HP-UX 64 compilation causing some code to seg fault


 
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Operating Systems HP-UX HP-UX 64 compilation causing some code to seg fault
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Old 06-06-2008
HP-UX 64 compilation causing some code to seg fault

Hello everyone,

Today we are attempting to port some legacy C code to a 64 HP-UX machine at my company and there is kind of a strange error we ran into.

there is a small function they have defined called zgetenv that
accepts a char* and basically just does some null checking and returns
getenv(char*)

the function works fine if i copy it into the file im attempting to recompile and change nothing other than the name of the function.
but when i attempt to call this function from the library that we have recompiled for the 64 bit machine I get a segmentation fault on the
returned value if i call a strlen or strcpy on it.

the strange thing is that this function is being called all over the place in this code and it only gives seg faults in this one module for some reason...

the only possible problem i can think of would be that we havent correctly linked this module to the new 64 bit compilation or something but I dont think that would result in a segmentation fault...

I am really really lost and any help would be much appreciated.

Thanks, Eric
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cal(1)								   User Commands							    cal(1)

NAME
cal - display a calendar SYNOPSIS
cal [ [month] year] DESCRIPTION
The cal utility writes a Gregorian calendar to standard output. If the year operand is specified, a calendar for that year is written. If no operands are specified, a calendar for the current month is written. OPERANDS
The following operands are supported: month Specify the month to be displayed, represented as a decimal integer from 1 (January) to 12 (December). The default is the current month. year Specify the year for which the calendar is displayed, represented as a decimal integer from 1 to 9999. The default is the current year. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of cal: LANG, LC_ALL, LC_CTYPE, LC_TIME, LC_MESSAGES, and NLSPATH. TZ Determine the timezone used to calculate the value of the current month. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
calendar(1), attributes(5), environ(5), standards(5) NOTES
An unusual calendar is printed for September 1752. That is the month 11 days were skipped to make up for lack of leap year adjustments. To see this calendar, type: cal 9 1752 The command cal 83 refers to the year 83, not 1983. The year is always considered to start in January. SunOS 5.11 1 Feb 1995 cal(1)