Resend (did not see this coming in on http://marc.info/?l=openbsd-bugs).
----- Forwarded message from Juha Erkkilä <[email protected]> ----- Date: Thu, 3 Jan 2013 21:47:08 +0200 (EET) From: Juha Erkkilä <[email protected]> To: [email protected] Cc: Juha Erkkilä <[email protected]> Subject: g++ with -pthread triggers C++ input streams bug (zaurus) >Synopsis: g++ with -pthread triggers C++ input streams bug >Category: user arm >Environment: System : OpenBSD 5.2 Details : OpenBSD 5.2-current (GENERIC) #0: Mon Dec 31 06:13:27 EET 2012 [email protected]:/sources/src/sys/arch/zaurus/compile/GENERIC Architecture: OpenBSD.zaurus Machine : zaurus >Description: Compiling code with g++ and -pthread command line option produces unexpected results on zaurus (and arm, generally?). Practically speaking is seems that C++ input streams are unusable. I ran into this problem while trying to get the emulators/dosbox port working on zaurus. I can not reproduce the issue on i386. The bug appears to exist on a -current code at least on late September as well as early December (2012) (I have not tried later code). >How-To-Repeat: Use the following Makefile and C++ code to compile two binaries and run them. I would expect that both binaries should print "Everything OK!" (which is the behaviour on i386), but on zaurus the version without "-pthread" prints "Everything OK!" and the version with "-pthread" prints "BUG!". -- Makefile all: testprog testprog-pthreads testprog: testprog.cpp g++ -o $@ $> testprog-pthreads: testprog.cpp g++ -pthread -o $@ $> -- -- testprog.cpp #include <fstream> #include <stdio.h> int main(void) { std::ifstream in("/"); printf("%s!\n", !in ? "BUG" : "Everything OK"); return 0; } -- >Fix: No idea. dmesg: OpenBSD 5.2-current (GENERIC) #0: Mon Dec 31 06:13:27 EET 2012 [email protected]:/sources/src/sys/arch/zaurus/compile/GENERIC real mem = 67108864 (64MB) avail mem = 58392576 (55MB) mainbus0 at root cpu0 at mainbus0: PXA27x step C-5 (XScale core) cpu0: DC enabled IC enabled WB enabled LABT branch prediction enabled cpu0: 32KB(32b/l,32way) I-cache, 32KB(32b/l,32way) wr-back-lock D-cache pxaip0 at mainbus0: CPU clock = 416.001 MHz pxaintc0 at pxaip0 addr 0x40d00000: Interrupt Controller pxagpio0 at pxaip0 addr 0x40e00000: GPIO Controller pxadmac0 at pxaip0 addr 0x40000000 intr 25: DMA Controller pxaost0 at pxaip0 addr 0x40a00000 com0 at pxaip0 addr 0x40100000 intr 22: pxa2x0, 32 byte fifo com1 at pxaip0 addr 0x40200000 intr 21: pxa2x0, 32 byte fifo com2 at pxaip0 addr 0x40700000 intr 20: pxa2x0, 32 byte fifo (SIR) ohci0 at pxaip0, version 1.0 usb0 at ohci0: USB revision 1.0 uhub0 at usb0 "PXA27x OHCI root hub" rev 1.00/1.00 addr 1 lcd0 at pxaip0 wsdisplay0 at lcd0 mux 1: console (std, vt100 emulation) wsdisplay0: screen 1 added (std, vt100 emulation) zkbd0 at pxaip0 wskbd0 at zkbd0: console keyboard, using wsdisplay0 scoop0 at pxaip0: PCMCIA/GPIO controller scoop1 at pxaip0: PCMCIA/GPIO controller pxapcic0 at pxaip0: 2 slots pcmcia0 at pxapcic0 pcmcia1 at pxapcic0 pxammc0 at pxaip0: MMC/SD/SDIO controller sdmmc0 at pxammc0 zssp0 at pxaip0 apm0 at pxaip0 zts0 at pxaip0 wsmouse0 at zts0 mux 0 zaudio0 at pxaip0: I2C, I2S, WM8750 Audio audio0 at zaudio0 zrc0 at pxaip0: CE-RH2 remote control wskbd1 at zrc0 mux 1 wskbd1: connecting to wsdisplay0 flash0 at pxaip0: Samsung K9F1G08U0A 128Mx8 3.3V pxaudc0 at pxaip0: USB Device Controller usbf0 at pxaudc0: USB revision 1.1 cdcef0 at usbf0: address 2a:cb:00:00:00:00 wdc0 at pcmcia0 function 0 "KINGSTON, ULTIMATE CF CARD 32GB, " port 0x0/16: irq 138 wd0 at wdc0 channel 0 drive 0: <ULTIMATE CF CARD 32GB> wd0: 1-sector PIO, LBA, 30079MB, 61602912 sectors wd0(wdc0:0:0): using BIOS timings vscsi0 at root scsibus0 at vscsi0: 256 targets softraid0 at root scsibus1 at softraid0: 256 targets boot device: wd0 root on wd0a swap on wd0b dump on wd0b usbdevs: ----- End forwarded message -----
