From 47e3f47487396414ac936e2fd37b870fe08a55d0 Mon Sep 17 00:00:00 2001 From: Tom de Vries Date: Sat, 22 Jun 2019 10:59:37 +0200 Subject: [PATCH] [gdb] Fix s390x -m31 build When building gdb on s390x with -m31, we run into this Wformat warning (which Werror turns into an error): ... gdb/dwarf2read.c: In function \ 'void create_addrmap_from_aranges(dwarf2_per_objfile*, \ dwarf2_section_info*)': gdb/dwarf2read.c:3277:22: error: format '%zu' expects argument of type \ 'size_t', but argument 3 has type 'int' [-Werror=format=] warning (_("Section .debug_aranges in %s entry at offset %zu " ... The Wformat warning is triggered in this statement: ... warning (_("Section .debug_aranges in %s entry at offset %zu " "length %s exceeds section length %s, " "ignoring .debug_aranges."), objfile_name (objfile), entry_addr - section->buffer, plongest (bytes_read + entry_length), pulongest (section->size)); ... where 'entry_addr - section->buffer' is of type ptrdiff_t and '%zu' prints an unsigned with the same size as size_t/ssize_t. On s390x with -m31, we have: - size_t : unsigned long int (32-bit) - ptrdiff_t: int (32-bit) Wformat warns against this because even though long int and int have the same size, the types are not compatible. [ The Wformat warning is to similar to what we would get for x86_64 -m32 (where long and int are also the same size) and: ... int i; printf ("%ld", i); ... ] Fix this by using '%s' and plongest instead of '%zu' to print ptrdiff_t. Build and reg-tested on x86_64. gdb/ChangeLog: 2019-06-22 Tom de Vries * dwarf2read.c (create_addrmap_from_aranges) (read_debug_names_from_section): Print ptrdiff_t using '%s' and plongest instead of '%zu'. --- gdb/ChangeLog | 6 ++++++ gdb/dwarf2read.c | 42 ++++++++++++++++++++++++------------------ 2 files changed, 30 insertions(+), 18 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index a31d078ef8d..7e7da824bad 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,9 @@ +2019-06-22 Tom de Vries + + * dwarf2read.c (create_addrmap_from_aranges) + (read_debug_names_from_section): Print ptrdiff_t using '%s' and plongest + instead of '%zu'. + 2019-06-21 Simon Marchi * dwarf2read.h (dwarf2_section_info_def): Remove. diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c index fccbd05e2d6..85f2b1dfc47 100644 --- a/gdb/dwarf2read.c +++ b/gdb/dwarf2read.c @@ -3229,10 +3229,11 @@ create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; if (addr + entry_length > section->buffer + section->size) { - warning (_("Section .debug_aranges in %s entry at offset %zu " + warning (_("Section .debug_aranges in %s entry at offset %s " "length %s exceeds section length %s, " "ignoring .debug_aranges."), - objfile_name (objfile), entry_addr - section->buffer, + objfile_name (objfile), + plongest (entry_addr - section->buffer), plongest (bytes_read + entry_length), pulongest (section->size)); return; @@ -3243,10 +3244,10 @@ create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, addr += 2; if (version != 2) { - warning (_("Section .debug_aranges in %s entry at offset %zu " + warning (_("Section .debug_aranges in %s entry at offset %s " "has unsupported version %d, ignoring .debug_aranges."), - objfile_name (objfile), entry_addr - section->buffer, - version); + objfile_name (objfile), + plongest (entry_addr - section->buffer), version); return; } @@ -3257,10 +3258,11 @@ create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); if (per_cu_it == debug_info_offset_to_per_cu.cend ()) { - warning (_("Section .debug_aranges in %s entry at offset %zu " + warning (_("Section .debug_aranges in %s entry at offset %s " "debug_info_offset %s does not exists, " "ignoring .debug_aranges."), - objfile_name (objfile), entry_addr - section->buffer, + objfile_name (objfile), + plongest (entry_addr - section->buffer), pulongest (debug_info_offset)); return; } @@ -3269,20 +3271,21 @@ create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, const uint8_t address_size = *addr++; if (address_size < 1 || address_size > 8) { - warning (_("Section .debug_aranges in %s entry at offset %zu " + warning (_("Section .debug_aranges in %s entry at offset %s " "address_size %u is invalid, ignoring .debug_aranges."), - objfile_name (objfile), entry_addr - section->buffer, - address_size); + objfile_name (objfile), + plongest (entry_addr - section->buffer), address_size); return; } const uint8_t segment_selector_size = *addr++; if (segment_selector_size != 0) { - warning (_("Section .debug_aranges in %s entry at offset %zu " + warning (_("Section .debug_aranges in %s entry at offset %s " "segment_selector_size %u is not supported, " "ignoring .debug_aranges."), - objfile_name (objfile), entry_addr - section->buffer, + objfile_name (objfile), + plongest (entry_addr - section->buffer), segment_selector_size); return; } @@ -3295,9 +3298,10 @@ create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, padding > 0; padding--) if (*addr++ != 0) { - warning (_("Section .debug_aranges in %s entry at offset %zu " + warning (_("Section .debug_aranges in %s entry at offset %s " "padding is not zero, ignoring .debug_aranges."), - objfile_name (objfile), entry_addr - section->buffer); + objfile_name (objfile), + plongest (entry_addr - section->buffer)); return; } @@ -3305,10 +3309,11 @@ create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, { if (addr + 2 * address_size > entry_end) { - warning (_("Section .debug_aranges in %s entry at offset %zu " + warning (_("Section .debug_aranges in %s entry at offset %s " "address list is not properly terminated, " "ignoring .debug_aranges."), - objfile_name (objfile), entry_addr - section->buffer); + objfile_name (objfile), + plongest (entry_addr - section->buffer)); return; } ULONGEST start = extract_unsigned_integer (addr, address_size, @@ -5517,8 +5522,9 @@ read_debug_names_from_section (struct objfile *objfile, if (addr != abbrev_table_start + abbrev_table_size) { warning (_("Section .debug_names in %s has abbreviation_table " - "of size %zu vs. written as %u, ignoring .debug_names."), - filename, addr - abbrev_table_start, abbrev_table_size); + "of size %s vs. written as %u, ignoring .debug_names."), + filename, plongest (addr - abbrev_table_start), + abbrev_table_size); return false; } map.entry_pool = addr; -- 2.30.2