0);
}
--------------------
(terminal) $ cat run.gdb
b fx
r
(terminal) $ gdb -x run.gdb a.out
Breakpoint 1, fx (x=0) at simple.c:5 <- **BUG** <- x should be 3.0
