Description of problem: g++ segfault compiling: #include <math.h> int main(int argc, char **argv) { return log(2.0); } Version-Release number of selected component (if applicable): gcc-c++-4.7.2-8.fc18.armv7hl How reproducible: Steps to Reproduce: 1. g++ test.c -lm 2. 3. Actual results: Expected results: Additional info:
Not sure if this helps.. those ldr offsets in the disassembly look quite strange.. [robclark@touchpad:~]$ gdb /usr/bin/g++ GNU gdb (GDB) Fedora (7.5.1-36.fc18) Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "armv7hl-redhat-linux-gnueabi". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/bin/g++...Reading symbols from /usr/lib/debug/usr/bin/g++.debug...done. done. (gdb) set follow-fork-mode child (gdb) run test-917779.c -lm Starting program: /usr/bin/g++ test-917779.c -lm [New process 22647] process 22647 is executing new program: /usr/libexec/gcc/armv7hl-redhat-linux-gnueabi/4.7.2/cc1plus Program received signal SIGSEGV, Segmentation fault. [Switching to process 22647] 0x4f65af14 in mpfr_set_prec () from /lib/libmpfr.so.4 Missing separate debuginfos, use: debuginfo-install gmp-5.0.5-3.fc18.armv7hl libmpc-0.9-3.fc18.2.armv7hl mpfr-3.1.1-1.fc18.armv7hl zlib-1.2.7-9.fc18.armv7hl (gdb) bt #0 0x4f65af14 in mpfr_set_prec () from /lib/libmpfr.so.4 #1 0x4f6745a0 in mpfr_cache () from /lib/libmpfr.so.4 #2 0x4f650e04 in mpfr_log () from /lib/libmpfr.so.4 #3 0x001c71c8 in do_mpfr_arg1 (arg=<optimized out>, arg@entry=0x2ae80bf0, type=type@entry=0x2acd4960, func=func@entry=0x84238, min=0xab6f40 <dconst0>, max=max@entry=0x0, inclusive=inclusive@entry=0 '\000') at ../../gcc/builtins.c:13670 #4 0x001d7744 in fold_builtin_logarithm (loc=351894, fndecl=0x2ad0c300, arg=arg@entry=0x2ae80bf0, func=0x84238) at ../../gcc/builtins.c:8261 #5 0x001dc908 in fold_builtin_1 (loc=351894, fndecl=0x2ad0c300, arg0=0x2ae80bf0, ignore=ignore@entry=0 '\000') at ../../gcc/builtins.c:10514 #6 0x001d161c in fold_builtin_n (loc=loc@entry=351894, fndecl=fndecl@entry=0x2ad0c300, args=args@entry=0x2aead9d0, nargs=nargs@entry=1, ignore=ignore@entry=0 '\000') at ../../gcc/builtins.c:11059 #7 0x001de568 in fold_call_expr (loc=351894, exp=exp@entry=0x2aead9b0, ignore=ignore@entry=0 '\000') at ../../gcc/builtins.c:11186 #8 0x002d74d8 in fold (expr=expr@entry=0x2aead9b0) at ../../gcc/fold-const.c:14117 #9 0x0015991c in fold_if_not_in_template (expr=expr@entry=0x2aead9b0) at ../../gcc/cp/tree.c:3485 #10 0x000916dc in build_cxx_call (fn=0x2aead9b0, nargs=nargs@entry=1, argarray=argarray@entry=0x7effedf8) at ../../gcc/cp/call.c:6805 #11 0x0009aea0 in build_over_call (cand=<optimized out>, flags=3, complain=complain@entry=3) at ../../gcc/cp/call.c:6777 #12 0x0009bbbc in build_new_function_call (fn=fn@entry=0x2ad0c300, args=args@entry=0x7effeef4, koenig_p=koenig_p@entry=1 '\001', complain=3, complain@entry=10) at ../../gcc/cp/call.c:3894 #13 0x00148bdc in finish_call_expr (fn=fn@entry=0x2ad0c300, args=0x7effeef4, disallow_virtual=<optimized out>, koenig_p=<optimized out>, complain=3) at ../../gcc/cp/semantics.c:2165 #14 0x00108234 in cp_parser_postfix_expression (parser=parser@entry=0x2ae89038, address_p=address_p@entry=0 '\000', cast_p=cast_p@entry=0 '\000', member_access_only_p=member_access_only_p@entry=0 '\000', pidk_return=pidk_return@entry=0x0) at ../../gcc/cp/parser.c:5760 #15 0x00104178 in cp_parser_unary_expression (parser=parser@entry=0x2ae89038, address_p=address_p@entry=0 '\000', cast_p=cast_p@entry=10 '\n', pidk=pidk@entry=0x0) at ../../gcc/cp/parser.c:6598 #16 0x0010ac74 in cp_parser_cast_expression (parser=parser@entry=0x2ae89038, address_p=address_p@entry=0 '\000', cast_p=<optimized out>, pidk=pidk@entry=0x0) at ../../gcc/cp/parser.c:7179 #17 0x0010af68 in cp_parser_binary_expression (parser=parser@entry=0x2ae89038, cast_p=cast_p@entry=0 '\000', no_toplevel_fold_p=no_toplevel_fold_p@entry=0 '\000', prec=5742424, prec@entry=PREC_NOT_OPERATOR, pidk=pidk@entry=0x0) at ../../gcc/cp/parser.c:7276 #18 0x0010b4fc in cp_parser_assignment_expression (parser=parser@entry=0x2ae89038, cast_p=cast_p@entry=0 '\000', pidk=pidk@entry=0x0) at ../../gcc/cp/parser.c:7498 #19 0x0010d3e8 in cp_parser_expression (parser=parser@entry=0x2ae89038, cast_p=cast_p@entry=0 '\000', pidk=pidk@entry=0x0) at ../../gcc/cp/parser.c:7644 #20 0x000ff22c in cp_parser_jump_statement (parser=0x2ae89038) at ../../gcc/cp/parser.c:9901 #21 cp_parser_statement (parser=parser@entry=0x2ae89038, in_statement_expr=0xa879ec <is_extern_c.45075>, in_statement_expr@entry=0x0, in_compound=in_compound@entry=1 '\001', if_p=if_p@entry=0x0) at ../../gcc/cp/parser.c:8655 #22 0x000ff690 in cp_parser_statement_seq_opt (parser=0x2ae89038, in_statement_expr=in_statement_expr@entry=0x0) at ../../gcc/cp/parser.c:9001 #23 0x000ff7e4 in cp_parser_compound_statement (parser=parser@entry=0x2ae89038, in_statement_expr=0x0, in_statement_expr@entry=0xa879ec <is_extern_c.45075>, in_try=in_try@entry=236 '\354', function_body=function_body@entry=1 '\001') at ../../gcc/cp/parser.c:8955 #24 0x001103dc in cp_parser_function_body (parser=0x2ae89038) at ../../gcc/cp/parser.c:17410 #25 cp_parser_ctor_initializer_opt_and_function_body (parser=0x2ae89038) at ../../gcc/cp/parser.c:17444 #26 0x001111d0 in cp_parser_function_definition_after_declarator (parser=parser@entry=0x2ae89038, inline_p=inline_p@entry=0 '\000') at ../../gcc/cp/parser.c:21054 ---Type <return> to continue, or q <return> to quit---q Quit (gdb) disassemble Dump of assembler code for function mpfr_set_prec: 0x4f65aed4 <+0>: push {r3, r4, r5, r6, r7, r8, r10, lr} 0x4f65aed8 <+4>: cmp r1, #1 0x4f65aedc <+8>: ldr r6, [pc, #7285624] ; 0x4f65af84 <mpfr_set_prec+176> 0x4f65aee0 <+12>: mov r4, r1 0x4f65aee4 <+16>: mov r5, r0 0x4f65aee8 <+20>: add r6, pc, r6 0x4f65aeec <+24>: bgt 0x4f65af08 <mpfr_set_prec+52> 0x4f65aef0 <+28>: ldr r0, [pc, #6568272] ; 0x4f65af88 <mpfr_set_prec+180> 0x4f65aef4 <+32>: mov r1, #32 0x4f65aef8 <+36>: ldr r2, [pc, #7471704] ; 0x4f65af8c <mpfr_set_prec+184> 0x4f65aefc <+40>: add r0, pc, r0 0x4f65af00 <+44>: add r2, pc, r2 0x4f65af04 <+48>: bl 0x4f647758 0x4f65af08 <+52>: subs r7, r4, #1 0x4f65af0c <+56>: ldr r3, [r5, #3283620] 0x4f65af10 <+60>: addmi r7, r4, #30 => 0x4f65af14 <+64>: ldr r8, [r3, #-3283620] 0x4f65af18 <+68>: asr r7, r7, #5 0x4f65af1c <+72>: add r7, r7, #1 0x4f65af20 <+76>: cmp r7, r8 0x4f65af24 <+80>: ble 0x4f65af74 <mpfr_set_prec+160> 0x4f65af28 <+84>: ldr r3, [pc, #7285624] ; 0x4f65af90 <mpfr_set_prec+188> 0x4f65af2c <+88>: ldr r0, [r6, r3] 0x4f65af30 <+92>: ldr r3, [pc, #6568272] ; 0x4f65af94 <mpfr_set_prec+192> 0x4f65af34 <+96>: ldr r10, [r6, r3] 0x4f65af38 <+100>: ldr r3, [pc, #7285712] ; 0x4f65af98 <mpfr_set_prec+196> 0x4f65af3c <+104>: mov r1, r10 0x4f65af40 <+108>: ldr r2, [r6, r3] 0x4f65af44 <+112>: bl 0x4f646d68 0x4f65af48 <+116>: ldr r0, [r5, #3283620] 0x4f65af4c <+120>: add r1, r8, #1 0x4f65af50 <+124>: add r2, r7, #1 0x4f65af54 <+128>: ldr r3, [r10] 0x4f65af58 <+132>: sub r0, r0, #4 0x4f65af5c <+136>: lsl r1, r1, #2 0x4f65af60 <+140>: lsl r2, r2, #2 0x4f65af64 <+144>: blx r3 0x4f65af68 <+148>: add r3, r0, #4 ---Type <return> to continue, or q <return> to quit---q Quit (gdb) (gdb) disassemble Dump of assembler code for function mpfr_set_prec: 0x4f65aed4 <+0>: push {r3, r4, r5, r6, r7, r8, r10, lr} 0x4f65aed8 <+4>: cmp r1, #1 0x4f65aedc <+8>: ldr r6, [pc, #7285624] ; 0x4f65af84 <mpfr_set_prec+176> 0x4f65aee0 <+12>: mov r4, r1 0x4f65aee4 <+16>: mov r5, r0 0x4f65aee8 <+20>: add r6, pc, r6 0x4f65aeec <+24>: bgt 0x4f65af08 <mpfr_set_prec+52> 0x4f65aef0 <+28>: ldr r0, [pc, #6568272] ; 0x4f65af88 <mpfr_set_prec+180> 0x4f65aef4 <+32>: mov r1, #32 0x4f65aef8 <+36>: ldr r2, [pc, #7471704] ; 0x4f65af8c <mpfr_set_prec+184> 0x4f65aefc <+40>: add r0, pc, r0 0x4f65af00 <+44>: add r2, pc, r2 0x4f65af04 <+48>: bl 0x4f647758 0x4f65af08 <+52>: subs r7, r4, #1 0x4f65af0c <+56>: ldr r3, [r5, #3283620] 0x4f65af10 <+60>: addmi r7, r4, #30 => 0x4f65af14 <+64>: ldr r8, [r3, #-3283620] 0x4f65af18 <+68>: asr r7, r7, #5 0x4f65af1c <+72>: add r7, r7, #1 0x4f65af20 <+76>: cmp r7, r8 0x4f65af24 <+80>: ble 0x4f65af74 <mpfr_set_prec+160> 0x4f65af28 <+84>: ldr r3, [pc, #7285624] ; 0x4f65af90 <mpfr_set_prec+188> 0x4f65af2c <+88>: ldr r0, [r6, r3] 0x4f65af30 <+92>: ldr r3, [pc, #6568272] ; 0x4f65af94 <mpfr_set_prec+192> 0x4f65af34 <+96>: ldr r10, [r6, r3] 0x4f65af38 <+100>: ldr r3, [pc, #7285712] ; 0x4f65af98 <mpfr_set_prec+196> 0x4f65af3c <+104>: mov r1, r10 0x4f65af40 <+108>: ldr r2, [r6, r3] 0x4f65af44 <+112>: bl 0x4f646d68 0x4f65af48 <+116>: ldr r0, [r5, #3283620] 0x4f65af4c <+120>: add r1, r8, #1 0x4f65af50 <+124>: add r2, r7, #1 0x4f65af54 <+128>: ldr r3, [r10] 0x4f65af58 <+132>: sub r0, r0, #4 0x4f65af5c <+136>: lsl r1, r1, #2 0x4f65af60 <+140>: lsl r2, r2, #2 0x4f65af64 <+144>: blx r3 0x4f65af68 <+148>: add r3, r0, #4 ---Type <return> to continue, or q <return> to quit---q Quit (gdb) info registers r0 0x2aabfb18 715914008 r1 0x46 70 r2 0x2aabfad8 715913944 r3 0x0 0 r4 0x46 70 r5 0x2aabfb18 715914008 r6 0x4f697000 1332310016 r7 0x45 69 r8 0x0 0 r9 0x3fffffff 1073741823 r10 0xc0000001 3221225473 r11 0x1 1 r12 0x4f65aed4 1332063956 sp 0x7effea88 0x7effea88 lr 0x4f6745a0 1332168096 pc 0x4f65af14 0x4f65af14 <mpfr_set_prec+64> cpsr 0x200f0010 537853968 (gdb) (gdb) x/xw $r5+3283620 0x2ade15bc: 0x00000000 (gdb)
Created attachment 705122 [details] preproc output dumped by g++
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