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* [Bug libgcc/60938] New: AIX: exceptions not caught when calling function via pointer
@ 2014-04-23 12:07 lbl2007 at gmx dot net
2014-04-23 12:15 ` [Bug libgcc/60938] " lbl2007 at gmx dot net
0 siblings, 1 reply; 2+ messages in thread
From: lbl2007 at gmx dot net @ 2014-04-23 12:07 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60938
Bug ID: 60938
Summary: AIX: exceptions not caught when calling function via
pointer
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgcc
Assignee: unassigned at gcc dot gnu.org
Reporter: lbl2007 at gmx dot net
The attached test program throws a std::runtime_error, but the corresponding
catch block is not executed. This only happens under certain circumstances.
After some testing I found that the following conditions make the error appear:
(1) The function foo() doing the try/catch is in a compilation unit
different from main().
(2) foo() is called from main() via a function pointer (pfoo).
(3) pfoo is initialized in a global static constructor in a compilation
unit different from main.
To reproduce the error:
g++ -g -o demo a.cc b.cc
./demo
BEGIN
terminate called after throwing an instance of 'std::runtime_error'
what(): TILT
IOT/Abort trap (core dumped)
Test program (both raw and preprocessed sources are in the attached TAR file):
//////////////////////////////////////////////////// FILE a.cc
#include <stdio.h>
#include <stdexcept>
extern void (*pFoo)();
void foo()
{
fputs("BEGIN\n",stderr);
try { throw std::runtime_error("TILT"); }
catch( const std::runtime_error &e ) { }
fputs("OK\n",stderr);
}
struct Init { Init() { pFoo = foo; } } init;
//////////////////////////////////////////////////// FILE b.cc
extern void foo();
void (*pFoo)() = 0;
int main( int argc, char *argv[] )
{
pFoo();
return 0;
}
//////////////////////////////////////////////////// Version info:
g++ -v
Using built-in specs.
COLLECT_GCC=/common/mringe/gcc482/local/bin/g++
COLLECT_LTO_WRAPPER=/common/mringe/gcc482/local/libexec/gcc/powerpc-ibm-aix6.1.0.0/4.8.2/lto-wrapper
Target: powerpc-ibm-aix6.1.0.0
Configured with: /common/mringe/gcc482/gcc-4.8.2/configure
--prefix=/common/mringe/gcc482/local --with-as=/usr/bin/as
--with-ld=/usr/bin/ld --enable-languages=c,c++
--enable-version-specific-runtime-libs --disable-nls --enable-decimal-float=dpd
--with-gmp=/common/mringe/gcc482/local --with-mpfr=/common/mringe/gcc482/local
--with-mpc=/common/mringe/gcc482/local
--with-local-prefix=/common/mringe/gcc482/local
Thread model: aix
gcc version 4.8.2 (GCC)
uname -a
AIX srva001 1 6 00F817FA4C00 AIX
^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bug libgcc/60938] AIX: exceptions not caught when calling function via pointer
2014-04-23 12:07 [Bug libgcc/60938] New: AIX: exceptions not caught when calling function via pointer lbl2007 at gmx dot net
@ 2014-04-23 12:15 ` lbl2007 at gmx dot net
0 siblings, 0 replies; 2+ messages in thread
From: lbl2007 at gmx dot net @ 2014-04-23 12:15 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60938
lbl2007 at gmx dot net changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from lbl2007 at gmx dot net ---
Duplicate, please delete
*** This bug has been marked as a duplicate of bug 60939 ***
^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-04-23 12:07 [Bug libgcc/60938] New: AIX: exceptions not caught when calling function via pointer lbl2007 at gmx dot net
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