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730f5068f5
Consider the following test-case:
...
$ cat hello.c
int main()
{
printf("hello ");
#include "world.inc"
$ cat world.inc
printf("world\n");
return 0;
}
$ gcc -g hello.c
...
The line table for the compilation unit, consisting just of
function main, is translated into these two gdb line tables, one for hello.c
and one for world.inc:
...
compunit_symtab: hello.c
symtab: hello.c
INDEX LINE REL-ADDRESS UNREL-ADDRESS IS-STMT PROLOGUE-END EPILOGUE-BEGIN
0 3 0x400557 0x400557 Y
1 4 0x40055b 0x40055b Y
2 END 0x40056a 0x40056a Y
compunit_symtab: hello.c
symtab: world.inc
INDEX LINE REL-ADDRESS UNREL-ADDRESS IS-STMT PROLOGUE-END EPILOGUE-BEGIN
0 1 0x40056a 0x40056a Y
1 2 0x400574 0x400574 Y
2 3 0x400579 0x400579 Y
3 END 0x40057b 0x40057b Y
...
The epilogue of main starts at 0x400579:
...
400579: 5d pop %rbp
40057a: c3 ret
...
Now, say we have an epilogue_begin marker in the line table at 0x400579.
We won't find it using find_epilogue_using_linetable, because it does:
...
const struct symtab_and_line sal = find_pc_line (start_pc, 0);
...
which gets us the line table for hello.c.
Fix this by using "find_pc_line (end_pc - 1, 0)" instead.
Tested on x86_64-linux.
Co-Authored-By: Tom de Vries <tdevries@suse.de>
PR symtab/31622
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=31622
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| compile-support.exp | ||
| compiler.c | ||
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| dg-add-core-file-count.sh | ||
| dtrace.exp | ||
| dwarf.exp | ||
| fortran.exp | ||
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| gdb-guile.exp | ||
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| gdb-utils.exp | ||
| gdb.exp | ||
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| gen-perf-test.exp | ||
| gnat_debug_info_test.adb | ||
| go.exp | ||
| jit-elf-helpers.exp | ||
| memory.exp | ||
| mi-support.exp | ||
| my-syscalls.h | ||
| my-syscalls.S | ||
| notty-wrap | ||
| objc.exp | ||
| opencl_hostapp.c | ||
| opencl_kernel.cl | ||
| opencl.exp | ||
| pascal.exp | ||
| pdtrace.in | ||
| perftest.exp | ||
| precise-aligned-alloc.c | ||
| prelink-support.exp | ||
| prompt.exp | ||
| range-stepping-support.exp | ||
| read1.c | ||
| rocm.exp | ||
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| set_unbuffered_mode.c | ||
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| ton.tcl | ||
| trace-support.exp | ||
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| unbuffer_output.c | ||
| valgrind.exp | ||